changeset 46963:089674d9949b

8186681: Update Graal Reviewed-by: kvn
author iveresov
date Wed, 23 Aug 2017 11:24:50 -0700
parents 1863b25339a9
children 7bdccf51db41
files hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.amd64/src/org/graalvm/compiler/core/amd64/AMD64ArithmeticLIRGenerator.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/calc/FloatConvert.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/calc/FloatConvertCategory.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/ArithmeticOpTable.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/FloatStamp.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/IntegerStamp.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnsafeReadEliminationTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/UnsafeEATest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationPrinter.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationWrapper.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompilerOptions.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/doc-files/CompilationBailoutActionHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugContext.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugFilter.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugOptions.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/MethodFilter.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/DumpHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/MethodFilterHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/MetricsFileHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.graph/src/org/graalvm/compiler/graph/NodeClass.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/CompilationWrapperTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/ObjectCloneTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/CompilerConfigurationFactory.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/debug/BenchmarkCounters.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/debug/doc-files/BenchmarkDynamicCountersHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/meta/HotSpotSuitesProvider.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/HotspotSnippetsOptions.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/doc-files/ProfileAllocationsContextHelp.txt hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.java/src/org/graalvm/compiler/java/ComputeLoopFrequenciesClosure.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.aarch64/src/org/graalvm/compiler/lir/aarch64/AArch64ArrayEqualsOp.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64ArrayEqualsOp.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.sparc/src/org/graalvm/compiler/lir/sparc/SPARCArrayEqualsOp.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopPartialUnrollPhase.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopTransformations.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.test/src/org/graalvm/compiler/loop/test/LoopPartialUnrollTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/DefaultLoopPolicies.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/LoopFragmentInside.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/org/graalvm/compiler/microbenchmarks/graal/TestJMH.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/org/graalvm/compiler/microbenchmarks/graal/TestJMHWhitebox.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes.test/src/org/graalvm/compiler/nodes/test/IntegerStampTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/GraphDecoder.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/calc/MulNode.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/cfg/ControlFlowGraph.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options.processor/src/org/graalvm/compiler/options/processor/OptionProcessor.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/EnumOptionKey.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/Option.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionDescriptor.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionValues.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/InliningUtil.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/policy/AbstractInliningPolicy.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/FixedNodeProbabilityCache.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.printer/src/org/graalvm/compiler/printer/BinaryGraphPrinter.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.amd64/src/org/graalvm/compiler/replacements/amd64/AMD64GraphBuilderPlugins.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/ArraysSubstitutionsTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/DeoptimizeOnExceptionTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/FloatArraysEqualsTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/UnsafeBooleanAccessTest.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/DefaultJavaLoweringProvider.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/StandardGraphBuilderPlugins.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ArrayEqualsNode.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ExplodeLoopNode.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/IntegerMulHighNode.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/UnsignedMulHighNode.java hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.micro.benchmarks/src/micro/benchmarks/TestJMHBlackbox.java
diffstat 66 files changed, 2061 insertions(+), 906 deletions(-) [+]
line wrap: on
line diff
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.amd64/src/org/graalvm/compiler/core/amd64/AMD64ArithmeticLIRGenerator.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.amd64/src/org/graalvm/compiler/core/amd64/AMD64ArithmeticLIRGenerator.java	Wed Aug 23 11:24:50 2017 -0700
@@ -158,7 +158,7 @@
                 }
                 break;
             default:
-                throw GraalError.shouldNotReachHere();
+                throw GraalError.shouldNotReachHere(input.getPlatformKind().toString());
         }
         return result;
     }
@@ -451,7 +451,7 @@
     protected Value emitZeroExtendMemory(AMD64Kind memoryKind, int resultBits, AMD64AddressValue address, LIRFrameState state) {
         // Issue a zero extending load of the proper bit size and set the result to
         // the proper kind.
-        Variable result = getLIRGen().newVariable(LIRKind.value(resultBits == 32 ? AMD64Kind.DWORD : AMD64Kind.QWORD));
+        Variable result = getLIRGen().newVariable(LIRKind.value(resultBits <= 32 ? AMD64Kind.DWORD : AMD64Kind.QWORD));
         switch (memoryKind) {
             case BYTE:
                 getLIRGen().append(new AMD64Unary.MemoryOp(MOVZXB, DWORD, result, address, state));
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/calc/FloatConvert.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/calc/FloatConvert.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,16 +25,26 @@
 import org.graalvm.compiler.debug.GraalError;
 
 public enum FloatConvert {
-    F2I,
-    D2I,
-    F2L,
-    D2L,
-    I2F,
-    L2F,
-    D2F,
-    I2D,
-    L2D,
-    F2D;
+    F2I(FloatConvertCategory.FloatingPointToInteger),
+    D2I(FloatConvertCategory.FloatingPointToInteger),
+    F2L(FloatConvertCategory.FloatingPointToInteger),
+    D2L(FloatConvertCategory.FloatingPointToInteger),
+    I2F(FloatConvertCategory.IntegerToFloatingPoint),
+    L2F(FloatConvertCategory.IntegerToFloatingPoint),
+    D2F(FloatConvertCategory.FloatingPointToFloatingPoint),
+    I2D(FloatConvertCategory.IntegerToFloatingPoint),
+    L2D(FloatConvertCategory.IntegerToFloatingPoint),
+    F2D(FloatConvertCategory.FloatingPointToFloatingPoint);
+
+    private FloatConvertCategory category;
+
+    FloatConvert(FloatConvertCategory category) {
+        this.category = category;
+    }
+
+    public FloatConvertCategory getCategory() {
+        return category;
+    }
 
     public FloatConvert reverse() {
         switch (this) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/calc/FloatConvertCategory.java	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.core.common.calc;
+
+public enum FloatConvertCategory {
+    FloatingPointToInteger,
+    IntegerToFloatingPoint,
+    FloatingPointToFloatingPoint;
+}
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/ArithmeticOpTable.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/ArithmeticOpTable.java	Wed Aug 23 11:24:50 2017 -0700
@@ -33,9 +33,11 @@
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.And;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Div;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Mul;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.MulHigh;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Or;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Rem;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Sub;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.UMulHigh;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Xor;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.IntegerConvertOp.Narrow;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.IntegerConvertOp.SignExtend;
@@ -62,6 +64,8 @@
     private final BinaryOp<Sub> sub;
 
     private final BinaryOp<Mul> mul;
+    private final BinaryOp<MulHigh> mulHigh;
+    private final BinaryOp<UMulHigh> umulHigh;
     private final BinaryOp<Div> div;
     private final BinaryOp<Rem> rem;
 
@@ -92,7 +96,7 @@
         }
     }
 
-    public static final ArithmeticOpTable EMPTY = new ArithmeticOpTable(null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);
+    public static final ArithmeticOpTable EMPTY = new ArithmeticOpTable(null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);
 
     public interface ArithmeticOpWrapper {
 
@@ -121,6 +125,8 @@
         BinaryOp<Sub> sub = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getSub());
 
         BinaryOp<Mul> mul = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getMul());
+        BinaryOp<MulHigh> mulHigh = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getMulHigh());
+        BinaryOp<UMulHigh> umulHigh = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getUMulHigh());
         BinaryOp<Div> div = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getDiv());
         BinaryOp<Rem> rem = wrapIfNonNull(wrapper::wrapBinaryOp, inner.getRem());
 
@@ -141,16 +147,18 @@
         IntegerConvertOp<Narrow> narrow = wrapIfNonNull(wrapper::wrapIntegerConvertOp, inner.getNarrow());
 
         FloatConvertOp[] floatConvert = CollectionsUtil.filterAndMapToArray(inner.floatConvert, Objects::nonNull, wrapper::wrapFloatConvertOp, FloatConvertOp[]::new);
-        return new ArithmeticOpTable(neg, add, sub, mul, div, rem, not, and, or, xor, shl, shr, ushr, abs, sqrt, zeroExtend, signExtend, narrow, floatConvert);
+        return new ArithmeticOpTable(neg, add, sub, mul, mulHigh, umulHigh, div, rem, not, and, or, xor, shl, shr, ushr, abs, sqrt, zeroExtend, signExtend, narrow, floatConvert);
     }
 
-    protected ArithmeticOpTable(UnaryOp<Neg> neg, BinaryOp<Add> add, BinaryOp<Sub> sub, BinaryOp<Mul> mul, BinaryOp<Div> div, BinaryOp<Rem> rem, UnaryOp<Not> not, BinaryOp<And> and, BinaryOp<Or> or,
-                    BinaryOp<Xor> xor, ShiftOp<Shl> shl, ShiftOp<Shr> shr, ShiftOp<UShr> ushr, UnaryOp<Abs> abs, UnaryOp<Sqrt> sqrt, IntegerConvertOp<ZeroExtend> zeroExtend,
-                    IntegerConvertOp<SignExtend> signExtend, IntegerConvertOp<Narrow> narrow, FloatConvertOp... floatConvert) {
+    protected ArithmeticOpTable(UnaryOp<Neg> neg, BinaryOp<Add> add, BinaryOp<Sub> sub, BinaryOp<Mul> mul, BinaryOp<MulHigh> mulHigh, BinaryOp<UMulHigh> umulHigh, BinaryOp<Div> div, BinaryOp<Rem> rem,
+                    UnaryOp<Not> not, BinaryOp<And> and, BinaryOp<Or> or, BinaryOp<Xor> xor, ShiftOp<Shl> shl, ShiftOp<Shr> shr, ShiftOp<UShr> ushr, UnaryOp<Abs> abs, UnaryOp<Sqrt> sqrt,
+                    IntegerConvertOp<ZeroExtend> zeroExtend, IntegerConvertOp<SignExtend> signExtend, IntegerConvertOp<Narrow> narrow, FloatConvertOp... floatConvert) {
         this.neg = neg;
         this.add = add;
         this.sub = sub;
         this.mul = mul;
+        this.mulHigh = mulHigh;
+        this.umulHigh = umulHigh;
         this.div = div;
         this.rem = rem;
         this.not = not;
@@ -207,6 +215,20 @@
     }
 
     /**
+     * Describes a signed operation that multiples the upper 32-bits of two long values.
+     */
+    public BinaryOp<MulHigh> getMulHigh() {
+        return mulHigh;
+    }
+
+    /**
+     * Describes an unsigned operation that multiples the upper 32-bits of two long values.
+     */
+    public BinaryOp<UMulHigh> getUMulHigh() {
+        return umulHigh;
+    }
+
+    /**
      * Describes the division operation.
      */
     public BinaryOp<Div> getDiv() {
@@ -321,6 +343,8 @@
                Objects.equals(add, that.add) &&
                Objects.equals(sub, that.sub) &&
                Objects.equals(mul, that.mul) &&
+               Objects.equals(mulHigh, that.mulHigh) &&
+               Objects.equals(umulHigh, that.umulHigh) &&
                Objects.equals(div, that.div) &&
                Objects.equals(rem, that.rem) &&
                Objects.equals(not, that.not) &&
@@ -360,8 +384,8 @@
 
     @Override
     public String toString() {
-        return getClass().getSimpleName() + "[" + toString(neg, add, sub, mul, div, rem, not, and, or, xor, shl, shr, ushr, abs, sqrt, zeroExtend, signExtend, narrow) + ",floatConvert[" +
-                        toString(floatConvert) + "]]";
+        return getClass().getSimpleName() + "[" + toString(neg, add, sub, mul, mulHigh, umulHigh, div, rem, not, and, or, xor, shl, shr, ushr, abs, sqrt, zeroExtend, signExtend, narrow) +
+                        ",floatConvert[" + toString(floatConvert) + "]]";
     }
 
     public abstract static class Op {
@@ -479,6 +503,20 @@
             }
         }
 
+        public abstract static class MulHigh extends BinaryOp<MulHigh> {
+
+            protected MulHigh(boolean associative, boolean commutative) {
+                super("*H", associative, commutative);
+            }
+        }
+
+        public abstract static class UMulHigh extends BinaryOp<UMulHigh> {
+
+            protected UMulHigh(boolean associative, boolean commutative) {
+                super("|*H|", associative, commutative);
+            }
+        }
+
         public abstract static class Div extends BinaryOp<Div> {
 
             protected Div(boolean associative, boolean commutative) {
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/FloatStamp.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/FloatStamp.java	Wed Aug 23 11:24:50 2017 -0700
@@ -302,7 +302,7 @@
         return null;
     }
 
-    private static final ArithmeticOpTable OPS = new ArithmeticOpTable(
+    public static final ArithmeticOpTable OPS = new ArithmeticOpTable(
 
                     new UnaryOp.Neg() {
 
@@ -437,6 +437,10 @@
                         }
                     },
 
+                    null,
+
+                    null,
+
                     new BinaryOp.Div(false, false) {
 
                         @Override
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/IntegerStamp.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/IntegerStamp.java	Wed Aug 23 11:24:50 2017 -0700
@@ -858,6 +858,164 @@
                         }
                     },
 
+                    new BinaryOp.MulHigh(true, true) {
+
+                        @Override
+                        public Constant foldConstant(Constant const1, Constant const2) {
+                            PrimitiveConstant a = (PrimitiveConstant) const1;
+                            PrimitiveConstant b = (PrimitiveConstant) const2;
+                            assert a.getJavaKind() == b.getJavaKind();
+                            return JavaConstant.forIntegerKind(a.getJavaKind(), multiplyHigh(a.asLong(), b.asLong(), a.getJavaKind()));
+                        }
+
+                        @Override
+                        public Stamp foldStamp(Stamp stamp1, Stamp stamp2) {
+                            IntegerStamp a = (IntegerStamp) stamp1;
+                            IntegerStamp b = (IntegerStamp) stamp2;
+                            JavaKind javaKind = a.getStackKind();
+
+                            assert a.getBits() == b.getBits();
+                            assert javaKind == b.getStackKind();
+                            assert (javaKind == JavaKind.Int || javaKind == JavaKind.Long);
+
+                            if (a.isEmpty() || b.isEmpty()) {
+                                return a.empty();
+                            } else if (a.isUnrestricted() || b.isUnrestricted()) {
+                                return a.unrestricted();
+                            }
+
+                            long[] xExtremes = {a.lowerBound(), a.upperBound()};
+                            long[] yExtremes = {b.lowerBound(), b.upperBound()};
+                            long min = Long.MAX_VALUE;
+                            long max = Long.MIN_VALUE;
+                            for (long x : xExtremes) {
+                                for (long y : yExtremes) {
+                                    long result = multiplyHigh(x, y, javaKind);
+                                    min = Math.min(min, result);
+                                    max = Math.max(max, result);
+                                }
+                            }
+                            return StampFactory.forInteger(javaKind, min, max);
+                        }
+
+                        @Override
+                        public boolean isNeutral(Constant value) {
+                            return false;
+                        }
+
+                        private long multiplyHigh(long x, long y, JavaKind javaKind) {
+                            if (javaKind == JavaKind.Int) {
+                                return (x * y) >> 32;
+                            } else {
+                                assert javaKind == JavaKind.Long;
+                                long x0 = x & 0xFFFFFFFFL;
+                                long x1 = x >> 32;
+
+                                long y0 = y & 0xFFFFFFFFL;
+                                long y1 = y >> 32;
+
+                                long z0 = x0 * y0;
+                                long t = x1 * y0 + (z0 >>> 32);
+                                long z1 = t & 0xFFFFFFFFL;
+                                long z2 = t >> 32;
+                                z1 += x0 * y1;
+
+                                return x1 * y1 + z2 + (z1 >> 32);
+                            }
+                        }
+                    },
+
+                    new BinaryOp.UMulHigh(true, true) {
+
+                        @Override
+                        public Constant foldConstant(Constant const1, Constant const2) {
+                            PrimitiveConstant a = (PrimitiveConstant) const1;
+                            PrimitiveConstant b = (PrimitiveConstant) const2;
+                            assert a.getJavaKind() == b.getJavaKind();
+                            return JavaConstant.forIntegerKind(a.getJavaKind(), multiplyHighUnsigned(a.asLong(), b.asLong(), a.getJavaKind()));
+                        }
+
+                        @Override
+                        public Stamp foldStamp(Stamp stamp1, Stamp stamp2) {
+                            IntegerStamp a = (IntegerStamp) stamp1;
+                            IntegerStamp b = (IntegerStamp) stamp2;
+                            JavaKind javaKind = a.getStackKind();
+
+                            assert a.getBits() == b.getBits();
+                            assert javaKind == b.getStackKind();
+                            assert (javaKind == JavaKind.Int || javaKind == JavaKind.Long);
+
+                            if (a.isEmpty() || b.isEmpty()) {
+                                return a.empty();
+                            } else if (a.isUnrestricted() || b.isUnrestricted()) {
+                                return a.unrestricted();
+                            }
+
+                            // Note that the minima and maxima are calculated using signed min/max
+                            // functions, while the values themselves are unsigned.
+                            long[] xExtremes = getUnsignedExtremes(a);
+                            long[] yExtremes = getUnsignedExtremes(b);
+                            long min = Long.MAX_VALUE;
+                            long max = Long.MIN_VALUE;
+                            for (long x : xExtremes) {
+                                for (long y : yExtremes) {
+                                    long result = multiplyHighUnsigned(x, y, javaKind);
+                                    min = Math.min(min, result);
+                                    max = Math.max(max, result);
+                                }
+                            }
+
+                            // if min is negative, then the value can reach into the unsigned range
+                            if (min == max || min >= 0) {
+                                return StampFactory.forInteger(javaKind, min, max);
+                            } else {
+                                return StampFactory.forKind(javaKind);
+                            }
+                        }
+
+                        @Override
+                        public boolean isNeutral(Constant value) {
+                            return false;
+                        }
+
+                        private long[] getUnsignedExtremes(IntegerStamp stamp) {
+                            if (stamp.lowerBound() < 0 && stamp.upperBound() >= 0) {
+                                /*
+                                 * If -1 and 0 are both in the signed range, then we can't say
+                                 * anything about the unsigned range, so we have to return [0,
+                                 * MAX_UNSIGNED].
+                                 */
+                                return new long[]{0, -1L};
+                            } else {
+                                return new long[]{stamp.lowerBound(), stamp.upperBound()};
+                            }
+                        }
+
+                        private long multiplyHighUnsigned(long x, long y, JavaKind javaKind) {
+                            if (javaKind == JavaKind.Int) {
+                                long xl = x & 0xFFFFFFFFL;
+                                long yl = y & 0xFFFFFFFFL;
+                                long r = xl * yl;
+                                return (int) (r >>> 32);
+                            } else {
+                                assert javaKind == JavaKind.Long;
+                                long x0 = x & 0xFFFFFFFFL;
+                                long x1 = x >>> 32;
+
+                                long y0 = y & 0xFFFFFFFFL;
+                                long y1 = y >>> 32;
+
+                                long z0 = x0 * y0;
+                                long t = x1 * y0 + (z0 >>> 32);
+                                long z1 = t & 0xFFFFFFFFL;
+                                long z2 = t >>> 32;
+                                z1 += x0 * y1;
+
+                                return x1 * y1 + z2 + (z1 >>> 32);
+                            }
+                        }
+                    },
+
                     new BinaryOp.Div(true, false) {
 
                         @Override
@@ -1046,10 +1204,14 @@
                         public Stamp foldStamp(Stamp stamp, IntegerStamp shift) {
                             IntegerStamp value = (IntegerStamp) stamp;
                             int bits = value.getBits();
-                            long defaultMask = CodeUtil.mask(bits);
-                            if (value.upMask() == 0) {
+                            if (value.isEmpty()) {
+                                return value;
+                            } else if (shift.isEmpty()) {
+                                return StampFactory.forInteger(bits).empty();
+                            } else if (value.upMask() == 0) {
                                 return value;
                             }
+
                             int shiftMask = getShiftAmountMask(stamp);
                             int shiftBits = Integer.bitCount(shiftMask);
                             if (shift.lowerBound() == shift.upperBound()) {
@@ -1068,6 +1230,7 @@
                                 }
                             }
                             if ((shift.lowerBound() >>> shiftBits) == (shift.upperBound() >>> shiftBits)) {
+                                long defaultMask = CodeUtil.mask(bits);
                                 long downMask = defaultMask;
                                 long upMask = 0;
                                 for (long i = shift.lowerBound(); i <= shift.upperBound(); i++) {
@@ -1109,7 +1272,11 @@
                         public Stamp foldStamp(Stamp stamp, IntegerStamp shift) {
                             IntegerStamp value = (IntegerStamp) stamp;
                             int bits = value.getBits();
-                            if (shift.lowerBound() == shift.upperBound()) {
+                            if (value.isEmpty()) {
+                                return value;
+                            } else if (shift.isEmpty()) {
+                                return StampFactory.forInteger(bits).empty();
+                            } else if (shift.lowerBound() == shift.upperBound()) {
                                 long shiftCount = shift.lowerBound() & getShiftAmountMask(stamp);
                                 if (shiftCount == 0) {
                                     return stamp;
@@ -1153,6 +1320,12 @@
                         public Stamp foldStamp(Stamp stamp, IntegerStamp shift) {
                             IntegerStamp value = (IntegerStamp) stamp;
                             int bits = value.getBits();
+                            if (value.isEmpty()) {
+                                return value;
+                            } else if (shift.isEmpty()) {
+                                return StampFactory.forInteger(bits).empty();
+                            }
+
                             if (shift.lowerBound() == shift.upperBound()) {
                                 long shiftCount = shift.lowerBound() & getShiftAmountMask(stamp);
                                 if (shiftCount == 0) {
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnsafeReadEliminationTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnsafeReadEliminationTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -46,6 +46,16 @@
     public static double SideEffectD;
     public static double SideEffectL;
 
+    private static final long byteArrayBaseOffset;
+    private static final long intArrayBaseOffset;
+    private static final long longArrayBaseOffset;
+
+    static {
+        byteArrayBaseOffset = UNSAFE.arrayBaseOffset(byte[].class);
+        intArrayBaseOffset = UNSAFE.arrayBaseOffset(int[].class);
+        longArrayBaseOffset = UNSAFE.arrayBaseOffset(long[].class);
+    }
+
     public static long test1Snippet(double a) {
         final Object m = Memory;
         if (a > 0) {
@@ -130,4 +140,76 @@
         Assert.assertEquals(writes, graph.getNodes().filter(WriteNode.class).count());
     }
 
+    public static int testWriteIntToByteArraySnippet() {
+        byte[] array = new byte[4];
+        UNSAFE.putInt(array, byteArrayBaseOffset, 0x01020304);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteIntToByteArray() {
+        test("testWriteIntToByteArraySnippet");
+    }
+
+    public static byte testWriteSignedExtendedByteToByteArraySnippet(byte b) {
+        byte[] array = new byte[4];
+        array[0] = 0x01;
+        array[1] = 0x02;
+        array[2] = 0x03;
+        array[3] = 0x04;
+        UNSAFE.putInt(array, byteArrayBaseOffset, b);
+        return array[3];
+    }
+
+    @Test
+    public void testWriteSignedExtendedByteToByteArray() {
+        test("testWriteSignedExtendedByteToByteArraySnippet", (byte) 0);
+    }
+
+    public static int testWriteLongToIntArraySnippet() {
+        int[] array = new int[2];
+        UNSAFE.putLong(array, intArrayBaseOffset, 0x0102030405060708L);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteLongToIntArray() {
+        test("testWriteLongToIntArraySnippet");
+    }
+
+    public static int testWriteByteToIntArraySnippet() {
+        int[] array = new int[1];
+        array[0] = 0x01020304;
+        UNSAFE.putByte(array, intArrayBaseOffset, (byte) 0x05);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteByteToIntArray() {
+        test("testWriteByteToIntArraySnippet");
+    }
+
+    public static long testWriteIntToLongArraySnippet() {
+        long[] array = new long[1];
+        array[0] = 0x0102030405060708L;
+        UNSAFE.putInt(array, longArrayBaseOffset, 0x04030201);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteIntToLongArray() {
+        test("testWriteIntToLongArraySnippet");
+    }
+
+    public static float testWriteFloatToIntArraySnippet() {
+        float[] array = new float[1];
+        UNSAFE.putInt(array, intArrayBaseOffset, Float.floatToRawIntBits(0.5f));
+        return array[0];
+    }
+
+    @Test
+    public void testWriteFloatToIntArray() {
+        test("testWriteFloatToIntArraySnippet");
+    }
+
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/UnsafeEATest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/UnsafeEATest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -38,10 +38,6 @@
     private static final long fieldOffset1;
     private static final long fieldOffset2;
 
-    private static final long byteArrayBaseOffset;
-    private static final long intArrayBaseOffset;
-    private static final long longArrayBaseOffset;
-
     static {
         try {
             long localFieldOffset1 = UNSAFE.objectFieldOffset(TestClassInt.class.getField("x"));
@@ -55,9 +51,6 @@
                 fieldOffset2 = UNSAFE.objectFieldOffset(TestClassInt.class.getField("z"));
             }
             assert fieldOffset2 == fieldOffset1 + 4;
-            byteArrayBaseOffset = UNSAFE.arrayBaseOffset(byte[].class);
-            intArrayBaseOffset = UNSAFE.arrayBaseOffset(int[].class);
-            longArrayBaseOffset = UNSAFE.arrayBaseOffset(long[].class);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -203,76 +196,4 @@
         return x;
     }
 
-    public static int testWriteIntToByteArraySnippet() {
-        byte[] array = new byte[4];
-        UNSAFE.putInt(array, byteArrayBaseOffset, 0x01020304);
-        return array[0];
-    }
-
-    @Test
-    public void testWriteIntToByteArray() {
-        test("testWriteIntToByteArraySnippet");
-    }
-
-    public static byte testWriteSignedExtendedByteToByteArraySnippet(byte b) {
-        byte[] array = new byte[4];
-        array[0] = 0x01;
-        array[1] = 0x02;
-        array[2] = 0x03;
-        array[3] = 0x04;
-        UNSAFE.putInt(array, byteArrayBaseOffset, b);
-        return array[3];
-    }
-
-    @Test
-    public void testWriteSignedExtendedByteToByteArray() {
-        test("testWriteSignedExtendedByteToByteArraySnippet", (byte) 0);
-    }
-
-    public static int testWriteLongToIntArraySnippet() {
-        int[] array = new int[2];
-        UNSAFE.putLong(array, intArrayBaseOffset, 0x0102030405060708L);
-        return array[0];
-    }
-
-    @Test
-    public void testWriteLongToIntArray() {
-        test("testWriteLongToIntArraySnippet");
-    }
-
-    public static int testWriteByteToIntArraySnippet() {
-        int[] array = new int[1];
-        array[0] = 0x01020304;
-        UNSAFE.putByte(array, intArrayBaseOffset, (byte) 0x05);
-        return array[0];
-    }
-
-    @Test
-    public void testWriteByteToIntArray() {
-        test("testWriteByteToIntArraySnippet");
-    }
-
-    public static long testWriteIntToLongArraySnippet() {
-        long[] array = new long[1];
-        array[0] = 0x0102030405060708L;
-        UNSAFE.putInt(array, longArrayBaseOffset, 0x04030201);
-        return array[0];
-    }
-
-    @Test
-    public void testWriteIntToLongArray() {
-        test("testWriteIntToLongArraySnippet");
-    }
-
-    public static float testWriteFloatToIntArraySnippet() {
-        float[] array = new float[1];
-        UNSAFE.putInt(array, intArrayBaseOffset, Float.floatToRawIntBits(0.5f));
-        return array[0];
-    }
-
-    @Test
-    public void testWriteFloatToIntArray() {
-        test("testWriteFloatToIntArraySnippet");
-    }
-
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationPrinter.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationPrinter.java	Wed Aug 23 11:24:50 2017 -0700
@@ -58,6 +58,11 @@
      */
     public static CompilationPrinter begin(OptionValues options, CompilationIdentifier id, JavaMethod method, int entryBCI) {
         if (PrintCompilation.getValue(options) && !TTY.isSuppressed()) {
+            try {
+                Class.forName("java.lang.management.ManagementFactory");
+            } catch (ClassNotFoundException ex) {
+                throw new IllegalArgumentException("PrintCompilation option requires java.management module");
+            }
             return new CompilationPrinter(id, method, entryBCI);
         }
         return DISABLED;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationWrapper.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/CompilationWrapper.java	Wed Aug 23 11:24:50 2017 -0700
@@ -82,26 +82,6 @@
          */
         ExitVM;
 
-        static ValueHelp HELP = new ValueHelp();
-
-        static class ValueHelp implements EnumOptionKey.ValueHelp<ExceptionAction> {
-            @Override
-            public String getHelp(Object value) {
-                ExceptionAction action = (ExceptionAction) value;
-                switch (action) {
-                    case Silent:
-                        return action + ": Print nothing to the console.";
-                    case Print:
-                        return action + ": Print a stack trace to the console.";
-                    case Diagnose:
-                        return action + ": Retry the compilation with extra diagnostics.";
-                    case ExitVM:
-                        return action + ": Same as " + Diagnose + " except that the VM process exits after retrying.";
-                }
-                return null;
-            }
-        }
-
         /**
          * Gets the action that is one level less verbose than this action, bottoming out at the
          * least verbose action.
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompilerOptions.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompilerOptions.java	Wed Aug 23 11:24:50 2017 -0700
@@ -36,13 +36,15 @@
     // @formatter:off
     @Option(help = "Print an informational line to the console for each completed compilation.", type = OptionType.Debug)
     public static final OptionKey<Boolean> PrintCompilation = new OptionKey<>(false);
-    @Option(help = "Pattern (see MethodFilter for format) for method that will trigger an exception when compiled. " +
-                   "This option exists to test handling compilation crashes gracefully.", type = OptionType.Debug)
+    @Option(help = "Pattern for method(s) that will trigger an exception when compiled. " +
+                   "This option exists to test handling compilation crashes gracefully. " +
+                   "See the MethodFilter option for the pattern syntax. ", type = OptionType.Debug)
     public static final OptionKey<String> CrashAt = new OptionKey<>(null);
-    @Option(help = "The action to take when compilation fails with a non-bailout exception.", type = OptionType.User)
-    public static final EnumOptionKey<ExceptionAction> CompilationFailureAction = new EnumOptionKey<>(ExceptionAction.Diagnose, ExceptionAction.HELP);
-    @Option(help = "The action to take when compilation fails with a bailout exception.", type = OptionType.User)
-    public static final EnumOptionKey<ExceptionAction> CompilationBailoutAction = new EnumOptionKey<>(ExceptionAction.Silent, ExceptionAction.HELP);
+    @Option(help = "file:doc-files/CompilationBailoutActionHelp.txt", type = OptionType.User)
+    public static final EnumOptionKey<ExceptionAction> CompilationBailoutAction = new EnumOptionKey<>(ExceptionAction.Silent);
+    @Option(help = "Specifies the action to take when compilation fails with a bailout exception. " +
+                    "The accepted values are the same as for CompilationBailoutAction.", type = OptionType.User)
+     public static final EnumOptionKey<ExceptionAction> CompilationFailureAction = new EnumOptionKey<>(ExceptionAction.Diagnose);
     @Option(help = "The maximum number of compilation failures or bailouts to handle with the action specified " +
                    "by CompilationFailureAction or CompilationBailoutAction before changing to a less verbose action.", type = OptionType.User)
     public static final OptionKey<Integer> MaxCompilationProblemsPerAction = new OptionKey<>(5);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/doc-files/CompilationBailoutActionHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,6 @@
+Specifies the action to take when compilation fails with a bailout exception.
+The accepted values are:
+    Silent - Print nothing to the console.
+     Print - Print a stack trace to the console.
+  Diagnose - Retry the compilation with extra diagnostics.
+    ExitVM - Same as Diagnose except that the VM process exits after retrying.
\ No newline at end of file
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugContext.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugContext.java	Wed Aug 23 11:24:50 2017 -0700
@@ -198,9 +198,22 @@
 
         private Immutable(OptionValues options) {
             this.options = options;
+            String timeValue = Time.getValue(options);
+            String trackMemUseValue = TrackMemUse.getValue(options);
             this.unscopedCounters = parseUnscopedMetricSpec(Counters.getValue(options), "".equals(Count.getValue(options)), false);
-            this.unscopedTimers = parseUnscopedMetricSpec(Timers.getValue(options), "".equals(Time.getValue(options)), true);
-            this.unscopedMemUseTrackers = parseUnscopedMetricSpec(MemUseTrackers.getValue(options), "".equals(TrackMemUse.getValue(options)), true);
+            this.unscopedTimers = parseUnscopedMetricSpec(Timers.getValue(options), "".equals(timeValue), true);
+            this.unscopedMemUseTrackers = parseUnscopedMetricSpec(MemUseTrackers.getValue(options), "".equals(trackMemUseValue), true);
+
+            if (unscopedTimers != null ||
+                            unscopedMemUseTrackers != null ||
+                            timeValue != null ||
+                            trackMemUseValue != null) {
+                try {
+                    Class.forName("java.lang.management.ManagementFactory");
+                } catch (ClassNotFoundException ex) {
+                    throw new IllegalArgumentException("Time, Timers, MemUseTrackers and TrackMemUse options require java.management module");
+                }
+            }
 
             this.scopesEnabled = DumpOnError.getValue(options) ||
                             Dump.getValue(options) != null ||
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugFilter.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugFilter.java	Wed Aug 23 11:24:50 2017 -0700
@@ -28,8 +28,11 @@
 import org.graalvm.compiler.debug.DebugContext.Scope;
 
 /**
- * Implements the filter specified by the {@link DebugOptions#Dump}, {@link DebugOptions#Log},
- * {@link DebugOptions#Count} and {@link DebugOptions#Time} options.
+ * Implements the filter specified by options such as {@link DebugOptions#Dump},
+ * {@link DebugOptions#Log}, {@link DebugOptions#Count} and {@link DebugOptions#Time}.
+ *
+ * See <a href="DumpHelp.txt">here</a> for a description of the filter syntax.
+ *
  * <p>
  * These options enable the associated debug facility if their filter matches the
  * {@linkplain Scope#getQualifiedName() name} of the current scope. For the
@@ -37,47 +40,7 @@
  * {@link DebugOptions#Count} and {@link DebugOptions#Time} options don't have a level, for them
  * {@code level = 0} means disabled and a {@code level > 0} means enabled.
  * <p>
- * A filter is a list of comma-separated terms of the form {@code <pattern>[:<level>]}. {@code
- * <pattern>} is interpreted as a glob pattern if it contains a "*" or "?" character. Otherwise, it
- * is interpreted as a substring. If {@code <pattern>} is empty, it matches every scope. If {@code :
- * <level>} is omitted, it defaults to {@link DebugContext#BASIC_LEVEL}. The term {@code ~<pattern>}
- * is a shorthand for {@code <pattern>:0} to disable a debug facility for a pattern.
- * <p>
- * The resulting log level of a scope is determined by the <em>last</em> matching term. If no term
- * matches, the log level is 0 (disabled). A filter with no terms matches every scope with a log
- * level of {@link DebugContext#BASIC_LEVEL}.
- *
- * <h2>Examples of filters</h2>
- *
- * <ul>
- * <li>(empty string)<br>
- * Matches any scope with log level {@link DebugContext#BASIC_LEVEL}.
- *
- * <li>{@code :1}<br>
- * Matches any scope with log level 1.
- *
- * <li>{@code *}<br>
- * Matches any scope with log level {@link DebugContext#BASIC_LEVEL}.
- *
- * <li>{@code CodeGen,CodeInstall}<br>
- * Matches scopes containing "CodeGen" or "CodeInstall", both with log level
- * {@link DebugContext#BASIC_LEVEL}.
- *
- * <li>{@code CodeGen:2,CodeInstall:1}<br>
- * Matches scopes containing "CodeGen" with log level 2, or "CodeInstall" with log level 1.
- *
- * <li>{@code :1,Dead:2}<br>
- * Matches scopes containing "Dead" with log level 2, and all other scopes with log level 1.
- *
- * <li>{@code :1,Dead:0}<br>
- * Matches all scopes with log level 1, except those containing "Dead".
- *
- * <li>{@code Code*}<br>
- * Matches scopes starting with "Code" with log level {@link DebugContext#BASIC_LEVEL}.
- *
- * <li>{@code Code,~Dead}<br>
- * Matches scopes containing "Code" but not "Dead", with log level {@link DebugContext#BASIC_LEVEL}.
- * </ul>
+ * The syntax for a filter is explained <a href="file:doc-files/DumpHelp.txt">here</a>.
  */
 final class DebugFilter {
 
@@ -148,13 +111,16 @@
         if (terms == null) {
             return DebugContext.BASIC_LEVEL;
         } else {
-            int level = 0;
+            int defaultLevel = 0;
+            int level = -1;
             for (Term t : terms) {
-                if (t.matches(input)) {
+                if (t.isMatchAny()) {
+                    defaultLevel = t.level;
+                } else if (t.matches(input)) {
                     level = t.level;
                 }
             }
-            return level;
+            return level == -1 ? defaultLevel : level;
         }
     }
 
@@ -176,7 +142,7 @@
 
         Term(String filter, int level) {
             this.level = level;
-            if (filter.isEmpty()) {
+            if (filter.isEmpty() || filter.equals("*")) {
                 this.pattern = null;
             } else if (filter.contains("*") || filter.contains("?")) {
                 this.pattern = Pattern.compile(MethodFilter.createGlobString(filter));
@@ -192,6 +158,10 @@
             return pattern == null || pattern.matcher(input).matches();
         }
 
+        public boolean isMatchAny() {
+            return pattern == null;
+        }
+
         @Override
         public String toString() {
             return (pattern == null ? ".*" : pattern.toString()) + ":" + level;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugOptions.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugOptions.java	Wed Aug 23 11:24:50 2017 -0700
@@ -64,24 +64,28 @@
                    "An empty value enables all memory usage trackers unconditionally.", type = OptionType.Debug)
     public static final OptionKey<String> MemUseTrackers = new OptionKey<>(null);
 
-    @Option(help = "Pattern for scope(s) in which counting is enabled (see DebugFilter and Debug.counter). " +
+    @Option(help = "Pattern for specifying scopes in which counters are enabled. " +
+                   "See the Dump option for the pattern syntax. " +
                    "An empty value enables all counters unconditionally.", type = OptionType.Debug)
     public static final OptionKey<String> Count = new OptionKey<>(null);
-    @Option(help = "Pattern for scope(s) in which memory use tracking is enabled (see DebugFilter and Debug.counter). " +
+    @Option(help = "Pattern for specifying scopes in which memory use tracking is enabled. " +
+                   "See the Dump option for the pattern syntax. " +
                    "An empty value enables all memory use trackers unconditionally.", type = OptionType.Debug)
     public static final OptionKey<String> TrackMemUse = new OptionKey<>(null);
-    @Option(help = "Pattern for scope(s) in which timing is enabled (see DebugFilter and Debug.timer). " +
+    @Option(help = "Pattern for specifying scopes in which timing is enabled. " +
+                   "See the Dump option for the pattern syntax. " +
                    "An empty value enables all timers unconditionally.", type = OptionType.Debug)
     public static final OptionKey<String> Time = new OptionKey<>(null);
 
-    @Option(help = "Pattern for scope(s) in which verification is enabled (see DebugFilter and Debug.verify).", type = OptionType.Debug)
+    @Option(help = "Pattern for specifying scopes in which logging is enabled. " +
+                   "See the Dump option for the pattern syntax.", type = OptionType.Debug)
     public static final OptionKey<String> Verify = new OptionKey<>(null);
-    @Option(help = "Pattern for scope(s) in which dumping is enabled (see DebugFilter and Debug.dump)", type = OptionType.Debug)
+    @Option(help = "file:doc-files/DumpHelp.txt", type = OptionType.Debug)
     public static final OptionKey<String> Dump = new OptionKey<>(null);
-    @Option(help = "Pattern for scope(s) in which logging is enabled (see DebugFilter and Debug.log)", type = OptionType.Debug)
+    @Option(help = "Pattern for specifying scopes in which logging is enabled. " +
+                   "See the Dump option for the pattern syntax.", type = OptionType.Debug)
     public static final OptionKey<String> Log = new OptionKey<>(null);
-
-    @Option(help = "Pattern for filtering debug scope output based on method context (see MethodFilter)", type = OptionType.Debug)
+    @Option(help = "file:doc-files/MethodFilterHelp.txt")
     public static final OptionKey<String> MethodFilter = new OptionKey<>(null);
     @Option(help = "Only check MethodFilter against the root method in the context if true, otherwise check all methods", type = OptionType.Debug)
     public static final OptionKey<Boolean> MethodFilterRootOnly = new OptionKey<>(false);
@@ -89,13 +93,11 @@
                    "The argument is substring matched against the simple name of the phase class", type = OptionType.Debug)
     public static final OptionKey<String> DumpOnPhaseChange = new OptionKey<>(null);
 
-    @Option(help = "Listst the console at VM shutdown the metric names available to the Timers, Counters and MemUseTrackers option. " +
+    @Option(help = "Lists on the console at VM shutdown the metric names available to the Timers, Counters and MemUseTrackers options. " +
                    "Note that this only lists the metrics that were initialized during the VM execution and so " +
                    "will not include metrics for compiler code that is not executed.", type = OptionType.Debug)
     public static final OptionKey<Boolean> ListMetrics = new OptionKey<>(false);
-    @Option(help = "File to which metrics are dumped per compilation. A CSV format is used if the file ends with .csv " +
-                    "otherwise a more human readable format is used. The fields in the CSV format are: " +
-                    "compilable, compilable_identity, compilation_nr, compilation_id, metric_name, metric_value", type = OptionType.Debug)
+    @Option(help = "file:doc-files/MetricsFileHelp.txt", type = OptionType.Debug)
      public static final OptionKey<String> MetricsFile = new OptionKey<>(null);
     @Option(help = "File to which aggregated metrics are dumped at shutdown. A CSV format is used if the file ends with .csv " +
                     "otherwise a more human readable format is used. If not specified, metrics are dumped to the console.", type = OptionType.Debug)
@@ -149,7 +151,7 @@
     @Option(help = "Enable dumping canonical text from for graphs.", type = OptionType.Debug)
     public static final OptionKey<Boolean> PrintCanonicalGraphStrings = new OptionKey<>(false);
     @Option(help = "Choose format used when dumping canonical text for graphs: " +
-            "0 gives a scheduled graph (better for spotting changes involving the schedule)" +
+            "0 gives a scheduled graph (better for spotting changes involving the schedule) " +
             "while 1 gives a CFG containing expressions rooted at fixed nodes (better for spotting small structure differences)", type = OptionType.Debug)
     public static final OptionKey<Integer> PrintCanonicalGraphStringFlavor = new OptionKey<>(0);
     @Option(help = "Exclude virtual nodes when dumping canonical text for graphs.", type = OptionType.Debug)
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/MethodFilter.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/MethodFilter.java	Wed Aug 23 11:24:50 2017 -0700
@@ -31,66 +31,7 @@
 
 /**
  * This class implements a method filter that can filter based on class name, method name and
- * parameters. The syntax for the source pattern that is passed to the constructor is as follows:
- *
- * <pre>
- * SourcePatterns = SourcePattern ["," SourcePatterns] .
- * SourcePattern = [ Class "." ] method [ "(" [ Parameter { ";" Parameter } ] ")" ] .
- * Parameter = Class | "int" | "long" | "float" | "double" | "short" | "char" | "boolean" .
- * Class = { package "." } class .
- * </pre>
- *
- *
- * Glob pattern matching (*, ?) is allowed in all parts of the source pattern. Examples for valid
- * filters are:
- *
- * <ul>
- * <li>
- *
- * <pre>
- * visit(Argument;BlockScope)
- * </pre>
- *
- * Matches all methods named "visit", with the first parameter of type "Argument", and the second
- * parameter of type "BlockScope". The packages of the parameter types are irrelevant.</li>
- * <li>
- *
- * <pre>
- * arraycopy(Object;;;;)
- * </pre>
- *
- * Matches all methods named "arraycopy", with the first parameter of type "Object", and four more
- * parameters of any type. The packages of the parameter types are irrelevant.</li>
- * <li>
- *
- * <pre>
- * org.graalvm.compiler.core.graph.PostOrderNodeIterator.*
- * </pre>
- *
- * Matches all methods in the class "org.graalvm.compiler.core.graph.PostOrderNodeIterator".</li>
- * <li>
- *
- * <pre>
- * *
- * </pre>
- *
- * Matches all methods in all classes</li>
- * <li>
- *
- * <pre>
- * org.graalvm.compiler.core.graph.*.visit
- * </pre>
- *
- * Matches all methods named "visit" in classes in the package "org.graalvm.compiler.core.graph".
- * <li>
- *
- * <pre>
- * arraycopy,toString
- * </pre>
- *
- * Matches all methods named "arraycopy" or "toString", meaning that ',' acts as an <i>or</i>
- * operator.</li>
- * </ul>
+ * parameters. The syntax for a filter is explained <a href="MethodFilterHelp.txt">here</a>.
  */
 public class MethodFilter {
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/DumpHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,61 @@
+Filter pattern for specifying scopes in which dumping is enabled.
+
+A filter is a list of comma-separated terms of the form:
+ 
+  <pattern>[:<level>]
+ 
+If <pattern> contains a "*" or "?" character, it is interpreted as a glob pattern.
+Otherwise, it is interpreted as a substring. If <pattern> is empty, it
+matches every scope. If :<level> is omitted, it defaults to 1. The term
+~<pattern> is a shorthand for <pattern>:0 to disable a debug facility for a pattern.
+
+The default log level is 0 (disabled). Terms with an empty pattern set
+the default log level to the specified value. The last
+matching term with a non-empty pattern selects the level specified. If
+no term matches, the log level is the default level. A filter with no
+terms matches every scope with a log level of 1.
+
+Examples of debug filters:
+--------- 
+  (empty string)
+
+  Matches any scope with level 1.
+--------- 
+  :1
+
+  Matches any scope with level 1.
+--------- 
+  *
+
+  Matches any scope with level 1.
+--------- 
+  CodeGen,CodeInstall
+
+  Matches scopes containing "CodeGen" or "CodeInstall", both with level 1.
+--------- 
+  CodeGen:2,CodeInstall:1
+
+  Matches scopes containing "CodeGen" with level 2, or "CodeInstall" with level 1.
+---------
+  Outer:2,Inner:0}
+
+  Matches scopes containing "Outer" with log level 2, or "Inner" with log level 0. If the scope
+  name contains both patterns then the log level will be 0. This is useful for silencing subscopes.
+---------
+  :1,Dead:2
+
+  Matches scopes containing "Dead" with level 2, and all other scopes with level 1.
+--------- 
+  Dead:0,:1
+
+  Matches all scopes with level 1, except those containing "Dead".   Note that the location of
+  the :1 doesn't matter since it's specifying the default log level so it's the same as
+  specifying :1,Dead:0.
+--------- 
+  Code*
+
+  Matches scopes starting with "Code" with level 1.
+--------- 
+  Code,~Dead
+
+  Matches scopes containing "Code" but not "Dead", with level 1.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/MethodFilterHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,40 @@
+Pattern for filtering debug scope output based on method context.
+The syntax for a pattern is:
+
+  SourcePatterns = SourcePattern ["," SourcePatterns] .
+  SourcePattern = [ Class "." ] method [ "(" [ Parameter { ";" Parameter } ] ")" ] .
+  Parameter = Class | "int" | "long" | "float" | "double" | "short" | "char" | "boolean" .
+  Class = { package "." } class .
+ 
+Glob pattern matching (*, ?) is allowed in all parts of the source pattern.
+
+Examples of method filters:
+--------- 
+  visit(Argument;BlockScope)  
+  
+  Matches all methods named "visit", with the first parameter of
+  type "Argument", and the second parameter of type "BlockScope".
+  The packages of the parameter types are irrelevant.
+---------
+  arraycopy(Object;;;;)
+ 
+  Matches all methods named "arraycopy", with the first parameter
+  of type "Object", and four more parameters of any type. The
+  packages of the parameter types are irrelevant.
+---------    
+  org.graalvm.compiler.core.graph.PostOrderNodeIterator.*
+ 
+  Matches all methods in the class "org.graalvm.compiler.core.graph.PostOrderNodeIterator".
+---------    
+  *
+ 
+  Matches all methods in all classes
+---------
+  org.graalvm.compiler.core.graph.*.visit
+ 
+  Matches all methods named "visit" in classes in the package
+  "org.graalvm.compiler.core.graph".
+---------
+  arraycopy,toString
+ 
+  Matches all methods named "arraycopy" or "toString", meaning that ',' acts as an or operator.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/doc-files/MetricsFileHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,11 @@
+File to which metrics are dumped per compilation.
+A CSV format is used if the file ends with .csv otherwise a more
+human readable format is used. The fields in the CSV format are:
+           compilable - method being compiled
+  compilable_identity - identity hash code of compilable
+       compilation_nr - where this compilation lies in the ordered
+                        sequence of all compilations identified by
+                        compilable_identity
+       compilation_id - runtime issued identifier for the compilation
+          metric_name - name of metric
+         metric_value - value of metric
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.graph/src/org/graalvm/compiler/graph/NodeClass.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.graph/src/org/graalvm/compiler/graph/NodeClass.java	Wed Aug 23 11:24:50 2017 -0700
@@ -931,7 +931,7 @@
     }
 
     /**
-     * @returns true if the node has no inputs and no successors
+     * @return true if the node has no inputs and no successors
      */
     public boolean isLeafNode() {
         return isLeafNode;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/CompilationWrapperTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/CompilationWrapperTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -40,20 +40,12 @@
 import org.graalvm.compiler.test.SubprocessUtil;
 import org.graalvm.compiler.test.SubprocessUtil.Subprocess;
 import org.junit.Assert;
-import org.junit.Assume;
 import org.junit.Test;
 
 /**
  * Tests support for dumping graphs and other info useful for debugging a compiler crash.
  */
 public class CompilationWrapperTest extends GraalCompilerTest {
-    public CompilationWrapperTest() {
-        try {
-            Class.forName("java.lang.management.ManagementFactory");
-        } catch (ClassNotFoundException ex) {
-            Assume.assumeNoException("skip this test if there is no java.management JDK9 module around", ex);
-        }
-    }
 
     /**
      * Tests compilation requested by the VM.
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/ObjectCloneTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/ObjectCloneTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,6 +25,7 @@
 import java.util.ArrayList;
 
 import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration;
 import org.junit.Test;
 
 /**
@@ -84,4 +85,20 @@
         }
         test("cloneList", list);
     }
+
+    @Override
+    protected GraphBuilderConfiguration editGraphBuilderConfiguration(GraphBuilderConfiguration conf) {
+        return super.editGraphBuilderConfiguration(conf.withNodeSourcePosition(true));
+    }
+
+    static final int[] ARRAY = new int[]{1, 2, 4, 3};
+
+    public static int[] cloneConstantArray() {
+        return ARRAY.clone();
+    }
+
+    @Test
+    public void testCloneConstantArray() {
+        test("cloneConstantArray");
+    }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/CompilerConfigurationFactory.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/CompilerConfigurationFactory.java	Wed Aug 23 11:24:50 2017 -0700
@@ -157,8 +157,8 @@
     /**
      * Selects and instantiates a {@link CompilerConfigurationFactory}. The selection algorithm is
      * as follows: if {@code name} is non-null, then select the factory with the same name else if
-     * {@link Options#CompilerConfiguration}{@code .getValue()} is non-null then select the factory
-     * whose name matches the value else select the factory with the highest
+     * {@code Options.CompilerConfiguration.getValue()} is non-null then select the factory whose
+     * name matches the value else select the factory with the highest
      * {@link #autoSelectionPriority} value.
      *
      * @param name the name of the compiler configuration to select (optional)
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java	Wed Aug 23 11:24:50 2017 -0700
@@ -23,7 +23,6 @@
 package org.graalvm.compiler.hotspot;
 
 import java.util.Formatter;
-import java.util.Objects;
 
 /**
  * Mechanism for checking that the current Java runtime environment supports the minimum JVMCI API
@@ -40,10 +39,6 @@
     private static final int JVMCI8_MIN_MAJOR_VERSION = 0;
     private static final int JVMCI8_MIN_MINOR_VERSION = 29;
 
-    // MAX_VALUE indicates that no current EA version is compatible with Graal.
-    // Note: Keep README.md in sync with the EA version support checked here.
-    private static final int JVMCI9_MIN_EA_BUILD = 176;
-
     private static void failVersionCheck(boolean exit, String reason, Object... args) {
         Formatter errorMessage = new Formatter().format(reason, args);
         String javaHome = System.getProperty("java.home");
@@ -55,7 +50,7 @@
         if (System.getProperty("java.specification.version").compareTo("1.9") < 0) {
             errorMessage.format("Download the latest JVMCI JDK 8 from http://www.oracle.com/technetwork/oracle-labs/program-languages/downloads/index.html");
         } else {
-            errorMessage.format("Download the latest JDK 9 EA from https://jdk9.java.net/download/");
+            errorMessage.format("Download the latest JDK 9 build from https://jdk9.java.net/download/");
         }
         String value = System.getenv("JVMCI_VERSION_CHECK");
         if ("warn".equals(value)) {
@@ -119,34 +114,11 @@
                 // Allow local builds
                 return;
             }
-            // http://openjdk.java.net/jeps/223
-            if (vmVersion.startsWith("9+")) {
-                int start = "9+".length();
-                int end = start;
-                end = start;
-                while (end < vmVersion.length() && Character.isDigit(vmVersion.charAt(end))) {
-                    end++;
-                }
-                int build;
-                try {
-                    build = Integer.parseInt(vmVersion.substring(start, end));
-                } catch (NumberFormatException e) {
-                    failVersionCheck(exitOnFailure, "The VM does not support the minimum JVMCI API version required by Graal.%n" +
-                                    "Cannot read JDK9 EA build number from java.vm.version property: %s.%n", vmVersion);
-                    return;
-                }
-                if (build >= JVMCI9_MIN_EA_BUILD) {
-                    return;
-                }
-                if (Objects.equals(JVMCI9_MIN_EA_BUILD, Integer.MAX_VALUE)) {
-                    failVersionCheck(exitOnFailure, "This version of Graal is not compatible with any JDK 9 Early Access build.%n");
-                } else {
-                    failVersionCheck(exitOnFailure, "The VM is an insufficiently recent EA JDK9 build for Graal: %d < %d.%n", build, JVMCI9_MIN_EA_BUILD);
-                }
+            if (vmVersion.startsWith("9-ea")) {
+                failVersionCheck(exitOnFailure, "This version of Graal is not compatible with JDK 9 Early Access builds.%n");
                 return;
             } else {
-                // Graal will be compatible with all JDK versions as of 9 GA
-                // until a JVMCI API change is made in a 9u or later release.
+                // Graal is compatible with all JDK versions as of 9 GA.
             }
         }
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/debug/BenchmarkCounters.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/debug/BenchmarkCounters.java	Wed Aug 23 11:24:50 2017 -0700
@@ -41,7 +41,6 @@
 import org.graalvm.compiler.debug.GraalError;
 import org.graalvm.compiler.debug.TTY;
 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
-import org.graalvm.compiler.hotspot.replacements.HotspotSnippetsOptions;
 import org.graalvm.compiler.nodes.debug.DynamicCounterNode;
 import org.graalvm.compiler.options.Option;
 import org.graalvm.compiler.options.OptionKey;
@@ -69,20 +68,8 @@
  * Counters will be displayed as a rate (per second) if their group name starts with "~", otherwise
  * they will be displayed as a total number.
  *
- * <h1>Example</h1> In order to create statistics about allocations within the DaCapo pmd benchmark
- * the following steps are necessary:
- * <ul>
- * <li>Set {@code -XX:JVMCICounterSize=value}. The actual required value depends on the granularity
- * of the profiling, 10000 should be enough for most cases.</li>
- * <li>Also: {@code -XX:+/-JVMCICountersExcludeCompiler} specifies whether the numbers generated by
- * compiler threads should be excluded (default: true).</li>
- * <li>Start the DaCapo pmd benchmark with
- * {@code "-Dgraal.BenchmarkDynamicCounters=err, starting ====, PASSED in "} and
- * {@code -Dgraal.ProfileAllocations=true}.</li>
- * <li>The numbers will only include allocation from compiled code!</li>
- * <li>The counters can be further configured by modifying the
- * {@link HotspotSnippetsOptions#ProfileAllocationsContext} flag..</li>
- * </ul>
+ * See <a href="BenchmarkDynamicCountersHelp.txt">here</a> for a detailed example of how to use
+ * benchmark counters.
  */
 public class BenchmarkCounters {
 
@@ -94,11 +81,7 @@
         @Option(help = "Turn on the benchmark counters, and displays the results every n milliseconds", type = OptionType.Debug)
         public static final OptionKey<Integer> TimedDynamicCounters = new OptionKey<>(-1);
 
-        @Option(help = "Turn on the benchmark counters, and listen for specific patterns on System.out/System.err:%n" +
-                       "Format: (err|out),start pattern,end pattern (~ matches multiple digits)%n" +
-                       "Examples:%n" +
-                       "  dacapo = 'err, starting =====, PASSED in'%n" +
-                       "  specjvm2008 = 'out,Iteration ~ (~s) begins:,Iteration ~ (~s) ends:'", type = OptionType.Debug)
+        @Option(help = "file:doc-files/BenchmarkDynamicCountersHelp.txt", type = OptionType.Debug)
         public static final OptionKey<String> BenchmarkDynamicCounters = new OptionKey<>(null);
         @Option(help = "Use grouping separators for number printing", type = OptionType.Debug)
         public static final OptionKey<Boolean> DynamicCountersPrintGroupSeparator = new OptionKey<>(true);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/debug/doc-files/BenchmarkDynamicCountersHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,24 @@
+Turn on the benchmark counters, and listen for specific patterns on System.out/System.err.
+The format of this option is:
+
+  (err|out),start pattern,end pattern
+  
+You can use "~" to match 1 or more digits.
+Examples:
+
+  err, starting =====, PASSED in
+  out,Iteration ~ (~s) begins:,Iteration ~ (~s) ends:
+  
+The first pattern matches DaCapo output and the second matches SPECjvm2008 output.
+
+As a more detailed example, here are the options to use for getting statistics
+about allocations within the DaCapo pmd benchmark:
+
+  -XX:JVMCICounterSize=<value> -XX:-JVMCICountersExcludeCompiler \
+  -Dgraal.BenchmarkDynamicCounters="err, starting ====, PASSED in " \
+  -Dgraal.ProfileAllocations=true
+  
+The JVMCICounterSize value depends on the granularity of the profiling -
+10000 should be sufficient. Omit JVMCICountersExcludeCompiler to exclude
+counting allocations on the compiler threads.
+The counters can be further configured by the ProfileAllocationsContext option.
\ No newline at end of file
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/meta/HotSpotSuitesProvider.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/meta/HotSpotSuitesProvider.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,6 +25,7 @@
 import static org.graalvm.compiler.core.common.GraalOptions.GeneratePIC;
 import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode;
 import static org.graalvm.compiler.core.common.GraalOptions.VerifyPhases;
+import static org.graalvm.compiler.core.phases.HighTier.Options.Inline;
 
 import java.util.ListIterator;
 
@@ -98,10 +99,12 @@
                 midTierLowering.add(new ReplaceConstantNodesPhase());
 
                 // Replace inlining policy
-                ListIterator<BasePhase<? super HighTierContext>> iter = ret.getHighTier().findPhase(InliningPhase.class);
-                InliningPhase inlining = (InliningPhase) iter.previous();
-                CanonicalizerPhase canonicalizer = inlining.getCanonicalizer();
-                iter.set(new InliningPhase(new AOTInliningPolicy(null), canonicalizer));
+                if (Inline.getValue(options)) {
+                    ListIterator<BasePhase<? super HighTierContext>> iter = ret.getHighTier().findPhase(InliningPhase.class);
+                    InliningPhase inlining = (InliningPhase) iter.previous();
+                    CanonicalizerPhase canonicalizer = inlining.getCanonicalizer();
+                    iter.set(new InliningPhase(new AOTInliningPolicy(null), canonicalizer));
+                }
             }
         }
 
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/HotspotSnippetsOptions.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/HotspotSnippetsOptions.java	Wed Aug 23 11:24:50 2017 -0700
@@ -51,7 +51,7 @@
     @Option(help = "Enable profiling of allocation sites.", type = OptionType.Debug)
     public static final OptionKey<Boolean> ProfileAllocations = new OptionKey<>(false);
 
-    @Option(help = "Control the naming of the counters when using ProfileAllocations.", type = OptionType.Debug)
+    @Option(help = "file:doc-files/ProfileAllocationsContextHelp.txt", type = OptionType.Debug)
     public static final EnumOptionKey<ProfileContext> ProfileAllocationsContext = new EnumOptionKey<>(ProfileContext.AllocatingMethod);
 
     @Option(help = "Enable profiling of monitor operations.", type = OptionType.Debug)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/doc-files/ProfileAllocationsContextHelp.txt	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,8 @@
+Control the naming and granularity of the counters when using ProfileAllocations.
+The accepted values are:
+        AllocatingMethod - a counter per method
+         InstanceOrArray - one counter for all instance allocations and
+                           one counter for all array allocations 
+           AllocatedType - one counter per allocated type
+  AllocatedTypesInMethod - one counter per allocated type, per method
+ 
\ No newline at end of file
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.java/src/org/graalvm/compiler/java/ComputeLoopFrequenciesClosure.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.java/src/org/graalvm/compiler/java/ComputeLoopFrequenciesClosure.java	Wed Aug 23 11:24:50 2017 -0700
@@ -36,6 +36,8 @@
 import org.graalvm.compiler.phases.graph.ReentrantNodeIterator;
 import org.graalvm.util.EconomicMap;
 
+import static org.graalvm.compiler.nodes.cfg.ControlFlowGraph.multiplyProbabilities;
+
 public final class ComputeLoopFrequenciesClosure extends ReentrantNodeIterator.NodeIteratorClosure<Double> {
 
     private static final ComputeLoopFrequenciesClosure INSTANCE = new ComputeLoopFrequenciesClosure();
@@ -75,32 +77,18 @@
         for (double d : exitStates.getValues()) {
             exitProbability += d;
         }
-        exitProbability = Math.min(1D, exitProbability);
-        if (exitProbability < ControlFlowGraph.MIN_PROBABILITY) {
-            exitProbability = ControlFlowGraph.MIN_PROBABILITY;
-        }
-        assert exitProbability <= 1D && exitProbability >= 0D;
-        double loopFrequency = 1D / exitProbability;
+        exitProbability = Math.min(1.0, exitProbability);
+        exitProbability = Math.max(ControlFlowGraph.MIN_PROBABILITY, exitProbability);
+        double loopFrequency = 1.0 / exitProbability;
         loop.setLoopFrequency(loopFrequency);
 
         double adjustmentFactor = initialState * loopFrequency;
-        exitStates.replaceAll((exitNode, probability) -> multiplySaturate(probability, adjustmentFactor));
+        exitStates.replaceAll((exitNode, probability) -> multiplyProbabilities(probability, adjustmentFactor));
 
         return exitStates;
     }
 
     /**
-     * Multiplies a and b and saturates the result to {@link ControlFlowGraph#MAX_PROBABILITY}.
-     */
-    public static double multiplySaturate(double a, double b) {
-        double r = a * b;
-        if (r > ControlFlowGraph.MAX_PROBABILITY) {
-            return ControlFlowGraph.MAX_PROBABILITY;
-        }
-        return r;
-    }
-
-    /**
      * Computes the frequencies of all loops in the given graph. This is done by performing a
      * reverse postorder iteration and computing the probability of all fixed nodes. The combined
      * probability of all exits of a loop can be used to compute the loop's expected frequency.
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.aarch64/src/org/graalvm/compiler/lir/aarch64/AArch64ArrayEqualsOp.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.aarch64/src/org/graalvm/compiler/lir/aarch64/AArch64ArrayEqualsOp.java	Wed Aug 23 11:24:50 2017 -0700
@@ -68,6 +68,8 @@
 
     public AArch64ArrayEqualsOp(LIRGeneratorTool tool, JavaKind kind, Value result, Value array1, Value array2, Value length) {
         super(TYPE);
+
+        assert !kind.isNumericFloat() : "Float arrays comparison (bitwise_equal || both_NaN) isn't supported";
         this.kind = kind;
 
         Class<?> arrayClass = Array.newInstance(kind.toJavaClass(), 0).getClass();
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64ArrayEqualsOp.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64ArrayEqualsOp.java	Wed Aug 23 11:24:50 2017 -0700
@@ -33,6 +33,8 @@
 import org.graalvm.compiler.asm.amd64.AMD64Address;
 import org.graalvm.compiler.asm.amd64.AMD64Address.Scale;
 import org.graalvm.compiler.asm.amd64.AMD64Assembler.ConditionFlag;
+import org.graalvm.compiler.asm.amd64.AMD64Assembler.OperandSize;
+import org.graalvm.compiler.asm.amd64.AMD64Assembler.SSEOp;
 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
 import org.graalvm.compiler.core.common.LIRKind;
 import org.graalvm.compiler.lir.LIRInstructionClass;
@@ -69,6 +71,10 @@
     @Temp({REG}) protected Value temp2;
     @Temp({REG}) protected Value temp3;
     @Temp({REG}) protected Value temp4;
+
+    @Temp({REG, ILLEGAL}) protected Value temp5;
+    @Temp({REG, ILLEGAL}) protected Value tempXMM;
+
     @Temp({REG, ILLEGAL}) protected Value vectorTemp1;
     @Temp({REG, ILLEGAL}) protected Value vectorTemp2;
 
@@ -91,6 +97,15 @@
         this.temp3 = tool.newVariable(LIRKind.value(tool.target().arch.getWordKind()));
         this.temp4 = tool.newVariable(LIRKind.value(tool.target().arch.getWordKind()));
 
+        this.temp5 = kind.isNumericFloat() ? tool.newVariable(LIRKind.value(tool.target().arch.getWordKind())) : Value.ILLEGAL;
+        if (kind == JavaKind.Float) {
+            this.tempXMM = tool.newVariable(LIRKind.value(AMD64Kind.SINGLE));
+        } else if (kind == JavaKind.Double) {
+            this.tempXMM = tool.newVariable(LIRKind.value(AMD64Kind.DOUBLE));
+        } else {
+            this.tempXMM = Value.ILLEGAL;
+        }
+
         // We only need the vector temporaries if we generate SSE code.
         if (supportsSSE41(tool.target())) {
             this.vectorTemp1 = tool.newVariable(LIRKind.value(AMD64Kind.DOUBLE));
@@ -170,10 +185,14 @@
         Label loop = new Label();
         Label compareTail = new Label();
 
+        boolean requiresNaNCheck = kind.isNumericFloat();
+        Label loopCheck = new Label();
+        Label nanCheck = new Label();
+
         // Compare 16-byte vectors
         masm.andl(result, SSE4_1_VECTOR_SIZE - 1); // tail count (in bytes)
         masm.andl(length, ~(SSE4_1_VECTOR_SIZE - 1)); // vector count (in bytes)
-        masm.jccb(ConditionFlag.Zero, compareTail);
+        masm.jcc(ConditionFlag.Zero, compareTail);
 
         masm.leaq(array1, new AMD64Address(array1, length, Scale.Times1, 0));
         masm.leaq(array2, new AMD64Address(array2, length, Scale.Times1, 0));
@@ -186,13 +205,24 @@
         masm.movdqu(vector2, new AMD64Address(array2, length, Scale.Times1, 0));
         masm.pxor(vector1, vector2);
         masm.ptest(vector1, vector1);
-        masm.jcc(ConditionFlag.NotZero, falseLabel);
+        masm.jcc(ConditionFlag.NotZero, requiresNaNCheck ? nanCheck : falseLabel);
+
+        masm.bind(loopCheck);
         masm.addq(length, SSE4_1_VECTOR_SIZE);
         masm.jcc(ConditionFlag.NotZero, loop);
 
         masm.testl(result, result);
         masm.jcc(ConditionFlag.Zero, trueLabel);
 
+        if (requiresNaNCheck) {
+            Label unalignedCheck = new Label();
+            masm.jmpb(unalignedCheck);
+            masm.bind(nanCheck);
+            emitFloatCompareWithinRange(crb, masm, array1, array2, length, 0, falseLabel, SSE4_1_VECTOR_SIZE);
+            masm.jmpb(loopCheck);
+            masm.bind(unalignedCheck);
+        }
+
         /*
          * Compare the remaining bytes with an unaligned memory load aligned to the end of the
          * array.
@@ -201,7 +231,12 @@
         masm.movdqu(vector2, new AMD64Address(array2, result, Scale.Times1, -SSE4_1_VECTOR_SIZE));
         masm.pxor(vector1, vector2);
         masm.ptest(vector1, vector1);
-        masm.jcc(ConditionFlag.NotZero, falseLabel);
+        if (requiresNaNCheck) {
+            masm.jcc(ConditionFlag.Zero, trueLabel);
+            emitFloatCompareWithinRange(crb, masm, array1, array2, result, -SSE4_1_VECTOR_SIZE, falseLabel, SSE4_1_VECTOR_SIZE);
+        } else {
+            masm.jcc(ConditionFlag.NotZero, falseLabel);
+        }
         masm.jmp(trueLabel);
 
         masm.bind(compareTail);
@@ -233,10 +268,14 @@
         Label loop = new Label();
         Label compareTail = new Label();
 
+        boolean requiresNaNCheck = kind.isNumericFloat();
+        Label loopCheck = new Label();
+        Label nanCheck = new Label();
+
         // Compare 16-byte vectors
         masm.andl(result, AVX_VECTOR_SIZE - 1); // tail count (in bytes)
         masm.andl(length, ~(AVX_VECTOR_SIZE - 1)); // vector count (in bytes)
-        masm.jccb(ConditionFlag.Zero, compareTail);
+        masm.jcc(ConditionFlag.Zero, compareTail);
 
         masm.leaq(array1, new AMD64Address(array1, length, Scale.Times1, 0));
         masm.leaq(array2, new AMD64Address(array2, length, Scale.Times1, 0));
@@ -249,13 +288,24 @@
         masm.vmovdqu(vector2, new AMD64Address(array2, length, Scale.Times1, 0));
         masm.vpxor(vector1, vector1, vector2);
         masm.vptest(vector1, vector1);
-        masm.jcc(ConditionFlag.NotZero, falseLabel);
+        masm.jcc(ConditionFlag.NotZero, requiresNaNCheck ? nanCheck : falseLabel);
+
+        masm.bind(loopCheck);
         masm.addq(length, AVX_VECTOR_SIZE);
         masm.jcc(ConditionFlag.NotZero, loop);
 
         masm.testl(result, result);
         masm.jcc(ConditionFlag.Zero, trueLabel);
 
+        if (requiresNaNCheck) {
+            Label unalignedCheck = new Label();
+            masm.jmpb(unalignedCheck);
+            masm.bind(nanCheck);
+            emitFloatCompareWithinRange(crb, masm, array1, array2, length, 0, falseLabel, AVX_VECTOR_SIZE);
+            masm.jmpb(loopCheck);
+            masm.bind(unalignedCheck);
+        }
+
         /*
          * Compare the remaining bytes with an unaligned memory load aligned to the end of the
          * array.
@@ -264,7 +314,12 @@
         masm.vmovdqu(vector2, new AMD64Address(array2, result, Scale.Times1, -AVX_VECTOR_SIZE));
         masm.vpxor(vector1, vector1, vector2);
         masm.vptest(vector1, vector1);
-        masm.jcc(ConditionFlag.NotZero, falseLabel);
+        if (requiresNaNCheck) {
+            masm.jcc(ConditionFlag.Zero, trueLabel);
+            emitFloatCompareWithinRange(crb, masm, array1, array2, result, -AVX_VECTOR_SIZE, falseLabel, AVX_VECTOR_SIZE);
+        } else {
+            masm.jcc(ConditionFlag.NotZero, falseLabel);
+        }
         masm.jmp(trueLabel);
 
         masm.bind(compareTail);
@@ -283,11 +338,15 @@
         Label loop = new Label();
         Label compareTail = new Label();
 
+        boolean requiresNaNCheck = kind.isNumericFloat();
+        Label loopCheck = new Label();
+        Label nanCheck = new Label();
+
         Register temp = asRegister(temp4);
 
         masm.andl(result, VECTOR_SIZE - 1); // tail count (in bytes)
         masm.andl(length, ~(VECTOR_SIZE - 1));  // vector count (in bytes)
-        masm.jccb(ConditionFlag.Zero, compareTail);
+        masm.jcc(ConditionFlag.Zero, compareTail);
 
         masm.leaq(array1, new AMD64Address(array1, length, Scale.Times1, 0));
         masm.leaq(array2, new AMD64Address(array2, length, Scale.Times1, 0));
@@ -298,12 +357,27 @@
         masm.bind(loop);
         masm.movq(temp, new AMD64Address(array1, length, Scale.Times1, 0));
         masm.cmpq(temp, new AMD64Address(array2, length, Scale.Times1, 0));
-        masm.jccb(ConditionFlag.NotEqual, falseLabel);
+        masm.jcc(ConditionFlag.NotEqual, requiresNaNCheck ? nanCheck : falseLabel);
+
+        masm.bind(loopCheck);
         masm.addq(length, VECTOR_SIZE);
         masm.jccb(ConditionFlag.NotZero, loop);
 
         masm.testl(result, result);
-        masm.jccb(ConditionFlag.Zero, trueLabel);
+        masm.jcc(ConditionFlag.Zero, trueLabel);
+
+        if (requiresNaNCheck) {
+            // NaN check is slow path and hence placed outside of the main loop.
+            Label unalignedCheck = new Label();
+            masm.jmpb(unalignedCheck);
+            masm.bind(nanCheck);
+            // At most two iterations, unroll in the emitted code.
+            for (int offset = 0; offset < VECTOR_SIZE; offset += kind.getByteCount()) {
+                emitFloatCompare(masm, array1, array2, length, offset, falseLabel, kind.getByteCount() == VECTOR_SIZE);
+            }
+            masm.jmpb(loopCheck);
+            masm.bind(unalignedCheck);
+        }
 
         /*
          * Compare the remaining bytes with an unaligned memory load aligned to the end of the
@@ -311,7 +385,15 @@
          */
         masm.movq(temp, new AMD64Address(array1, result, Scale.Times1, -VECTOR_SIZE));
         masm.cmpq(temp, new AMD64Address(array2, result, Scale.Times1, -VECTOR_SIZE));
-        masm.jccb(ConditionFlag.NotEqual, falseLabel);
+        if (requiresNaNCheck) {
+            masm.jcc(ConditionFlag.Equal, trueLabel);
+            // At most two iterations, unroll in the emitted code.
+            for (int offset = 0; offset < VECTOR_SIZE; offset += kind.getByteCount()) {
+                emitFloatCompare(masm, array1, array2, result, -VECTOR_SIZE + offset, falseLabel, kind.getByteCount() == VECTOR_SIZE);
+            }
+        } else {
+            masm.jccb(ConditionFlag.NotEqual, falseLabel);
+        }
         masm.jmpb(trueLabel);
 
         masm.bind(compareTail);
@@ -333,8 +415,13 @@
             masm.jccb(ConditionFlag.Zero, compare2Bytes);
             masm.movl(temp, new AMD64Address(array1, 0));
             masm.cmpl(temp, new AMD64Address(array2, 0));
-            masm.jccb(ConditionFlag.NotEqual, falseLabel);
-
+            if (kind == JavaKind.Float) {
+                masm.jccb(ConditionFlag.Equal, trueLabel);
+                emitFloatCompare(masm, array1, array2, Register.None, 0, falseLabel, true);
+                masm.jmpb(trueLabel);
+            } else {
+                masm.jccb(ConditionFlag.NotEqual, falseLabel);
+            }
             if (kind.getByteCount() <= 2) {
                 // Move array pointers forward.
                 masm.leaq(array1, new AMD64Address(array1, 4));
@@ -372,6 +459,71 @@
         }
     }
 
+    /**
+     * Emits code to fall through if {@code src} is NaN, otherwise jump to {@code branchOrdered}.
+     */
+    private void emitNaNCheck(AMD64MacroAssembler masm, AMD64Address src, Label branchIfNonNaN) {
+        assert kind.isNumericFloat();
+        Register tempXMMReg = asRegister(tempXMM);
+        if (kind == JavaKind.Float) {
+            masm.movflt(tempXMMReg, src);
+        } else {
+            masm.movdbl(tempXMMReg, src);
+        }
+        SSEOp.UCOMIS.emit(masm, kind == JavaKind.Float ? OperandSize.PS : OperandSize.PD, tempXMMReg, tempXMMReg);
+        masm.jcc(ConditionFlag.NoParity, branchIfNonNaN);
+    }
+
+    /**
+     * Emits code to compare if two floats are bitwise equal or both NaN.
+     */
+    private void emitFloatCompare(AMD64MacroAssembler masm, Register base1, Register base2, Register index, int offset, Label falseLabel, boolean skipBitwiseCompare) {
+        AMD64Address address1 = new AMD64Address(base1, index, Scale.Times1, offset);
+        AMD64Address address2 = new AMD64Address(base2, index, Scale.Times1, offset);
+
+        Label bitwiseEqual = new Label();
+
+        if (!skipBitwiseCompare) {
+            // Bitwise compare
+            Register temp = asRegister(temp4);
+
+            if (kind == JavaKind.Float) {
+                masm.movl(temp, address1);
+                masm.cmpl(temp, address2);
+            } else {
+                masm.movq(temp, address1);
+                masm.cmpq(temp, address2);
+            }
+            masm.jccb(ConditionFlag.Equal, bitwiseEqual);
+        }
+
+        emitNaNCheck(masm, address1, falseLabel);
+        emitNaNCheck(masm, address2, falseLabel);
+
+        masm.bind(bitwiseEqual);
+    }
+
+    /**
+     * Emits code to compare float equality within a range.
+     */
+    private void emitFloatCompareWithinRange(CompilationResultBuilder crb, AMD64MacroAssembler masm, Register base1, Register base2, Register index, int offset, Label falseLabel, int range) {
+        assert kind.isNumericFloat();
+        Label loop = new Label();
+        Register i = asRegister(temp5);
+
+        masm.movq(i, range);
+        masm.negq(i);
+        // Align the main loop
+        masm.align(crb.target.wordSize * 2);
+        masm.bind(loop);
+        emitFloatCompare(masm, base1, base2, index, offset, falseLabel, kind.getByteCount() == range);
+        masm.addq(index, kind.getByteCount());
+        masm.addq(i, kind.getByteCount());
+        masm.jccb(ConditionFlag.NotZero, loop);
+        // Floats within the range are equal, revert change to the register index
+        masm.subq(index, range);
+    }
+
     private static final Unsafe UNSAFE = initUnsafe();
 
     private static Unsafe initUnsafe() {
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.sparc/src/org/graalvm/compiler/lir/sparc/SPARCArrayEqualsOp.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.sparc/src/org/graalvm/compiler/lir/sparc/SPARCArrayEqualsOp.java	Wed Aug 23 11:24:50 2017 -0700
@@ -78,6 +78,8 @@
 
     public SPARCArrayEqualsOp(LIRGeneratorTool tool, JavaKind kind, AllocatableValue result, AllocatableValue array1, AllocatableValue array2, AllocatableValue length) {
         super(TYPE, SIZE);
+
+        assert !kind.isNumericFloat() : "Float arrays comparison (bitwise_equal || both_NaN) isn't supported";
         this.kind = kind;
 
         Class<?> arrayClass = Array.newInstance(kind.toJavaClass(), 0).getClass();
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java	Wed Aug 23 11:24:50 2017 -0700
@@ -59,7 +59,7 @@
         if (isNumericInteger(a.getPlatformKind())) {
             LIRKind aKind = a.getValueKind(LIRKind.class);
             LIRKind bKind = b.getValueKind(LIRKind.class);
-            assert a.getPlatformKind() == b.getPlatformKind();
+            assert a.getPlatformKind() == b.getPlatformKind() : a.getPlatformKind() + " vs. " + b.getPlatformKind();
 
             if (aKind.isUnknownReference()) {
                 resultKind = aKind;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopPartialUnrollPhase.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopPartialUnrollPhase.java	Wed Aug 23 11:24:50 2017 -0700
@@ -51,6 +51,8 @@
                 try (Graph.NodeEventScope nes = graph.trackNodeEvents(listener)) {
                     LoopsData dataCounted = new LoopsData(graph);
                     dataCounted.detectedCountedLoops();
+                    Graph.Mark mark = graph.getMark();
+                    boolean prePostInserted = false;
                     for (LoopEx loop : dataCounted.countedLoops()) {
                         if (!LoopTransformations.isUnrollableLoop(loop)) {
                             continue;
@@ -59,9 +61,10 @@
                             if (loop.loopBegin().isSimpleLoop()) {
                                 // First perform the pre/post transformation and do the partial
                                 // unroll when we come around again.
-                                LoopTransformations.insertPrePostLoops(loop, graph);
+                                LoopTransformations.insertPrePostLoops(loop);
+                                prePostInserted = true;
                             } else {
-                                LoopTransformations.partialUnroll(loop, graph);
+                                LoopTransformations.partialUnroll(loop);
                             }
                             changed = true;
                         }
@@ -72,11 +75,25 @@
                         canonicalizer.applyIncremental(graph, context, listener.getNodes());
                         listener.getNodes().clear();
                     }
+
+                    assert !prePostInserted || checkCounted(graph, mark);
                 }
             }
         }
     }
 
+    private static boolean checkCounted(StructuredGraph graph, Graph.Mark mark) {
+        LoopsData dataCounted;
+        dataCounted = new LoopsData(graph);
+        dataCounted.detectedCountedLoops();
+        for (LoopEx anyLoop : dataCounted.loops()) {
+            if (graph.isNew(mark, anyLoop.loopBegin())) {
+                assert anyLoop.isCounted() : "pre/post transformation loses counted loop " + anyLoop.loopBegin();
+            }
+        }
+        return true;
+    }
+
     @Override
     public boolean checkContract() {
         return false;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopTransformations.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopTransformations.java	Wed Aug 23 11:24:50 2017 -0700
@@ -31,6 +31,7 @@
 import java.util.List;
 
 import org.graalvm.compiler.core.common.RetryableBailoutException;
+import org.graalvm.compiler.core.common.calc.Condition;
 import org.graalvm.compiler.debug.DebugContext;
 import org.graalvm.compiler.debug.GraalError;
 import org.graalvm.compiler.graph.Graph.Mark;
@@ -145,9 +146,9 @@
         // TODO (gd) probabilities need some amount of fixup.. (probably also in other transforms)
     }
 
-    public static void partialUnroll(LoopEx loop, StructuredGraph graph) {
+    public static void partialUnroll(LoopEx loop) {
         assert loop.loopBegin().isMainLoop();
-        graph.getDebug().log("LoopPartialUnroll %s", loop);
+        loop.loopBegin().graph().getDebug().log("LoopPartialUnroll %s", loop);
 
         LoopFragmentInside newSegment = loop.inside().duplicate();
         newSegment.insertWithinAfter(loop);
@@ -222,72 +223,73 @@
     // The pre loop is constrained to one iteration for now and will likely
     // be updated to produce vector alignment if applicable.
 
-    public static void insertPrePostLoops(LoopEx loop, StructuredGraph graph) {
+    public static LoopBeginNode insertPrePostLoops(LoopEx loop) {
+        StructuredGraph graph = loop.loopBegin().graph();
         graph.getDebug().log("LoopTransformations.insertPrePostLoops %s", loop);
         LoopFragmentWhole preLoop = loop.whole();
         CountedLoopInfo preCounted = loop.counted();
         IfNode preLimit = preCounted.getLimitTest();
-        if (preLimit != null) {
-            LoopBeginNode preLoopBegin = loop.loopBegin();
-            InductionVariable preIv = preCounted.getCounter();
-            LoopExitNode preLoopExitNode = preLoopBegin.getSingleLoopExit();
-            FixedNode continuationNode = preLoopExitNode.next();
+        assert preLimit != null;
+        LoopBeginNode preLoopBegin = loop.loopBegin();
+        InductionVariable preIv = preCounted.getCounter();
+        LoopExitNode preLoopExitNode = preLoopBegin.getSingleLoopExit();
+        FixedNode continuationNode = preLoopExitNode.next();
 
-            // Each duplication is inserted after the original, ergo create the post loop first
-            LoopFragmentWhole mainLoop = preLoop.duplicate();
-            LoopFragmentWhole postLoop = preLoop.duplicate();
-            preLoopBegin.incrementSplits();
-            preLoopBegin.incrementSplits();
-            preLoopBegin.setPreLoop();
-            graph.getDebug().dump(DebugContext.VERBOSE_LEVEL, graph, "After duplication");
-            LoopBeginNode mainLoopBegin = mainLoop.getDuplicatedNode(preLoopBegin);
-            mainLoopBegin.setMainLoop();
-            LoopBeginNode postLoopBegin = postLoop.getDuplicatedNode(preLoopBegin);
-            postLoopBegin.setPostLoop();
+        // Each duplication is inserted after the original, ergo create the post loop first
+        LoopFragmentWhole mainLoop = preLoop.duplicate();
+        LoopFragmentWhole postLoop = preLoop.duplicate();
+        preLoopBegin.incrementSplits();
+        preLoopBegin.incrementSplits();
+        preLoopBegin.setPreLoop();
+        graph.getDebug().dump(DebugContext.VERBOSE_LEVEL, graph, "After duplication");
+        LoopBeginNode mainLoopBegin = mainLoop.getDuplicatedNode(preLoopBegin);
+        mainLoopBegin.setMainLoop();
+        LoopBeginNode postLoopBegin = postLoop.getDuplicatedNode(preLoopBegin);
+        postLoopBegin.setPostLoop();
 
-            EndNode postEndNode = getBlockEndAfterLoopExit(postLoopBegin);
-            AbstractMergeNode postMergeNode = postEndNode.merge();
-            LoopExitNode postLoopExitNode = postLoopBegin.getSingleLoopExit();
+        EndNode postEndNode = getBlockEndAfterLoopExit(postLoopBegin);
+        AbstractMergeNode postMergeNode = postEndNode.merge();
+        LoopExitNode postLoopExitNode = postLoopBegin.getSingleLoopExit();
 
-            // Update the main loop phi initialization to carry from the pre loop
-            for (PhiNode prePhiNode : preLoopBegin.phis()) {
-                PhiNode mainPhiNode = mainLoop.getDuplicatedNode(prePhiNode);
-                mainPhiNode.setValueAt(0, prePhiNode);
-            }
+        // Update the main loop phi initialization to carry from the pre loop
+        for (PhiNode prePhiNode : preLoopBegin.phis()) {
+            PhiNode mainPhiNode = mainLoop.getDuplicatedNode(prePhiNode);
+            mainPhiNode.setValueAt(0, prePhiNode);
+        }
 
-            EndNode mainEndNode = getBlockEndAfterLoopExit(mainLoopBegin);
-            AbstractMergeNode mainMergeNode = mainEndNode.merge();
-            AbstractEndNode postEntryNode = postLoopBegin.forwardEnd();
+        EndNode mainEndNode = getBlockEndAfterLoopExit(mainLoopBegin);
+        AbstractMergeNode mainMergeNode = mainEndNode.merge();
+        AbstractEndNode postEntryNode = postLoopBegin.forwardEnd();
 
-            // In the case of no Bounds tests, we just flow right into the main loop
-            AbstractBeginNode mainLandingNode = BeginNode.begin(postEntryNode);
-            LoopExitNode mainLoopExitNode = mainLoopBegin.getSingleLoopExit();
-            mainLoopExitNode.setNext(mainLandingNode);
-            preLoopExitNode.setNext(mainLoopBegin.forwardEnd());
+        // In the case of no Bounds tests, we just flow right into the main loop
+        AbstractBeginNode mainLandingNode = BeginNode.begin(postEntryNode);
+        LoopExitNode mainLoopExitNode = mainLoopBegin.getSingleLoopExit();
+        mainLoopExitNode.setNext(mainLandingNode);
+        preLoopExitNode.setNext(mainLoopBegin.forwardEnd());
 
-            // Add and update any phi edges as per merge usage as needed and update usages
-            processPreLoopPhis(loop, mainLoop, postLoop);
-            continuationNode.predecessor().clearSuccessors();
-            postLoopExitNode.setNext(continuationNode);
-            cleanupMerge(postMergeNode, postLoopExitNode);
-            cleanupMerge(mainMergeNode, mainLandingNode);
+        // Add and update any phi edges as per merge usage as needed and update usages
+        processPreLoopPhis(loop, mainLoop, postLoop);
+        continuationNode.predecessor().clearSuccessors();
+        postLoopExitNode.setNext(continuationNode);
+        cleanupMerge(postMergeNode, postLoopExitNode);
+        cleanupMerge(mainMergeNode, mainLandingNode);
 
-            // Change the preLoop to execute one iteration for now
-            updateMainLoopLimit(preLimit, preIv, mainLoop);
-            updatePreLoopLimit(preLimit, preIv, preCounted);
-            preLoopBegin.setLoopFrequency(1);
-            mainLoopBegin.setLoopFrequency(Math.max(0.0, mainLoopBegin.loopFrequency() - 2));
-            postLoopBegin.setLoopFrequency(Math.max(0.0, postLoopBegin.loopFrequency() - 1));
+        // Change the preLoop to execute one iteration for now
+        updateMainLoopLimit(preLimit, preIv, mainLoop);
+        updatePreLoopLimit(preLimit, preIv, preCounted);
+        preLoopBegin.setLoopFrequency(1);
+        mainLoopBegin.setLoopFrequency(Math.max(0.0, mainLoopBegin.loopFrequency() - 2));
+        postLoopBegin.setLoopFrequency(Math.max(0.0, postLoopBegin.loopFrequency() - 1));
 
-            // The pre and post loops don't require safepoints at all
-            for (SafepointNode safepoint : preLoop.nodes().filter(SafepointNode.class)) {
-                graph.removeFixed(safepoint);
-            }
-            for (SafepointNode safepoint : postLoop.nodes().filter(SafepointNode.class)) {
-                graph.removeFixed(safepoint);
-            }
+        // The pre and post loops don't require safepoints at all
+        for (SafepointNode safepoint : preLoop.nodes().filter(SafepointNode.class)) {
+            graph.removeFixed(safepoint);
+        }
+        for (SafepointNode safepoint : postLoop.nodes().filter(SafepointNode.class)) {
+            graph.removeFixed(safepoint);
         }
         graph.getDebug().dump(DebugContext.DETAILED_LEVEL, graph, "InsertPrePostLoops %s", loop);
+        return mainLoopBegin;
     }
 
     /**
@@ -373,7 +375,7 @@
             throw GraalError.shouldNotReachHere();
         }
 
-        // Preloop always performs at least once iteration, so remove that from the main loop.
+        // Preloop always performs at least one iteration, so remove that from the main loop.
         ValueNode newLimit = sub(graph, ub, mainStride);
 
         // Re-wire the condition with the new limit
@@ -445,6 +447,14 @@
             return false;
         }
         LoopBeginNode loopBegin = loop.loopBegin();
+        LogicNode condition = loop.counted().getLimitTest().condition();
+        if (!(condition instanceof CompareNode)) {
+            return false;
+        }
+        if (((CompareNode) condition).condition() == Condition.EQ || ((CompareNode) condition).condition() == Condition.NE) {
+            condition.getDebug().log(DebugContext.VERBOSE_LEVEL, "isUnrollableLoop %s condition unsupported %s ", loopBegin, ((CompareNode) condition).condition());
+            return false;
+        }
         if (loopBegin.isMainLoop() || loopBegin.isSimpleLoop()) {
             // Flow-less loops to partial unroll for now. 3 blocks corresponds to an if that either
             // exits or continues the loop. There might be fixed and floating work within the loop
@@ -452,6 +462,7 @@
             if (loop.loop().getBlocks().size() < 3) {
                 return true;
             }
+            condition.getDebug().log(DebugContext.VERBOSE_LEVEL, "isUnrollableLoop %s too large to unroll %s ", loopBegin, loop.loop().getBlocks().size());
         }
         return false;
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.test/src/org/graalvm/compiler/loop/test/LoopPartialUnrollTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.test/src/org/graalvm/compiler/loop/test/LoopPartialUnrollTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -22,12 +22,41 @@
  */
 package org.graalvm.compiler.loop.test;
 
+import java.util.ListIterator;
+
+import org.graalvm.compiler.core.common.CompilationIdentifier;
 import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.debug.DebugContext;
 import org.graalvm.compiler.graph.iterators.NodeIterable;
+import org.graalvm.compiler.java.ComputeLoopFrequenciesClosure;
+import org.graalvm.compiler.loop.DefaultLoopPolicies;
+import org.graalvm.compiler.loop.LoopEx;
+import org.graalvm.compiler.loop.LoopFragmentInside;
+import org.graalvm.compiler.loop.LoopsData;
+import org.graalvm.compiler.loop.phases.LoopPartialUnrollPhase;
 import org.graalvm.compiler.nodes.LoopBeginNode;
 import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.options.OptionValues;
+import org.graalvm.compiler.phases.BasePhase;
+import org.graalvm.compiler.phases.OptimisticOptimizations;
+import org.graalvm.compiler.phases.PhaseSuite;
+import org.graalvm.compiler.phases.common.CanonicalizerPhase;
+import org.graalvm.compiler.phases.common.ConditionalEliminationPhase;
+import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase;
+import org.graalvm.compiler.phases.common.DeoptimizationGroupingPhase;
+import org.graalvm.compiler.phases.common.FloatingReadPhase;
+import org.graalvm.compiler.phases.common.FrameStateAssignmentPhase;
+import org.graalvm.compiler.phases.common.GuardLoweringPhase;
+import org.graalvm.compiler.phases.common.LoweringPhase;
+import org.graalvm.compiler.phases.common.RemoveValueProxyPhase;
+import org.graalvm.compiler.phases.tiers.MidTierContext;
+import org.graalvm.compiler.phases.tiers.Suites;
+import org.junit.Ignore;
 import org.junit.Test;
 
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
 public class LoopPartialUnrollTest extends GraalCompilerTest {
 
     @Override
@@ -41,100 +70,72 @@
         return false;
     }
 
-    public static long testMultiplySnippet(int arg) {
-        long r = 1;
-        for (int i = 0; branchProbability(0.99, i < arg); i++) {
-            r += r * i;
+    public static long sumWithEqualityLimit(int[] text) {
+        long sum = 0;
+        for (int i = 0; branchProbability(0.99, i != text.length); ++i) {
+            sum += volatileInt;
         }
-        return r;
+        return sum;
     }
 
+    @Ignore("equality limits aren't working properly")
     @Test
-    public void testMultiply() {
-        test("testMultiplySnippet", 9);
-    }
-
-    public static int testNestedSumSnippet(int d) {
-        int c = 0;
-        for (int i = 0; i < d; i++) {
-            for (int j = 0; branchProbability(0.99, j < i); j++) {
-                c += c + j & 0x3;
-            }
-        }
-        return c;
-    }
-
-    @Test
-    public void testNestedSumBy2() {
-        for (int i = 0; i < 1000; i++) {
-            test("testNestedSumBy2Snippet", i);
-        }
-    }
-
-    public static int testNestedSumBy2Snippet(int d) {
-        int c = 0;
-        for (int i = 0; i < d; i++) {
-            for (int j = 0; branchProbability(0.99, j < i); j += 2) {
-                c += c + j & 0x3;
-            }
-        }
-        return c;
-    }
-
-    @Test
-    public void testNestedSum() {
-        for (int i = 0; i < 1000; i++) {
-            test("testNestedSumSnippet", i);
-        }
-    }
-
-    public static int testSumDownSnippet(int d) {
-        int c = 0;
-        for (int j = d; branchProbability(0.99, j > -4); j--) {
-            c += c + j & 0x3;
-        }
-        return c;
-    }
-
-    @Test
-    public void testSumDown() {
-        test("testSumDownSnippet", 1);
-        for (int i = 0; i < 160; i++) {
-            test("testSumDownSnippet", i);
-        }
-    }
-
-    public static int testSumDownBy2Snippet(int d) {
-        int c = 0;
-        for (int j = d; branchProbability(0.99, j > -4); j -= 2) {
-            c += c + j & 0x3;
-        }
-        return c;
-    }
-
-    @Test
-    public void testSumDownBy2() {
-        test("testSumDownBy2Snippet", 1);
-        for (int i = 0; i < 160; i++) {
-            test("testSumDownBy2Snippet", i);
+    public void testSumWithEqualityLimit() {
+        for (int i = 0; i < 128; i++) {
+            int[] data = new int[i];
+            test("sumWithEqualityLimit", data);
         }
     }
 
     @Test
     public void testLoopCarried() {
-        test("testLoopCarriedSnippet", 1, 2);
-        test("testLoopCarriedSnippet", 0, 4);
-        test("testLoopCarriedSnippet", 4, 0);
+        for (int i = 0; i < 64; i++) {
+            test("testLoopCarriedSnippet", i);
+        }
     }
 
-    public static int testLoopCarriedSnippet(int a, int b) {
-        int c = a;
-        int d = b;
-        for (int j = 0; branchProbability(0.99, j < a); j++) {
-            d = c;
-            c += 1;
+    @Test
+    public void testLoopCarriedDuplication() {
+        testDuplicateBody("testLoopCarriedReference", "testLoopCarriedSnippet");
+    }
+
+    static volatile int volatileInt = 3;
+
+    public int testLoopCarriedSnippet(int iterations) {
+        int a = 0;
+        int b = 0;
+        int c = 0;
+
+        for (int i = 0; branchProbability(0.99, i < iterations); i++) {
+            int t1 = volatileInt;
+            int t2 = a + b;
+            c = b;
+            b = a;
+            a = t1 + t2;
         }
-        return c + d;
+
+        return c;
+    }
+
+    public int testLoopCarriedReference(int iterations) {
+        int a = 0;
+        int b = 0;
+        int c = 0;
+
+        for (int i = 0; branchProbability(0.99, i < iterations); i += 2) {
+            int t1 = volatileInt;
+            int t2 = a + b;
+            c = b;
+            b = a;
+            a = t1 + t2;
+            t1 = volatileInt;
+            t2 = a + b;
+            c = b;
+            b = a;
+            a = t1 + t2;
+        }
+
+        return c;
     }
 
     public static long init = Runtime.getRuntime().totalMemory();
@@ -181,4 +182,82 @@
     public void testSignExtension() {
         test("testSignExtensionSnippet", 9L);
     }
+
+    @Override
+    protected Suites createSuites(OptionValues opts) {
+        Suites suites = super.createSuites(opts).copy();
+        PhaseSuite<MidTierContext> mid = suites.getMidTier();
+        ListIterator<BasePhase<? super MidTierContext>> iter = mid.findPhase(LoopPartialUnrollPhase.class);
+        BasePhase<? super MidTierContext> partialUnoll = iter.previous();
+        if (iter.previous().getClass() != FrameStateAssignmentPhase.class) {
+            // Ensure LoopPartialUnrollPhase runs immediately after FrameStateAssignment, so it gets
+            // priority over other optimizations in these tests.
+            mid.findPhase(LoopPartialUnrollPhase.class).remove();
+            ListIterator<BasePhase<? super MidTierContext>> fsa = mid.findPhase(FrameStateAssignmentPhase.class);
+            fsa.add(partialUnoll);
+        }
+        return suites;
+    }
+
+    public void testGraph(String reference, String test) {
+        StructuredGraph referenceGraph = buildGraph(reference, false);
+        StructuredGraph testGraph = buildGraph(test, true);
+        assertEquals(referenceGraph, testGraph, false, false);
+    }
+
+    @SuppressWarnings("try")
+    public StructuredGraph buildGraph(String name, boolean partialUnroll) {
+        CompilationIdentifier id = new CompilationIdentifier() {
+            @Override
+            public String toString(Verbosity verbosity) {
+                return name;
+            }
+        };
+        ResolvedJavaMethod method = getResolvedJavaMethod(name);
+        OptionValues options = new OptionValues(getInitialOptions(), DefaultLoopPolicies.UnrollMaxIterations, 2);
+        StructuredGraph graph = parse(builder(method, StructuredGraph.AllowAssumptions.YES, id, options), getEagerGraphBuilderSuite());
+        try (DebugContext.Scope buildScope = graph.getDebug().scope(name, method, graph)) {
+            MidTierContext context = new MidTierContext(getProviders(), getTargetProvider(), OptimisticOptimizations.ALL, null);
+
+            CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
+            canonicalizer.apply(graph, context);
+            new RemoveValueProxyPhase().apply(graph);
+            new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
+            new FloatingReadPhase().apply(graph);
+            new DeadCodeEliminationPhase().apply(graph);
+            new ConditionalEliminationPhase(true).apply(graph, context);
+            ComputeLoopFrequenciesClosure.compute(graph);
+            new GuardLoweringPhase().apply(graph, context);
+            new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.MID_TIER).apply(graph, context);
+            new FrameStateAssignmentPhase().apply(graph);
+            new DeoptimizationGroupingPhase().apply(graph, context);
+            canonicalizer.apply(graph, context);
+            new ConditionalEliminationPhase(true).apply(graph, context);
+            if (partialUnroll) {
+                LoopsData dataCounted = new LoopsData(graph);
+                dataCounted.detectedCountedLoops();
+                for (LoopEx loop : dataCounted.countedLoops()) {
+                    LoopFragmentInside newSegment = loop.inside().duplicate();
+                    newSegment.insertWithinAfter(loop, false);
+                }
+                canonicalizer.apply(graph, getDefaultMidTierContext());
+            }
+            new DeadCodeEliminationPhase().apply(graph);
+            canonicalizer.apply(graph, context);
+            graph.getDebug().dump(DebugContext.BASIC_LEVEL, graph, "before compare");
+            return graph;
+        } catch (Throwable e) {
+            throw getDebugContext().handle(e);
+        }
+    }
+
+    public void testDuplicateBody(String reference, String test) {
+
+        StructuredGraph referenceGraph = buildGraph(reference, false);
+        StructuredGraph testGraph = buildGraph(test, true);
+        CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
+        canonicalizer.apply(testGraph, getDefaultMidTierContext());
+        canonicalizer.apply(referenceGraph, getDefaultMidTierContext());
+        assertEquals(referenceGraph, testGraph);
+    }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/DefaultLoopPolicies.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/DefaultLoopPolicies.java	Wed Aug 23 11:24:50 2017 -0700
@@ -100,11 +100,12 @@
 
     @Override
     public boolean shouldPartiallyUnroll(LoopEx loop) {
+        LoopBeginNode loopBegin = loop.loopBegin();
         if (!loop.isCounted()) {
+            loopBegin.getDebug().log(DebugContext.VERBOSE_LEVEL, "shouldPartiallyUnroll %s isn't counted", loopBegin);
             return false;
         }
         OptionValues options = loop.entryPoint().getOptions();
-        LoopBeginNode loopBegin = loop.loopBegin();
         int maxNodes = ExactPartialUnrollMaxNodes.getValue(options);
         maxNodes = Math.min(maxNodes, Math.max(0, MaximumDesiredSize.getValue(options) - loop.loopBegin().graph().getNodeCount()));
         int size = Math.max(1, loop.size() - 1 - loop.loopBegin().phis().count());
@@ -112,6 +113,7 @@
         if (unrollFactor == 1) {
             double loopFrequency = loopBegin.loopFrequency();
             if (loopBegin.isSimpleLoop() && loopFrequency < 5.0) {
+                loopBegin.getDebug().log(DebugContext.VERBOSE_LEVEL, "shouldPartiallyUnroll %s frequency too low %s ", loopBegin, loopFrequency);
                 return false;
             }
             loopBegin.setLoopOrigFrequency(loopFrequency);
@@ -136,6 +138,7 @@
             }
             return true;
         } else {
+            loopBegin.getDebug().log(DebugContext.VERBOSE_LEVEL, "shouldPartiallyUnroll %s unrolled loop is too large %s ", loopBegin, size);
             return false;
         }
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/LoopFragmentInside.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop/src/org/graalvm/compiler/loop/LoopFragmentInside.java	Wed Aug 23 11:24:50 2017 -0700
@@ -22,6 +22,7 @@
  */
 package org.graalvm.compiler.loop;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -142,18 +143,49 @@
         end.setNext(loop.entryPoint());
     }
 
+    /**
+     * Duplicate the body within the loop after the current copy copy of the body, updating the
+     * iteration limit to account for the duplication.
+     *
+     * @param loop
+     */
     public void insertWithinAfter(LoopEx loop) {
+        insertWithinAfter(loop, true);
+    }
+
+    /**
+     * Duplicate the body within the loop after the current copy copy of the body.
+     *
+     * @param loop
+     * @param updateLimit true if the iteration limit should be adjusted.
+     */
+    public void insertWithinAfter(LoopEx loop, boolean updateLimit) {
         assert isDuplicate() && original().loop() == loop;
 
         patchNodes(dataFixWithinAfter);
 
+        /*
+         * Collect any new back edges values before updating them since they might reference each
+         * other.
+         */
         LoopBeginNode mainLoopBegin = loop.loopBegin();
+        ArrayList<ValueNode> backedgeValues = new ArrayList<>();
         for (PhiNode mainPhiNode : mainLoopBegin.phis()) {
             ValueNode duplicatedNode = getDuplicatedNode(mainPhiNode.valueAt(1));
+            if (duplicatedNode == null) {
+                if (mainLoopBegin.isPhiAtMerge(mainPhiNode.valueAt(1))) {
+                    duplicatedNode = ((PhiNode) (mainPhiNode.valueAt(1))).valueAt(1);
+                } else {
+                    assert mainPhiNode.valueAt(1).isConstant() : mainPhiNode.valueAt(1);
+                }
+            }
+            backedgeValues.add(duplicatedNode);
+        }
+        int index = 0;
+        for (PhiNode mainPhiNode : mainLoopBegin.phis()) {
+            ValueNode duplicatedNode = backedgeValues.get(index++);
             if (duplicatedNode != null) {
                 mainPhiNode.setValueAt(1, duplicatedNode);
-            } else {
-                assert mainPhiNode.valueAt(1).isConstant() || mainLoopBegin.isPhiAtMerge(mainPhiNode.valueAt(1)) : mainPhiNode.valueAt(1);
             }
         }
 
@@ -166,27 +198,29 @@
         }
 
         int unrollFactor = mainLoopBegin.getUnrollFactor();
-
-        // Now use the previous unrollFactor to update the exit condition to power of two
         StructuredGraph graph = mainLoopBegin.graph();
-        InductionVariable iv = loop.counted().getCounter();
-        CompareNode compareNode = (CompareNode) loop.counted().getLimitTest().condition();
-        ValueNode compareBound;
-        if (compareNode.getX() == iv.valueNode()) {
-            compareBound = compareNode.getY();
-        } else if (compareNode.getY() == iv.valueNode()) {
-            compareBound = compareNode.getX();
-        } else {
-            throw GraalError.shouldNotReachHere();
-        }
-        if (iv.direction() == InductionVariable.Direction.Up) {
-            ConstantNode aboveVal = graph.unique(ConstantNode.forIntegerStamp(iv.initNode().stamp(), unrollFactor * iv.constantStride()));
-            ValueNode newLimit = graph.addWithoutUnique(new SubNode(compareBound, aboveVal));
-            compareNode.replaceFirstInput(compareBound, newLimit);
-        } else if (iv.direction() == InductionVariable.Direction.Down) {
-            ConstantNode aboveVal = graph.unique(ConstantNode.forIntegerStamp(iv.initNode().stamp(), unrollFactor * -iv.constantStride()));
-            ValueNode newLimit = graph.addWithoutUnique(new AddNode(compareBound, aboveVal));
-            compareNode.replaceFirstInput(compareBound, newLimit);
+        if (updateLimit) {
+            // Now use the previous unrollFactor to update the exit condition to power of two
+            InductionVariable iv = loop.counted().getCounter();
+            CompareNode compareNode = (CompareNode) loop.counted().getLimitTest().condition();
+            ValueNode compareBound;
+            if (compareNode.getX() == iv.valueNode()) {
+                compareBound = compareNode.getY();
+            } else if (compareNode.getY() == iv.valueNode()) {
+                compareBound = compareNode.getX();
+            } else {
+                throw GraalError.shouldNotReachHere();
+            }
+            long originalStride = unrollFactor == 1 ? iv.constantStride() : iv.constantStride() / unrollFactor;
+            if (iv.direction() == InductionVariable.Direction.Up) {
+                ConstantNode aboveVal = graph.unique(ConstantNode.forIntegerStamp(iv.initNode().stamp(), unrollFactor * originalStride));
+                ValueNode newLimit = graph.addWithoutUnique(new SubNode(compareBound, aboveVal));
+                compareNode.replaceFirstInput(compareBound, newLimit);
+            } else if (iv.direction() == InductionVariable.Direction.Down) {
+                ConstantNode aboveVal = graph.unique(ConstantNode.forIntegerStamp(iv.initNode().stamp(), unrollFactor * -originalStride));
+                ValueNode newLimit = graph.addWithoutUnique(new AddNode(compareBound, aboveVal));
+                compareNode.replaceFirstInput(compareBound, newLimit);
+            }
         }
         mainLoopBegin.setUnrollFactor(unrollFactor * 2);
         mainLoopBegin.setLoopFrequency(mainLoopBegin.loopFrequency() / 2);
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/org/graalvm/compiler/microbenchmarks/graal/TestJMH.java	Wed Aug 23 15:47:41 2017 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,43 +0,0 @@
-/*
- * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package org.graalvm.compiler.microbenchmarks.graal;
-
-import org.openjdk.jmh.annotations.Benchmark;
-import org.openjdk.jmh.annotations.Fork;
-import org.openjdk.jmh.annotations.Measurement;
-import org.openjdk.jmh.annotations.Warmup;
-
-@Warmup(iterations = 1)
-@Measurement(iterations = 1)
-@Fork(1)
-/**
- * This dummy class is used to verify that the JMH microbenchmarking environment is set up properly.
- */
-public class TestJMH {
-
-    @Benchmark
-    public void testJMH() {
-        // This method was intentionally left blank.
-    }
-
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/org/graalvm/compiler/microbenchmarks/graal/TestJMHWhitebox.java	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.microbenchmarks.graal;
+
+import org.graalvm.compiler.microbenchmarks.graal.util.GraalState;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Warmup;
+
+@Warmup(iterations = 1)
+@Measurement(iterations = 1)
+@Fork(1)
+/**
+ * This dummy class is used to verify that the JMH microbenchmarking environment is set up properly.
+ */
+public class TestJMHWhitebox {
+
+    @Benchmark
+    public void testJMH(@SuppressWarnings("unused") GraalState s) {
+        // This method was intentionally left blank.
+    }
+
+}
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes.test/src/org/graalvm/compiler/nodes/test/IntegerStampTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes.test/src/org/graalvm/compiler/nodes/test/IntegerStampTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,12 +25,10 @@
 import static org.graalvm.compiler.core.test.GraalCompilerTest.getInitialOptions;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
-import jdk.vm.ci.meta.JavaConstant;
-import jdk.vm.ci.meta.JavaKind;
 
-import org.junit.Before;
-import org.junit.Test;
+import java.math.BigInteger;
 
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.IntegerConvertOp;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.ShiftOp;
 import org.graalvm.compiler.core.common.type.IntegerStamp;
@@ -42,6 +40,12 @@
 import org.graalvm.compiler.nodes.StructuredGraph;
 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
 import org.graalvm.compiler.options.OptionValues;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
 
 /**
  * This class tests that integer stamps are created correctly for constants.
@@ -365,10 +369,187 @@
         assertEquals(IntegerStamp.create(32, 0, 0x1ff, 0, 0x1ff), shl.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
         assertEquals(IntegerStamp.create(32, 0, 0x1fe0, 0, 0x1fe0), shl.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
         assertEquals(IntegerStamp.create(32, 0x1e0, 0x1fe0, 0, 0x1fe0), shl.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(32, -4096, -4096, -4096, -4096), shl.foldStamp(IntegerStamp.create(32, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Int), shl.foldStamp(StampFactory.empty(JavaKind.Int), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Int), shl.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
 
         assertEquals(IntegerStamp.create(64, 0, 0x1ff, 0, 0x1ff), shl.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
         assertEquals(IntegerStamp.create(64, 0, 0x1fe0, 0, 0x1fe0), shl.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
         assertEquals(IntegerStamp.create(64, 0x1e0, 0x1fe0, 0, 0x1fe0), shl.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(64, -4096, -4096, -4096, -4096), shl.foldStamp(IntegerStamp.create(64, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Long), shl.foldStamp(StampFactory.empty(JavaKind.Long), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Long), shl.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
+    }
 
+    @Test
+    public void testUnsignedShiftRight() {
+        ShiftOp<?> ushr = IntegerStamp.OPS.getUShr();
+        assertEquals(IntegerStamp.create(32, 0, 0xff, 0, 0xff), ushr.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
+        assertEquals(IntegerStamp.create(32, 0, 0x07, 0, 0x07), ushr.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(32, 0x0, 0x07, 0, 0x07), ushr.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(32, 0xffffff, 0xffffff, 0xffffff, 0xffffff), ushr.foldStamp(IntegerStamp.create(32, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Int), ushr.foldStamp(StampFactory.empty(JavaKind.Int), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Int), ushr.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
+
+        assertEquals(IntegerStamp.create(64, 0, 0xff, 0, 0xff), ushr.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
+        assertEquals(IntegerStamp.create(64, 0, 0x07, 0, 0x07), ushr.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(64, 0x0, 0x07, 0, 0x07), ushr.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(64, 0xffffffffffffffL, 0xffffffffffffffL, 0xffffffffffffffL, 0xffffffffffffffL),
+                        ushr.foldStamp(IntegerStamp.create(64, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Long), ushr.foldStamp(StampFactory.empty(JavaKind.Long), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Long), ushr.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
+    }
+
+    @Test
+    public void testShiftRight() {
+        ShiftOp<?> shr = IntegerStamp.OPS.getShr();
+        assertEquals(IntegerStamp.create(32, 0, 0xff, 0, 0xff), shr.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
+        assertEquals(IntegerStamp.create(32, 0, 0x07, 0, 0x07), shr.foldStamp(IntegerStamp.create(32, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(32, 0x0, 0x07, 0, 0x07), shr.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(32, -1, -1, -1, -1), shr.foldStamp(IntegerStamp.create(32, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Int), shr.foldStamp(StampFactory.empty(JavaKind.Int), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Int), shr.foldStamp(IntegerStamp.create(32, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
+
+        assertEquals(IntegerStamp.create(64, 0, 0xff, 0, 0xff), shr.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 0, 1, 0, 1)));
+        assertEquals(IntegerStamp.create(64, 0, 0x07, 0, 0x07), shr.foldStamp(IntegerStamp.create(64, 0, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(64, 0x0, 0x07, 0, 0x07), shr.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(IntegerStamp.create(64, -1, -1, -1, -1), shr.foldStamp(IntegerStamp.create(64, -16, -16, -16, -16), IntegerStamp.create(32, 8, 8, 8, 8)));
+        assertEquals(StampFactory.empty(JavaKind.Long), shr.foldStamp(StampFactory.empty(JavaKind.Long), IntegerStamp.create(32, 5, 5, 5, 5)));
+        assertEquals(StampFactory.empty(JavaKind.Long), shr.foldStamp(IntegerStamp.create(64, 0xf, 0xff, 0, 0xff), (IntegerStamp) StampFactory.empty(JavaKind.Int)));
+    }
+
+    @Test
+    public void testMulHigh() {
+        testSomeMulHigh(IntegerStamp.OPS.getMulHigh());
+    }
+
+    @Test
+    public void testUMulHigh() {
+        testSomeMulHigh(IntegerStamp.OPS.getUMulHigh());
+    }
+
+    private static void testSomeMulHigh(BinaryOp<?> someMulHigh) {
+        // 32 bits
+        testMulHigh(someMulHigh, 0, 0, 32);
+
+        testMulHigh(someMulHigh, 1, 1, 32);
+        testMulHigh(someMulHigh, 1, 5, 32);
+        testMulHigh(someMulHigh, 256, 256, 32);
+        testMulHigh(someMulHigh, 0xFFFFFFF, 0xFFFFFFA, 32);
+        testMulHigh(someMulHigh, Integer.MAX_VALUE, 2, 32);
+
+        testMulHigh(someMulHigh, -1, -1, 32);
+        testMulHigh(someMulHigh, -1, -5, 32);
+        testMulHigh(someMulHigh, -256, -256, 32);
+        testMulHigh(someMulHigh, -0xFFFFFFF, -0xFFFFFFA, 32);
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, -2, 32);
+
+        testMulHigh(someMulHigh, -1, 1, 32);
+        testMulHigh(someMulHigh, -1, 5, 32);
+        testMulHigh(someMulHigh, -256, 256, 32);
+        testMulHigh(someMulHigh, -0xFFFFFFF, 0xFFFFFFA, 32);
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, 2, 32);
+
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, Integer.MIN_VALUE, 32);
+        testMulHigh(someMulHigh, Integer.MAX_VALUE, Integer.MAX_VALUE, 32);
+
+        assertEquals(StampFactory.forKind(JavaKind.Int).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).empty(), StampFactory.forKind(JavaKind.Int).empty()));
+        assertEquals(StampFactory.forKind(JavaKind.Int).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).empty(), StampFactory.forKind(JavaKind.Int).unrestricted()));
+        assertEquals(StampFactory.forKind(JavaKind.Int).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).empty(), IntegerStamp.create(32, 0, 0)));
+        assertEquals(StampFactory.forKind(JavaKind.Int).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).empty(), IntegerStamp.create(32, 1, 1)));
+        assertEquals(StampFactory.forKind(JavaKind.Int).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).empty(), IntegerStamp.create(32, -1, -1)));
+
+        assertEquals(StampFactory.forKind(JavaKind.Int).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).unrestricted(), StampFactory.forKind(JavaKind.Int).unrestricted()));
+        assertEquals(StampFactory.forKind(JavaKind.Int).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).unrestricted(), IntegerStamp.create(32, 0, 0)));
+        assertEquals(StampFactory.forKind(JavaKind.Int).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).unrestricted(), IntegerStamp.create(32, 1, 1)));
+        assertEquals(StampFactory.forKind(JavaKind.Int).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Int).unrestricted(), IntegerStamp.create(32, -1, -1)));
+
+        // 64 bits
+        testMulHigh(someMulHigh, 0, 0, 64);
+
+        testMulHigh(someMulHigh, 1, 1, 64);
+        testMulHigh(someMulHigh, 1, 5, 64);
+        testMulHigh(someMulHigh, 256, 256, 64);
+        testMulHigh(someMulHigh, 0xFFFFFFF, 0xFFFFFFA, 64);
+        testMulHigh(someMulHigh, 0xFFFFFFFFFFFFFFL, 0xFFFFFFFFFFFFFAL, 64);
+        testMulHigh(someMulHigh, Integer.MAX_VALUE, 2, 64);
+        testMulHigh(someMulHigh, Long.MAX_VALUE, 2, 64);
+
+        testMulHigh(someMulHigh, -1, -1, 64);
+        testMulHigh(someMulHigh, -1, -5, 64);
+        testMulHigh(someMulHigh, -256, -256, 64);
+        testMulHigh(someMulHigh, -0xFFFFFFF, -0xFFFFFFA, 64);
+        testMulHigh(someMulHigh, -0xFFFFFFFFFFFFFFL, -0xFFFFFFFFFFFFFAL, 64);
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, -2, 64);
+        testMulHigh(someMulHigh, Long.MIN_VALUE, -2, 64);
+
+        testMulHigh(someMulHigh, -1, 1, 64);
+        testMulHigh(someMulHigh, -1, 5, 64);
+        testMulHigh(someMulHigh, -256, 256, 64);
+        testMulHigh(someMulHigh, -0xFFFFFFF, 0xFFFFFFA, 64);
+        testMulHigh(someMulHigh, -0xFFFFFFFFFFFFFFL, 0xFFFFFFFFFFFFFAL, 64);
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, 2, 64);
+        testMulHigh(someMulHigh, Long.MIN_VALUE, 2, 64);
+
+        testMulHigh(someMulHigh, Integer.MIN_VALUE, Integer.MIN_VALUE, 64);
+        testMulHigh(someMulHigh, Long.MIN_VALUE, Long.MIN_VALUE, 64);
+        testMulHigh(someMulHigh, Integer.MAX_VALUE, Integer.MAX_VALUE, 64);
+        testMulHigh(someMulHigh, Long.MAX_VALUE, Long.MAX_VALUE, 64);
+
+        assertEquals(StampFactory.forKind(JavaKind.Long).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).empty(), StampFactory.forKind(JavaKind.Long).empty()));
+        assertEquals(StampFactory.forKind(JavaKind.Long).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).empty(), StampFactory.forKind(JavaKind.Long).unrestricted()));
+        assertEquals(StampFactory.forKind(JavaKind.Long).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).empty(), IntegerStamp.create(64, 0, 0)));
+        assertEquals(StampFactory.forKind(JavaKind.Long).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).empty(), IntegerStamp.create(64, 1, 1)));
+        assertEquals(StampFactory.forKind(JavaKind.Long).empty(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).empty(), IntegerStamp.create(64, -1, -1)));
+
+        assertEquals(StampFactory.forKind(JavaKind.Long).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).unrestricted(), StampFactory.forKind(JavaKind.Long).unrestricted()));
+        assertEquals(StampFactory.forKind(JavaKind.Long).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).unrestricted(), IntegerStamp.create(64, 0, 0)));
+        assertEquals(StampFactory.forKind(JavaKind.Long).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).unrestricted(), IntegerStamp.create(64, 1, 1)));
+        assertEquals(StampFactory.forKind(JavaKind.Long).unrestricted(), someMulHigh.foldStamp(StampFactory.forKind(JavaKind.Long).unrestricted(), IntegerStamp.create(64, -1, -1)));
+    }
+
+    private static void testMulHigh(BinaryOp<?> someMulHigh, long a, long b, int bits) {
+        long expectedResult = getExpectedValue(someMulHigh, a, b, bits);
+        assertEquals(IntegerStamp.create(bits, expectedResult, expectedResult), someMulHigh.foldStamp(IntegerStamp.create(bits, a, a), IntegerStamp.create(bits, b, b)));
+    }
+
+    private static long getExpectedValue(BinaryOp<?> someMulHigh, long a, long b, int bits) {
+        if (someMulHigh == IntegerStamp.OPS.getMulHigh()) {
+            return mulHigh(a, b, bits);
+        } else {
+            assertEquals(IntegerStamp.OPS.getUMulHigh(), someMulHigh);
+            return umulHigh(a, b, bits);
+        }
+    }
+
+    private static long mulHigh(long a, long b, int bits) {
+        BigInteger valA = BigInteger.valueOf(a);
+        BigInteger valB = BigInteger.valueOf(b);
+        BigInteger result = valA.multiply(valB).shiftRight(bits);
+        if (bits == 32) {
+            return result.intValue();
+        } else {
+            assertEquals(64, bits);
+            return result.longValue();
+        }
+    }
+
+    private static long umulHigh(long a, long b, int bits) {
+        Assert.assertTrue(bits == 32 || bits == 64);
+        BigInteger valA = BigInteger.valueOf(a);
+        if (valA.compareTo(BigInteger.valueOf(0)) < 0) {
+            valA = valA.add(BigInteger.ONE.shiftLeft(bits));
+        }
+        BigInteger valB = BigInteger.valueOf(b);
+        if (valB.compareTo(BigInteger.valueOf(0)) < 0) {
+            valB = valB.add(BigInteger.ONE.shiftLeft(bits));
+        }
+
+        BigInteger result = valA.multiply(valB).shiftRight(bits);
+        if (bits == 32) {
+            return result.intValue();
+        } else {
+            return result.longValue();
+        }
     }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/GraphDecoder.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/GraphDecoder.java	Wed Aug 23 11:24:50 2017 -0700
@@ -466,6 +466,28 @@
             AbstractMergeNode merge = (AbstractMergeNode) node;
             EndNode singleEnd = merge.forwardEndAt(0);
 
+            /*
+             * In some corner cases, the MergeNode already has PhiNodes. Since there is a single
+             * EndNode, each PhiNode can only have one input, and we can replace the PhiNode with
+             * this single input.
+             */
+            for (PhiNode phi : merge.phis()) {
+                assert phi.inputs().count() == 1 : "input count must match end count";
+                Node singlePhiInput = phi.inputs().first();
+
+                /*
+                 * We do not have the orderID of the PhiNode anymore, so we need to search through
+                 * the complete list of nodes to find a match.
+                 */
+                for (int i = 0; i < loopScope.createdNodes.length; i++) {
+                    if (loopScope.createdNodes[i] == phi) {
+                        loopScope.createdNodes[i] = singlePhiInput;
+                    }
+                }
+
+                phi.replaceAndDelete(singlePhiInput);
+            }
+
             /* Nodes that would use this merge as the guard need to use the previous block. */
             registerNode(loopScope, nodeOrderId, AbstractBeginNode.prevBegin(singleEnd), true, false);
 
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/calc/MulNode.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/calc/MulNode.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,6 +25,7 @@
 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
 
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
+import org.graalvm.compiler.core.common.type.IntegerStamp;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp;
 import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.Mul;
 import org.graalvm.compiler.core.common.type.Stamp;
@@ -108,6 +109,27 @@
                         return AddNode.create(new LeftShiftNode(forX, ConstantNode.forInt(CodeUtil.log2(i - 1))), forX);
                     } else if (CodeUtil.isPowerOf2(i + 1)) {
                         return SubNode.create(new LeftShiftNode(forX, ConstantNode.forInt(CodeUtil.log2(i + 1))), forX);
+                    } else {
+                        int bitCount = Long.bitCount(i);
+                        long highestBitValue = Long.highestOneBit(i);
+                        if (bitCount == 2) {
+                            // e.g., 0b1000_0010
+                            long lowerBitValue = i - highestBitValue;
+                            assert highestBitValue > 0 && lowerBitValue > 0;
+                            ValueNode left = new LeftShiftNode(forX, ConstantNode.forInt(CodeUtil.log2(highestBitValue)));
+                            ValueNode right = lowerBitValue == 1 ? forX : new LeftShiftNode(forX, ConstantNode.forInt(CodeUtil.log2(lowerBitValue)));
+                            return AddNode.create(left, right);
+                        } else {
+                            // e.g., 0b1111_1101
+                            int shiftToRoundUpToPowerOf2 = CodeUtil.log2(highestBitValue) + 1;
+                            long subValue = (1 << shiftToRoundUpToPowerOf2) - i;
+                            if (CodeUtil.isPowerOf2(subValue) && shiftToRoundUpToPowerOf2 < ((IntegerStamp) stamp).getBits()) {
+                                assert CodeUtil.log2(subValue) >= 1;
+                                ValueNode left = new LeftShiftNode(forX, ConstantNode.forInt(shiftToRoundUpToPowerOf2));
+                                ValueNode right = new LeftShiftNode(forX, ConstantNode.forInt(CodeUtil.log2(subValue)));
+                                return SubNode.create(left, right);
+                            }
+                        }
                     }
                 } else if (i < 0) {
                     if (CodeUtil.isPowerOf2(-i)) {
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/cfg/ControlFlowGraph.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/cfg/ControlFlowGraph.java	Wed Aug 23 11:24:50 2017 -0700
@@ -562,7 +562,7 @@
                 if (pred.getSuccessorCount() > 1) {
                     assert pred.getEndNode() instanceof ControlSplitNode;
                     ControlSplitNode controlSplit = (ControlSplitNode) pred.getEndNode();
-                    probability *= controlSplit.probability(block.getBeginNode());
+                    probability = multiplyProbabilities(probability, controlSplit.probability(block.getBeginNode()));
                 }
             } else {
                 probability = predecessors[0].probability;
@@ -572,7 +572,7 @@
 
                 if (block.getBeginNode() instanceof LoopBeginNode) {
                     LoopBeginNode loopBegin = (LoopBeginNode) block.getBeginNode();
-                    probability *= loopBegin.loopFrequency();
+                    probability = multiplyProbabilities(probability, loopBegin.loopFrequency());
                 }
             }
             if (probability < MIN_PROBABILITY) {
@@ -755,4 +755,20 @@
     public void setNodeToBlock(NodeMap<Block> nodeMap) {
         this.nodeToBlock = nodeMap;
     }
+
+    /**
+     * Multiplies a and b and clamps the between {@link ControlFlowGraph#MIN_PROBABILITY} and
+     * {@link ControlFlowGraph#MAX_PROBABILITY}.
+     */
+    public static double multiplyProbabilities(double a, double b) {
+        assert !Double.isNaN(a) && !Double.isNaN(b) && Double.isFinite(a) && Double.isFinite(b) : a + " " + b;
+        double r = a * b;
+        if (r > MAX_PROBABILITY) {
+            return MAX_PROBABILITY;
+        }
+        if (r < MIN_PROBABILITY) {
+            return MIN_PROBABILITY;
+        }
+        return r;
+    }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options.processor/src/org/graalvm/compiler/options/processor/OptionProcessor.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options.processor/src/org/graalvm/compiler/options/processor/OptionProcessor.java	Wed Aug 23 11:24:50 2017 -0700
@@ -22,9 +22,12 @@
  */
 package org.graalvm.compiler.options.processor;
 
+import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -50,7 +53,9 @@
 import javax.lang.model.util.Elements;
 import javax.lang.model.util.Types;
 import javax.tools.Diagnostic.Kind;
+import javax.tools.FileObject;
 import javax.tools.JavaFileObject;
+import javax.tools.StandardLocation;
 
 import org.graalvm.compiler.options.Option;
 import org.graalvm.compiler.options.OptionDescriptor;
@@ -117,22 +122,13 @@
             return;
         }
 
-        String help = annotation.help();
-        if (help.length() != 0) {
-            char firstChar = help.charAt(0);
-            if (!Character.isUpperCase(firstChar)) {
-                processingEnv.getMessager().printMessage(Kind.ERROR, "Option help text must start with upper case letter", element);
-                return;
-            }
-        }
-
         String optionName = annotation.name();
         if (optionName.equals("")) {
             optionName = fieldName;
         }
 
         if (!Character.isUpperCase(optionName.charAt(0))) {
-            processingEnv.getMessager().printMessage(Kind.ERROR, "Option name must start with capital letter", element);
+            processingEnv.getMessager().printMessage(Kind.ERROR, "Option name must start with an upper case letter", element);
             return;
         }
 
@@ -154,6 +150,7 @@
         String separator = "";
         Set<Element> originatingElementsList = info.originatingElements;
         originatingElementsList.add(field);
+        PackageElement enclosingPackage = null;
         while (enclosing != null) {
             if (enclosing.getKind() == ElementKind.CLASS || enclosing.getKind() == ElementKind.INTERFACE) {
                 if (enclosing.getModifiers().contains(Modifier.PRIVATE)) {
@@ -164,13 +161,64 @@
                 originatingElementsList.add(enclosing);
                 declaringClass = enclosing.getSimpleName() + separator + declaringClass;
                 separator = ".";
-            } else {
-                assert enclosing.getKind() == ElementKind.PACKAGE;
+            } else if (enclosing.getKind() == ElementKind.PACKAGE) {
+                enclosingPackage = (PackageElement) enclosing;
             }
             enclosing = enclosing.getEnclosingElement();
         }
+        if (enclosingPackage == null) {
+            processingEnv.getMessager().printMessage(Kind.ERROR, "Option field cannot be declared in the unnamed package", element);
+            return;
+        }
+        String[] helpValue = annotation.help();
+        String help = "";
+        String[] extraHelp = {};
 
-        info.options.add(new OptionInfo(optionName, help, optionType, declaringClass, field));
+        if (helpValue.length == 1) {
+            help = helpValue[0];
+            if (help.startsWith("file:")) {
+                String path = help.substring("file:".length());
+                Filer filer = processingEnv.getFiler();
+                try {
+                    FileObject file;
+                    try {
+                        file = filer.getResource(StandardLocation.SOURCE_PATH, enclosingPackage.getQualifiedName(), path);
+                    } catch (IllegalArgumentException | IOException e) {
+                        // Handle the case when a compiler doesn't support the SOURCE_PATH location
+                        file = filer.getResource(StandardLocation.CLASS_OUTPUT, enclosingPackage.getQualifiedName(), path);
+                    }
+                    try (BufferedReader br = new BufferedReader(new InputStreamReader(file.openInputStream()))) {
+                        help = br.readLine();
+                        if (help == null) {
+                            help = "";
+                        }
+                        String line = br.readLine();
+                        List<String> lines = new ArrayList<>();
+                        while (line != null) {
+                            lines.add(line);
+                            line = br.readLine();
+                        }
+                        extraHelp = lines.toArray(new String[lines.size()]);
+                    }
+                } catch (IOException e) {
+                    String msg = String.format("Error reading %s containing the help text for option field: %s", path, e);
+                    processingEnv.getMessager().printMessage(Kind.ERROR, msg, element);
+                    return;
+                }
+            }
+        } else if (helpValue.length > 1) {
+            help = helpValue[0];
+            extraHelp = Arrays.copyOfRange(helpValue, 1, helpValue.length);
+        }
+        if (help.length() != 0) {
+            char firstChar = help.charAt(0);
+            if (!Character.isUpperCase(firstChar)) {
+                processingEnv.getMessager().printMessage(Kind.ERROR, "Option help text must start with an upper case letter", element);
+                return;
+            }
+        }
+
+        info.options.add(new OptionInfo(optionName, help, extraHelp, optionType, declaringClass, field));
     }
 
     private void createFiles(OptionsInfo info) {
@@ -200,11 +248,11 @@
 
             String desc = OptionDescriptor.class.getSimpleName();
 
-            int i = 0;
             Collections.sort(info.options);
 
             out.println("    @Override");
             out.println("    public OptionDescriptor get(String value) {");
+            out.println("        switch (value) {");
             out.println("        // CheckStyle: stop line length check");
             for (OptionInfo option : info.options) {
                 String name = option.name;
@@ -214,41 +262,52 @@
                 } else {
                     optionField = option.declaringClass + "." + option.field.getSimpleName();
                 }
+                out.println("        case \"" + name + "\": {");
                 String type = option.type;
                 String help = option.help;
+                String[] extraHelp = option.extraHelp;
                 String declaringClass = option.declaringClass;
                 Name fieldName = option.field.getSimpleName();
-                out.println("        if (value.equals(\"" + name + "\")) {");
-                out.printf("            return %s.create(\"%s\", %s.class, \"%s\", %s.class, \"%s\", %s);\n", desc, name, type, help, declaringClass, fieldName, optionField);
+                out.printf("            return " + desc + ".create(\n");
+                out.printf("                /*name*/ \"%s\",\n", name);
+                out.printf("                /*type*/ %s.class,\n", type);
+                out.printf("                /*help*/ \"%s\",\n", help);
+                if (extraHelp.length != 0) {
+                    out.printf("                /*extraHelp*/ new String[] {\n");
+                    for (String line : extraHelp) {
+                        out.printf("                         \"%s\",\n", line.replace("\\", "\\\\").replace("\"", "\\\""));
+                    }
+                    out.printf("                              },\n");
+                }
+                out.printf("                /*declaringClass*/ %s.class,\n", declaringClass);
+                out.printf("                /*fieldName*/ \"%s\",\n", fieldName);
+                out.printf("                /*option*/ %s);\n", optionField);
                 out.println("        }");
             }
             out.println("        // CheckStyle: resume line length check");
+            out.println("        }");
             out.println("        return null;");
             out.println("    }");
             out.println();
             out.println("    @Override");
             out.println("    public Iterator<" + desc + "> iterator() {");
-            out.println("        // CheckStyle: stop line length check");
-            out.println("        List<" + desc + "> options = Arrays.asList(");
-            for (OptionInfo option : info.options) {
-                String optionField;
-                if (option.field.getModifiers().contains(Modifier.PRIVATE)) {
-                    throw new InternalError();
-                } else {
-                    optionField = option.declaringClass + "." + option.field.getSimpleName();
-                }
-                String name = option.name;
-                String type = option.type;
-                String help = option.help;
-                String declaringClass = option.declaringClass;
-                Name fieldName = option.field.getSimpleName();
-                String comma = i == info.options.size() - 1 ? "" : ",";
-                out.printf("            %s.create(\"%s\", %s.class, \"%s\", %s.class, \"%s\", %s)%s\n", desc, name, type, help, declaringClass, fieldName, optionField, comma);
-                i++;
+            out.println("        return new Iterator<OptionDescriptor>() {");
+            out.println("            int i = 0;");
+            out.println("            @Override");
+            out.println("            public boolean hasNext() {");
+            out.println("                return i < " + info.options.size() + ";");
+            out.println("            }");
+            out.println("            @Override");
+            out.println("            public OptionDescriptor next() {");
+            out.println("                switch (i++) {");
+            for (int i = 0; i < info.options.size(); i++) {
+                OptionInfo option = info.options.get(i);
+                out.println("                    case " + i + ": return get(\"" + option.name + "\");");
             }
-            out.println("        );");
-            out.println("        // CheckStyle: resume line length check");
-            out.println("        return options.iterator();");
+            out.println("                }");
+            out.println("                throw new NoSuchElementException();");
+            out.println("            }");
+            out.println("        };");
             out.println("    }");
             out.println("}");
         }
@@ -274,13 +333,15 @@
 
         final String name;
         final String help;
+        final String[] extraHelp;
         final String type;
         final String declaringClass;
         final VariableElement field;
 
-        OptionInfo(String name, String help, String type, String declaringClass, VariableElement field) {
+        OptionInfo(String name, String help, String[] extraHelp, String type, String declaringClass, VariableElement field) {
             this.name = name;
             this.help = help;
+            this.extraHelp = extraHelp;
             this.type = type;
             this.declaringClass = declaringClass;
             this.field = field;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/EnumOptionKey.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/EnumOptionKey.java	Wed Aug 23 11:24:50 2017 -0700
@@ -28,27 +28,10 @@
 
 public class EnumOptionKey<T extends Enum<T>> extends OptionKey<T> {
     final Class<T> enumClass;
-    final ValueHelp<T> valueHelp;
-
-    /**
-     * Provides help text for enum values.
-     */
-    public interface ValueHelp<T extends Enum<T>> {
-        /**
-         * Gets help text for the enum {@code value} that includes the name of the value. If
-         * {@code null} is returned, {@code value.toString()} is used.
-         */
-        String getHelp(Object value);
-    }
-
-    public EnumOptionKey(T value) {
-        this(value, null);
-    }
 
     @SuppressWarnings("unchecked")
-    public EnumOptionKey(T value, ValueHelp<T> help) {
+    public EnumOptionKey(T value) {
         super(value);
-        this.valueHelp = help;
         if (value == null) {
             throw new IllegalArgumentException("Value must not be null");
         }
@@ -62,10 +45,6 @@
         return EnumSet.allOf(enumClass);
     }
 
-    public ValueHelp<T> getValueHelp() {
-        return valueHelp;
-    }
-
     Object valueOf(String name) {
         try {
             return Enum.valueOf(enumClass, name);
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/Option.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/Option.java	Wed Aug 23 11:24:50 2017 -0700
@@ -38,10 +38,20 @@
 public @interface Option {
 
     /**
-     * Gets a help message for the option. New lines can be embedded in the message with
-     * {@code "%n"}.
+     * Gets a help message for the option.
+     * <p>
+     * The first element of the array is the short help message. This part of the help message is
+     * subject to line wrapping when printed.
+     * <p>
+     * The remaining elements contain a more detailed expansion of the help message and will be
+     * printed as is in a left-aligned block (i.e. leading spaces will be preserved).
+     * <p>
+     * If there is only one element and it starts with {@code "file:"<path>}, then the help message
+     * is located in a file located by resolving {@code <path>} against the location of the package
+     * in which the option is declared. The first line in the file is the short help message as
+     * described above. The remaining lines are the help message expansion.
      */
-    String help();
+    String[] help();
 
     /**
      * The name of the option. By default, the name of the annotated field should be used.
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionDescriptor.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionDescriptor.java	Wed Aug 23 11:24:50 2017 -0700
@@ -22,6 +22,10 @@
  */
 package org.graalvm.compiler.options;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 /**
  * Describes the attributes of a static field {@linkplain Option option} and provides access to its
  * {@linkplain OptionKey value}.
@@ -31,25 +35,34 @@
     protected final String name;
     protected final Class<?> type;
     protected final String help;
+    protected final List<String> extraHelp;
     protected final OptionKey<?> optionKey;
     protected final Class<?> declaringClass;
     protected final String fieldName;
 
+    private static final String[] NO_EXTRA_HELP = {};
+
     public static OptionDescriptor create(String name, Class<?> type, String help, Class<?> declaringClass, String fieldName, OptionKey<?> option) {
+        return create(name, type, help, NO_EXTRA_HELP, declaringClass, fieldName, option);
+    }
+
+    public static OptionDescriptor create(String name, Class<?> type, String help, String[] extraHelp, Class<?> declaringClass, String fieldName, OptionKey<?> option) {
         assert option != null : declaringClass + "." + fieldName;
         OptionDescriptor result = option.getDescriptor();
         if (result == null) {
-            result = new OptionDescriptor(name, type, help, declaringClass, fieldName, option);
+            List<String> extraHelpList = extraHelp == null || extraHelp.length == 0 ? Collections.emptyList() : Collections.unmodifiableList(Arrays.asList(extraHelp));
+            result = new OptionDescriptor(name, type, help, extraHelpList, declaringClass, fieldName, option);
             option.setDescriptor(result);
         }
         assert result.name.equals(name) && result.type == type && result.declaringClass == declaringClass && result.fieldName.equals(fieldName) && result.optionKey == option;
         return result;
     }
 
-    private OptionDescriptor(String name, Class<?> type, String help, Class<?> declaringClass, String fieldName, OptionKey<?> optionKey) {
+    private OptionDescriptor(String name, Class<?> type, String help, List<String> extraHelp, Class<?> declaringClass, String fieldName, OptionKey<?> optionKey) {
         this.name = name;
         this.type = type;
         this.help = help;
+        this.extraHelp = extraHelp;
         this.optionKey = optionKey;
         this.declaringClass = declaringClass;
         this.fieldName = fieldName;
@@ -65,13 +78,24 @@
     }
 
     /**
-     * Gets a descriptive help message for the option.
+     * Gets a descriptive help message for the option. This message should be self contained without
+     * relying on {@link #getExtraHelp() extra help lines}.
+     *
+     * @see Option#help()
      */
     public String getHelp() {
         return help;
     }
 
     /**
+     * Gets extra lines of help text. These lines should not be subject to any line wrapping or
+     * formatting apart from indentation.
+     */
+    public List<String> getExtraHelp() {
+        return extraHelp;
+    }
+
+    /**
      * Gets the name of the option. It's up to the client of this object how to use the name to get
      * a user specified value for the option from the environment.
      */
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionValues.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.options/src/org/graalvm/compiler/options/OptionValues.java	Wed Aug 23 11:24:50 2017 -0700
@@ -24,15 +24,12 @@
 
 import java.io.PrintStream;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Comparator;
-import java.util.EnumSet;
 import java.util.List;
 import java.util.Map;
 import java.util.SortedMap;
 import java.util.TreeMap;
 
-import org.graalvm.compiler.options.EnumOptionKey.ValueHelp;
 import org.graalvm.util.EconomicMap;
 import org.graalvm.util.Equivalence;
 import org.graalvm.util.UnmodifiableEconomicMap;
@@ -165,10 +162,9 @@
      * @return {@code text} broken into lines
      */
     private static List<String> wrap(String text, int width) {
-        List<String> lines = Collections.singletonList(text);
+        List<String> lines = new ArrayList<>();
         if (text.length() > width) {
             String[] chunks = text.split("\\s+");
-            lines = new ArrayList<>();
             StringBuilder line = new StringBuilder();
             for (String chunk : chunks) {
                 if (line.length() + chunk.length() > width) {
@@ -178,22 +174,13 @@
                 if (line.length() != 0) {
                     line.append(' ');
                 }
-                String[] embeddedLines = chunk.split("%n", -2);
-                if (embeddedLines.length == 1) {
-                    line.append(chunk);
-                } else {
-                    for (int i = 0; i < embeddedLines.length; i++) {
-                        line.append(embeddedLines[i]);
-                        if (i < embeddedLines.length - 1) {
-                            lines.add(line.toString());
-                            line.setLength(0);
-                        }
-                    }
-                }
+                line.append(chunk);
             }
             if (line.length() != 0) {
                 lines.add(line.toString());
             }
+        } else {
+            lines.add(text);
         }
         return lines;
     }
@@ -222,24 +209,7 @@
             if (value instanceof String) {
                 value = '"' + String.valueOf(value) + '"';
             }
-            String help = desc.getHelp();
-            if (desc.getOptionKey() instanceof EnumOptionKey) {
-                EnumOptionKey<?> eoption = (EnumOptionKey<?>) desc.getOptionKey();
-                EnumSet<?> evalues = eoption.getAllValues();
-                String evaluesString = evalues.toString();
-                ValueHelp<?> valueHelp = eoption.getValueHelp();
-                if (help.length() > 0 && !help.endsWith(".")) {
-                    help += ".";
-                }
-                if (valueHelp == null) {
-                    help += " Valid values are: " + evaluesString.substring(1, evaluesString.length() - 1);
-                } else {
-                    for (Object o : evalues) {
-                        String vhelp = valueHelp.getHelp(o);
-                        help += "%n" + (vhelp == null ? o : vhelp);
-                    }
-                }
-            }
+
             String name = namePrefix + e.getKey();
             String assign = containsKey(desc.optionKey) ? ":=" : "=";
             String typeName = desc.getOptionKey() instanceof EnumOptionKey ? "String" : desc.getType().getSimpleName();
@@ -252,11 +222,16 @@
                 out.printf("%s[%s]%n", linePrefix, typeName);
             }
 
+            List<String> helpLines;
+            String help = desc.getHelp();
             if (help.length() != 0) {
-                List<String> helpLines = wrap(help, PROPERTY_LINE_WIDTH - PROPERTY_HELP_INDENT);
-                for (int i = 0; i < helpLines.size(); i++) {
-                    out.printf("%" + PROPERTY_HELP_INDENT + "s%s%n", "", helpLines.get(i));
-                }
+                helpLines = wrap(help, PROPERTY_LINE_WIDTH - PROPERTY_HELP_INDENT);
+                helpLines.addAll(desc.getExtraHelp());
+            } else {
+                helpLines = desc.getExtraHelp();
+            }
+            for (String line : helpLines) {
+                out.printf("%" + PROPERTY_HELP_INDENT + "s%s%n", "", line);
             }
         }
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/InliningUtil.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/InliningUtil.java	Wed Aug 23 11:24:50 2017 -0700
@@ -30,6 +30,7 @@
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 import java.util.function.Consumer;
 
 import org.graalvm.compiler.api.replacements.MethodSubstitution;
@@ -351,7 +352,7 @@
             }
         }
 
-        updateSourcePositions(invoke, inlineGraph, duplicates);
+        updateSourcePositions(invoke, inlineGraph, duplicates, !Objects.equals(inlineGraph.method(), inlineeMethod));
         if (stateAfter != null) {
             processFrameStates(invoke, inlineGraph, duplicates, stateAtExceptionEdge, returnNodes.size() > 1);
             int callerLockDepth = stateAfter.nestedLockDepth();
@@ -569,14 +570,14 @@
     }
 
     @SuppressWarnings("try")
-    private static void updateSourcePositions(Invoke invoke, StructuredGraph inlineGraph, UnmodifiableEconomicMap<Node, Node> duplicates) {
+    private static void updateSourcePositions(Invoke invoke, StructuredGraph inlineGraph, UnmodifiableEconomicMap<Node, Node> duplicates, boolean isSubstitution) {
         if (inlineGraph.mayHaveNodeSourcePosition() && invoke.stateAfter() != null) {
             if (invoke.asNode().getNodeSourcePosition() == null) {
                 // Temporarily ignore the assert below.
                 return;
             }
 
-            JavaConstant constantReceiver = invoke.getInvokeKind().hasReceiver() ? invoke.getReceiver().asJavaConstant() : null;
+            JavaConstant constantReceiver = invoke.getInvokeKind().hasReceiver() && !isSubstitution ? invoke.getReceiver().asJavaConstant() : null;
             NodeSourcePosition invokePos = invoke.asNode().getNodeSourcePosition();
             assert invokePos != null : "missing source information";
 
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/policy/AbstractInliningPolicy.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/policy/AbstractInliningPolicy.java	Wed Aug 23 11:24:50 2017 -0700
@@ -75,10 +75,11 @@
     }
 
     private static boolean onlyForcedIntrinsics(Replacements replacements, InlineInfo info) {
-        for (int i = 0; i < info.numberOfMethods(); i++) {
-            if (!InliningUtil.canIntrinsify(replacements, info.methodAt(i), info.invoke().bci())) {
-                return false;
-            }
+        if (!onlyIntrinsics(replacements, info)) {
+            return false;
+        }
+        if (!info.shouldInline()) {
+            return false;
         }
         return true;
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/FixedNodeProbabilityCache.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/graph/FixedNodeProbabilityCache.java	Wed Aug 23 11:24:50 2017 -0700
@@ -39,6 +39,8 @@
 import org.graalvm.util.EconomicMap;
 import org.graalvm.util.Equivalence;
 
+import static org.graalvm.compiler.nodes.cfg.ControlFlowGraph.multiplyProbabilities;
+
 /**
  * Compute probabilities for fixed nodes on the fly and cache them at {@link AbstractBeginNode}s.
  */
@@ -106,7 +108,7 @@
             }
         } else {
             ControlSplitNode split = (ControlSplitNode) current.predecessor();
-            probability = split.probability((AbstractBeginNode) current) * applyAsDouble(split);
+            probability = multiplyProbabilities(split.probability((AbstractBeginNode) current), applyAsDouble(split));
         }
         assert !Double.isNaN(probability) && !Double.isInfinite(probability) : current + " " + probability;
         cache.put(current, probability);
@@ -125,7 +127,7 @@
             result += applyAsDouble(endNode);
         }
         if (current instanceof LoopBeginNode) {
-            result *= ((LoopBeginNode) current).loopFrequency();
+            result = multiplyProbabilities(result, ((LoopBeginNode) current).loopFrequency());
         }
         return result;
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.printer/src/org/graalvm/compiler/printer/BinaryGraphPrinter.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.printer/src/org/graalvm/compiler/printer/BinaryGraphPrinter.java	Wed Aug 23 11:24:50 2017 -0700
@@ -366,7 +366,7 @@
             return ((Class<?>) obj).getName();
         }
         if (obj instanceof ResolvedJavaType) {
-            return ((ResolvedJavaType) obj).getName();
+            return ((ResolvedJavaType) obj).toJavaName();
         }
         return null;
     }
@@ -403,7 +403,7 @@
 
     @Override
     public String fieldTypeName(ResolvedJavaField field) {
-        return field.getType().getName();
+        return field.getType().toJavaName();
     }
 
     @Override
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.amd64/src/org/graalvm/compiler/replacements/amd64/AMD64GraphBuilderPlugins.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.amd64/src/org/graalvm/compiler/replacements/amd64/AMD64GraphBuilderPlugins.java	Wed Aug 23 11:24:50 2017 -0700
@@ -31,6 +31,8 @@
 import static org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode.UnaryOperation.TAN;
 import static org.graalvm.compiler.serviceprovider.JDK9Method.Java8OrEarlier;
 
+import java.util.Arrays;
+
 import org.graalvm.compiler.bytecode.BytecodeProvider;
 import org.graalvm.compiler.lir.amd64.AMD64ArithmeticLIRGeneratorTool.RoundingMode;
 import org.graalvm.compiler.nodes.ValueNode;
@@ -44,6 +46,7 @@
 import org.graalvm.compiler.nodes.java.AtomicReadAndWriteNode;
 import org.graalvm.compiler.nodes.memory.address.AddressNode;
 import org.graalvm.compiler.nodes.memory.address.OffsetAddressNode;
+import org.graalvm.compiler.replacements.ArraysSubstitutions;
 import org.graalvm.compiler.replacements.IntegerSubstitutions;
 import org.graalvm.compiler.replacements.LongSubstitutions;
 import org.graalvm.compiler.replacements.StandardGraphBuilderPlugins.UnsafeGetPlugin;
@@ -73,6 +76,7 @@
                 registerUnsafePlugins(invocationPlugins, replacementsBytecodeProvider);
                 registerStringPlugins(invocationPlugins, arch, replacementsBytecodeProvider);
                 registerMathPlugins(invocationPlugins, arch, arithmeticStubs, replacementsBytecodeProvider);
+                registerArraysEqualsPlugins(invocationPlugins, replacementsBytecodeProvider);
             }
         });
     }
@@ -229,4 +233,10 @@
             r.registerOptional4("put" + kind.name() + "Unaligned", Receiver.class, Object.class, long.class, javaClass, new UnsafePutPlugin(kind, false));
         }
     }
+
+    private static void registerArraysEqualsPlugins(InvocationPlugins plugins, BytecodeProvider bytecodeProvider) {
+        Registration r = new Registration(plugins, Arrays.class, bytecodeProvider);
+        r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", float[].class, float[].class);
+        r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", double[].class, double[].class);
+    }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/ArraysSubstitutionsTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/ArraysSubstitutionsTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -232,68 +232,6 @@
     }
 
     @Test
-    public void testEqualsFloat() {
-        Object[] args1 = new Object[N];
-        Object[] args2 = new Object[N];
-        int n = 0;
-
-        // equal arrays
-        for (int i = 0; i < N / 2; i++, n++) {
-            args1[n] = new float[i];
-            args2[n] = new float[i];
-        }
-
-        // non-equal arrays
-        for (int i = 0; i < N / 2; i++, n++) {
-            float[] a2 = new float[i];
-            if (i > 0) {
-                a2[i - 1] = 1;
-            }
-            args1[n] = new float[i];
-            args2[n] = a2;
-        }
-
-        Class<?>[] parameterTypes = new Class<?>[]{float[].class, float[].class};
-        testSubstitution("arraysEqualsFloat", ArrayEqualsNode.class, Arrays.class, "equals", parameterTypes, false, args1, args2);
-    }
-
-    @SuppressWarnings("all")
-    public static boolean arraysEqualsFloat(float[] a, float[] b) {
-        return Arrays.equals(a, b);
-    }
-
-    @Test
-    public void testEqualsDouble() {
-        Object[] args1 = new Object[N];
-        Object[] args2 = new Object[N];
-        int n = 0;
-
-        // equal arrays
-        for (int i = 0; i < N / 2; i++, n++) {
-            args1[n] = new double[i];
-            args2[n] = new double[i];
-        }
-
-        // non-equal arrays
-        for (int i = 0; i < N / 2; i++, n++) {
-            double[] a2 = new double[i];
-            if (i > 0) {
-                a2[i - 1] = 1;
-            }
-            args1[n] = new double[i];
-            args2[n] = a2;
-        }
-
-        Class<?>[] parameterTypes = new Class<?>[]{double[].class, double[].class};
-        testSubstitution("arraysEqualsDouble", ArrayEqualsNode.class, Arrays.class, "equals", parameterTypes, false, args1, args2);
-    }
-
-    @SuppressWarnings("all")
-    public static boolean arraysEqualsDouble(double[] a, double[] b) {
-        return Arrays.equals(a, b);
-    }
-
-    @Test
     public void testEqualsNodeGVN() {
         test("testEqualsNodeGVNSnippet", true);
     }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/DeoptimizeOnExceptionTest.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/DeoptimizeOnExceptionTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -24,16 +24,25 @@
 
 import java.util.Random;
 
+import org.graalvm.compiler.api.directives.GraalDirectives;
+import org.graalvm.compiler.core.phases.HighTier;
 import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext;
+import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin;
+import org.graalvm.compiler.options.OptionValues;
 import org.graalvm.compiler.phases.common.AbstractInliningPhase;
 import org.graalvm.compiler.test.ExportingClassLoader;
 import org.junit.Assert;
+import org.junit.Assume;
 import org.junit.Test;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Label;
 import org.objectweb.asm.MethodVisitor;
 import org.objectweb.asm.Opcodes;
 
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.meta.DeoptimizationReason;
 import jdk.vm.ci.meta.ResolvedJavaMethod;
 
 /**
@@ -90,6 +99,61 @@
         return "SUCCESS";
     }
 
+    @Test
+    public void test3() {
+        Assume.assumeTrue("Only works on jdk8 right now", Java8OrEarlier);
+        ResolvedJavaMethod method = getResolvedJavaMethod("test3Snippet");
+
+        for (int i = 0; i < 2; i++) {
+            Result actual;
+            boolean expectedCompiledCode = (method.getProfilingInfo().getDeoptimizationCount(DeoptimizationReason.NotCompiledExceptionHandler) != 0);
+            InstalledCode code = getCode(method, null, false, true, new OptionValues(getInitialOptions(), HighTier.Options.Inline, false));
+            assertTrue(code.isValid());
+
+            try {
+                actual = new Result(code.executeVarargs(false), null);
+            } catch (Exception e) {
+                actual = new Result(null, e);
+            }
+
+            assertTrue(i > 0 == expectedCompiledCode, "expect compiled code to stay around after the first iteration");
+            assertEquals(new Result(expectedCompiledCode, null), actual);
+            assertTrue(expectedCompiledCode == code.isValid());
+        }
+    }
+
+    @Override
+    protected InlineInvokePlugin.InlineInfo bytecodeParserShouldInlineInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) {
+        if (method.getName().equals("throwException")) {
+            if (b.getMethod().getProfilingInfo().getDeoptimizationCount(DeoptimizationReason.NotCompiledExceptionHandler) != 0) {
+                return InlineInvokePlugin.InlineInfo.DO_NOT_INLINE_WITH_EXCEPTION;
+            } else {
+                return InlineInvokePlugin.InlineInfo.DO_NOT_INLINE_NO_EXCEPTION;
+            }
+        }
+        return super.bytecodeParserShouldInlineInvoke(b, method, args);
+    }
+
+    private static void throwException() throws Exception {
+        throw new Exception();
+    }
+
+    static int footprint;
+
+    public static boolean test3Snippet(boolean rethrowException) throws Exception {
+        try {
+            footprint = 1;
+            throwException();
+        } catch (Exception e) {
+            footprint = 2;
+            if (rethrowException) {
+                throw e;
+            }
+        }
+
+        return GraalDirectives.inCompiledCode();
+    }
+
     public static class MyClassLoader extends ExportingClassLoader {
         @Override
         protected Class<?> findClass(String className) throws ClassNotFoundException {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/FloatArraysEqualsTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,204 @@
+/*
+ * Copyright (c) 2017, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.replacements.test;
+
+import java.util.Arrays;
+
+import org.graalvm.compiler.code.CompilationResult;
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.ConstantNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
+import org.junit.Test;
+
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+public class FloatArraysEqualsTest extends GraalCompilerTest {
+
+    public static boolean testFloatArraySnippet(float[] a, float[] b) {
+        return Arrays.equals(a, b);
+    }
+
+    private void testEqualInFloatArray(int arraySize, int index, float f1, float f2) {
+        if (arraySize > 0 && index >= 0 && index < arraySize) {
+            float[] a1 = new float[arraySize];
+            float[] a2 = new float[arraySize];
+            a1[index] = f1;
+            a2[index] = f2;
+            test("testFloatArraySnippet", a1, a2);
+        }
+    }
+
+    public static final int FLOAT_TAIL = 1;
+    public static final int FLOAT_8BYTE_ALIGNED = 2;
+    public static final int FLOAT_8BYTE_UNALIGNED = 3;
+    public static final int FLOAT_VECTOR_ALIGNED = 8;
+    public static final int FLOAT_VECTOR_UNALIGNED = 9;
+
+    @Test
+    public void testFloatArray() {
+        for (int size : new int[]{FLOAT_TAIL, FLOAT_8BYTE_ALIGNED, FLOAT_8BYTE_UNALIGNED, FLOAT_VECTOR_ALIGNED, FLOAT_VECTOR_UNALIGNED}) {
+            for (int index : new int[]{0, size - 1}) {
+                testEqualInFloatArray(size, index, 1024, 1024);
+                testEqualInFloatArray(size, index, 0.0f, -0.0f);
+                testEqualInFloatArray(size, index, Float.intBitsToFloat(0x7fc00000), Float.intBitsToFloat(0x7fc00000));
+                testEqualInFloatArray(size, index, Float.intBitsToFloat(0x7fc00000), Float.intBitsToFloat(0x7f800001));
+                testEqualInFloatArray(size, index, Float.intBitsToFloat(0x7fc00000), 1024);
+            }
+        }
+    }
+
+    public static boolean testDoubleArraySnippet(double[] a, double[] b) {
+        return Arrays.equals(a, b);
+    }
+
+    public static final int DOUBLE_8BYTE_ALIGNED = 1;
+    public static final int DOUBLE_VECTOR_ALIGNED = 4;
+    public static final int DOUBLE_VECTOR_UNALIGNED = 5;
+
+    private void testEqualInDoubleArray(int arraySize, int index, double d1, double d2) {
+        if (arraySize > 0 && index >= 0 && index < arraySize) {
+            double[] a1 = new double[arraySize];
+            double[] a2 = new double[arraySize];
+            a1[index] = d1;
+            a2[index] = d2;
+            test("testDoubleArraySnippet", a1, a2);
+        }
+    }
+
+    @Test
+    public void testDoubleArrayOrdinary() {
+        for (int size : new int[]{DOUBLE_8BYTE_ALIGNED, DOUBLE_VECTOR_ALIGNED, DOUBLE_VECTOR_UNALIGNED}) {
+            for (int index : new int[]{0, size - 1}) {
+                testEqualInDoubleArray(size, index, 1024, 1024);
+                testEqualInDoubleArray(size, index, 0.0d, -0.0d);
+                testEqualInDoubleArray(size, index, Double.longBitsToDouble(0x7ff8000000000000L), Double.longBitsToDouble(0x7ff8000000000000L));
+                testEqualInDoubleArray(size, index, Double.longBitsToDouble(0x7ff8000000000000L), Double.longBitsToDouble(0x7ff0000000000001L));
+                testEqualInDoubleArray(size, index, Double.longBitsToDouble(0x7ff8000000000000L), 1024);
+            }
+        }
+    }
+
+    public static boolean testFloatArrayWithPEASnippet0() {
+        return Arrays.equals(new float[]{0.0f}, new float[]{-0.0f});
+    }
+
+    public static boolean testFloatArrayWithPEASnippet1() {
+        return Arrays.equals(new float[]{Float.intBitsToFloat(0x7fc00000)}, new float[]{Float.intBitsToFloat(0x7fc00000)});
+    }
+
+    public static boolean testFloatArrayWithPEASnippet2() {
+        return Arrays.equals(new float[]{Float.intBitsToFloat(0x7fc00000)}, new float[]{Float.intBitsToFloat(0x7f800001)});
+
+    }
+
+    @Test
+    public void testFloatArrayWithPEA() {
+        test("testFloatArrayWithPEASnippet0");
+        test("testFloatArrayWithPEASnippet1");
+        test("testFloatArrayWithPEASnippet2");
+    }
+
+    public static boolean testDoubleArrayWithPEASnippet0() {
+        return Arrays.equals(new double[]{0.0d}, new double[]{-0.0d});
+    }
+
+    public static boolean testDoubleArrayWithPEASnippet1() {
+        return Arrays.equals(new double[]{Double.longBitsToDouble(0x7ff8000000000000L)}, new double[]{Double.longBitsToDouble(0x7ff8000000000000L)});
+    }
+
+    public static boolean testDoubleArrayWithPEASnippet2() {
+        return Arrays.equals(new double[]{Double.longBitsToDouble(0x7ff8000000000000L)}, new double[]{Double.longBitsToDouble(0x7ff0000000000001L)});
+    }
+
+    @Test
+    public void testDoubleArrayWithPEA() {
+        test("testDoubleArrayWithPEASnippet0");
+        test("testDoubleArrayWithPEASnippet1");
+        test("testDoubleArrayWithPEASnippet2");
+    }
+
+    public static final float[] FLOAT_ARRAY1 = new float[]{0.0f};
+    public static final float[] FLOAT_ARRAY2 = new float[]{-0.0f};
+    public static final float[] FLOAT_ARRAY3 = new float[]{Float.intBitsToFloat(0x7fc00000)};
+    public static final float[] FLOAT_ARRAY4 = new float[]{Float.intBitsToFloat(0x7f800001)};
+
+    public static final double[] DOUBLE_ARRAY1 = new double[]{0.0d};
+    public static final double[] DOUBLE_ARRAY2 = new double[]{-0.0d};
+    public static final double[] DOUBLE_ARRAY3 = new double[]{Double.longBitsToDouble(0x7ff8000000000000L)};
+    public static final double[] DOUBLE_ARRAY4 = new double[]{Double.longBitsToDouble(0x7ff0000000000001L)};
+
+    public static boolean testStableFloatArraySnippet0() {
+        return Arrays.equals(FLOAT_ARRAY1, FLOAT_ARRAY2);
+    }
+
+    public static boolean testStableFloatArraySnippet1() {
+        return Arrays.equals(FLOAT_ARRAY1, FLOAT_ARRAY2);
+    }
+
+    public static boolean testStableDoubleArraySnippet0() {
+        return Arrays.equals(DOUBLE_ARRAY1, DOUBLE_ARRAY2);
+    }
+
+    public static boolean testStableDoubleArraySnippet1() {
+        return Arrays.equals(DOUBLE_ARRAY3, DOUBLE_ARRAY4);
+    }
+
+    public void testStableArray(String methodName) {
+        ResolvedJavaMethod method = getResolvedJavaMethod(methodName);
+        Result expected = executeExpected(method, null);
+
+        StructuredGraph graph = parseEager(method, AllowAssumptions.YES);
+
+        for (ConstantNode constantNode : graph.getNodes().filter(ConstantNode.class).snapshot()) {
+            if (getConstantReflection().readArrayLength(constantNode.asJavaConstant()) != null) {
+                ConstantNode newConstantNode = ConstantNode.forConstant(constantNode.asJavaConstant(), 1, true, getMetaAccess());
+                newConstantNode = graph.unique(newConstantNode);
+                constantNode.replaceAndDelete(newConstantNode);
+            }
+        }
+
+        CompilationResult result = compile(method, graph);
+        InstalledCode code = addMethod(graph.getDebug(), method, result);
+
+        Result actual;
+
+        try {
+            actual = new Result(code.executeVarargs(), null);
+        } catch (Exception e) {
+            actual = new Result(null, e);
+        }
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testStableArray() {
+        testStableArray("testStableFloatArraySnippet0");
+        testStableArray("testStableFloatArraySnippet1");
+        testStableArray("testStableDoubleArraySnippet0");
+        testStableArray("testStableDoubleArraySnippet1");
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/UnsafeBooleanAccessTest.java	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.replacements.test;
+
+import java.lang.reflect.Field;
+
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.junit.Test;
+
+public class UnsafeBooleanAccessTest extends GraalCompilerTest {
+
+    private static short onHeapMemory;
+
+    private static final Object onHeapMemoryBase;
+    private static final long onHeapMemoryOffset;
+
+    static {
+        try {
+            Field staticField = UnsafeBooleanAccessTest.class.getDeclaredField("onHeapMemory");
+            onHeapMemoryBase = UNSAFE.staticFieldBase(staticField);
+            onHeapMemoryOffset = UNSAFE.staticFieldOffset(staticField);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static boolean testGetBooleanSnippet() {
+        UNSAFE.putShort(onHeapMemoryBase, onHeapMemoryOffset, (short) 0x0204);
+        return UNSAFE.getBoolean(onHeapMemoryBase, onHeapMemoryOffset);
+    }
+
+    @Test
+    public void testGetBoolean() {
+        test("testGetBooleanSnippet");
+    }
+
+    public static short testPutBooleanSnippet() {
+        UNSAFE.putShort(onHeapMemoryBase, onHeapMemoryOffset, (short) 0x0204);
+        boolean bool = UNSAFE.getBoolean(onHeapMemoryBase, onHeapMemoryOffset);
+        UNSAFE.putBoolean(onHeapMemoryBase, onHeapMemoryOffset, bool);
+        return onHeapMemory;
+    }
+
+    @Test
+    public void testPutBoolean() {
+        test("testPutBooleanSnippet");
+    }
+
+    public static boolean testAndBooleanSnippet() {
+        UNSAFE.putShort(onHeapMemoryBase, onHeapMemoryOffset, (short) 0x0204);
+        boolean bool0 = UNSAFE.getBoolean(onHeapMemoryBase, onHeapMemoryOffset);
+        boolean bool1 = UNSAFE.getBoolean(onHeapMemoryBase, onHeapMemoryOffset + 1);
+        return bool0 & bool1;
+    }
+
+    @Test
+    public void testAndBoolean() {
+        test("testAndBooleanSnippet");
+    }
+
+}
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/DefaultJavaLoweringProvider.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/DefaultJavaLoweringProvider.java	Wed Aug 23 11:24:50 2017 -0700
@@ -59,8 +59,10 @@
 import org.graalvm.compiler.nodes.StructuredGraph;
 import org.graalvm.compiler.nodes.ValueNode;
 import org.graalvm.compiler.nodes.calc.AddNode;
+import org.graalvm.compiler.nodes.calc.ConditionalNode;
 import org.graalvm.compiler.nodes.calc.IntegerBelowNode;
 import org.graalvm.compiler.nodes.calc.IntegerConvertNode;
+import org.graalvm.compiler.nodes.calc.IntegerEqualsNode;
 import org.graalvm.compiler.nodes.calc.IsNullNode;
 import org.graalvm.compiler.nodes.calc.LeftShiftNode;
 import org.graalvm.compiler.nodes.calc.NarrowNode;
@@ -577,7 +579,7 @@
         } else {
             memoryRead.setGuard(guard);
         }
-        ValueNode readValue = implicitLoadConvert(graph, readKind, memoryRead, compressible);
+        ValueNode readValue = performBooleanCoercionIfNecessary(implicitLoadConvert(graph, readKind, memoryRead, compressible), readKind);
         load.replaceAtUsages(readValue);
         return memoryRead;
     }
@@ -592,11 +594,20 @@
         // An unsafe read must not float otherwise it may float above
         // a test guaranteeing the read is safe.
         memoryRead.setForceFixed(true);
-        ValueNode readValue = implicitLoadConvert(graph, readKind, memoryRead, false);
+        ValueNode readValue = performBooleanCoercionIfNecessary(implicitLoadConvert(graph, readKind, memoryRead, false), readKind);
         load.replaceAtUsages(readValue);
         graph.replaceFixedWithFixed(load, memoryRead);
     }
 
+    private static ValueNode performBooleanCoercionIfNecessary(ValueNode readValue, JavaKind readKind) {
+        if (readKind == JavaKind.Boolean) {
+            StructuredGraph graph = readValue.graph();
+            IntegerEqualsNode eq = graph.addOrUnique(new IntegerEqualsNode(readValue, ConstantNode.forInt(0, graph)));
+            return graph.addOrUnique(new ConditionalNode(eq, ConstantNode.forBoolean(false, graph), ConstantNode.forBoolean(true, graph)));
+        }
+        return readValue;
+    }
+
     protected void lowerUnsafeStoreNode(RawStoreNode store) {
         StructuredGraph graph = store.graph();
         boolean compressible = store.value().getStackKind() == JavaKind.Object;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/StandardGraphBuilderPlugins.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/StandardGraphBuilderPlugins.java	Wed Aug 23 11:24:50 2017 -0700
@@ -189,9 +189,7 @@
         r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", short[].class, short[].class);
         r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", char[].class, char[].class);
         r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", int[].class, int[].class);
-        r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", float[].class, float[].class);
         r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", long[].class, long[].class);
-        r.registerMethodSubstitution(ArraysSubstitutions.class, "equals", double[].class, double[].class);
     }
 
     private static void registerArrayPlugins(InvocationPlugins plugins, BytecodeProvider bytecodeProvider) {
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ArrayEqualsNode.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ArrayEqualsNode.java	Wed Aug 23 11:24:50 2017 -0700
@@ -95,11 +95,16 @@
         return length;
     }
 
+    private static boolean isNaNFloat(JavaConstant constant) {
+        JavaKind kind = constant.getJavaKind();
+        return (kind == JavaKind.Float && Float.isNaN(constant.asFloat())) || (kind == JavaKind.Double && Double.isNaN(constant.asDouble()));
+    }
+
     private static boolean arrayEquals(ConstantReflectionProvider constantReflection, JavaConstant a, JavaConstant b, int len) {
         for (int i = 0; i < len; i++) {
             JavaConstant aElem = constantReflection.readArrayElement(a, i);
             JavaConstant bElem = constantReflection.readArrayElement(b, i);
-            if (!constantReflection.constantEquals(aElem, bElem)) {
+            if (!constantReflection.constantEquals(aElem, bElem) && !(isNaNFloat(aElem) && isNaNFloat(bElem))) {
                 return false;
             }
         }
@@ -145,8 +150,28 @@
                     ValueNode entry1 = tool.getEntry(virtual1, i);
                     ValueNode entry2 = tool.getEntry(virtual2, i);
                     if (entry1 != entry2) {
-                        // the contents might be different
-                        allEqual = false;
+                        if (entry1 instanceof ConstantNode && entry2 instanceof ConstantNode) {
+                            // Float NaN constants are different constant nodes but treated as
+                            // equal in Arrays.equals([F[F) or Arrays.equals([D[D).
+                            if (entry1.getStackKind() == JavaKind.Float && entry2.getStackKind() == JavaKind.Float) {
+                                float value1 = ((JavaConstant) ((ConstantNode) entry1).asConstant()).asFloat();
+                                float value2 = ((JavaConstant) ((ConstantNode) entry2).asConstant()).asFloat();
+                                if (Float.floatToIntBits(value1) != Float.floatToIntBits(value2)) {
+                                    allEqual = false;
+                                }
+                            } else if (entry1.getStackKind() == JavaKind.Double && entry2.getStackKind() == JavaKind.Double) {
+                                double value1 = ((JavaConstant) ((ConstantNode) entry1).asConstant()).asDouble();
+                                double value2 = ((JavaConstant) ((ConstantNode) entry2).asConstant()).asDouble();
+                                if (Double.doubleToLongBits(value1) != Double.doubleToLongBits(value2)) {
+                                    allEqual = false;
+                                }
+                            } else {
+                                allEqual = false;
+                            }
+                        } else {
+                            // the contents might be different
+                            allEqual = false;
+                        }
                     }
                     if (entry1.stamp().alwaysDistinct(entry2.stamp())) {
                         // the contents are different
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ExplodeLoopNode.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/ExplodeLoopNode.java	Wed Aug 23 11:24:50 2017 -0700
@@ -57,7 +57,7 @@
             for (Node n : currentNext.cfgSuccessors()) {
                 succs.add(n);
             }
-            if (succs.size() == 1) {
+            if (succs.size() == 1 && succs.get(0) != currentNext) {
                 currentNext = succs.get(0);
             } else {
                 return null;
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/IntegerMulHighNode.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/IntegerMulHighNode.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,69 +25,28 @@
 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2;
 
-import java.util.function.BiFunction;
-
-import org.graalvm.compiler.core.common.type.IntegerStamp;
-import org.graalvm.compiler.core.common.type.Stamp;
-import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.MulHigh;
 import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable;
 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
 import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
 import org.graalvm.compiler.nodeinfo.NodeInfo;
 import org.graalvm.compiler.nodes.ConstantNode;
 import org.graalvm.compiler.nodes.ValueNode;
-import org.graalvm.compiler.nodes.calc.BinaryNode;
-import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable;
+import org.graalvm.compiler.nodes.calc.BinaryArithmeticNode;
 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
 
-import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.Constant;
+import jdk.vm.ci.meta.PrimitiveConstant;
 import jdk.vm.ci.meta.Value;
 
 @NodeInfo(shortName = "*H", cycles = CYCLES_2, size = SIZE_2)
-public final class IntegerMulHighNode extends BinaryNode implements ArithmeticLIRLowerable {
+public final class IntegerMulHighNode extends BinaryArithmeticNode<MulHigh> implements Canonicalizable.BinaryCommutative<ValueNode> {
     public static final NodeClass<IntegerMulHighNode> TYPE = NodeClass.create(IntegerMulHighNode.class);
 
     public IntegerMulHighNode(ValueNode x, ValueNode y) {
-        this((IntegerStamp) x.stamp().unrestricted(), x, y);
-    }
-
-    public IntegerMulHighNode(IntegerStamp stamp, ValueNode x, ValueNode y) {
-        super(TYPE, stamp, x, y);
-    }
-
-    /**
-     * Determines the minimum and maximum result of this node for the given inputs and returns the
-     * result of the given BiFunction on the minimum and maximum values.
-     */
-    private <T> T processExtremes(Stamp forX, Stamp forY, BiFunction<Long, Long, T> op) {
-        IntegerStamp xStamp = (IntegerStamp) forX;
-        IntegerStamp yStamp = (IntegerStamp) forY;
-
-        JavaKind kind = getStackKind();
-        assert kind == JavaKind.Int || kind == JavaKind.Long;
-        long[] xExtremes = {xStamp.lowerBound(), xStamp.upperBound()};
-        long[] yExtremes = {yStamp.lowerBound(), yStamp.upperBound()};
-        long min = Long.MAX_VALUE;
-        long max = Long.MIN_VALUE;
-        for (long a : xExtremes) {
-            for (long b : yExtremes) {
-                long result = kind == JavaKind.Int ? multiplyHigh((int) a, (int) b) : multiplyHigh(a, b);
-                min = Math.min(min, result);
-                max = Math.max(max, result);
-            }
-        }
-        return op.apply(min, max);
-    }
-
-    @Override
-    public Stamp foldStamp(Stamp stampX, Stamp stampY) {
-        return processExtremes(stampX, stampY, (min, max) -> StampFactory.forInteger(getStackKind(), min, max));
-    }
-
-    @SuppressWarnings("cast")
-    @Override
-    public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) {
-        return processExtremes(forX.stamp(), forY.stamp(), (min, max) -> min == (long) max ? ConstantNode.forIntegerKind(getStackKind(), min) : this);
+        super(TYPE, ArithmeticOpTable::getMulHigh, x, y);
     }
 
     @Override
@@ -97,29 +56,35 @@
         nodeValueMap.setResult(this, gen.emitMulHigh(a, b));
     }
 
-    public static int multiplyHigh(int x, int y) {
-        long r = (long) x * (long) y;
-        return (int) (r >> 32);
+    @Override
+    public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) {
+        ValueNode ret = super.canonical(tool, forX, forY);
+        if (ret != this) {
+            return ret;
+        }
+
+        if (forX.isConstant() && !forY.isConstant()) {
+            // we try to swap and canonicalize
+            ValueNode improvement = canonical(tool, forY, forX);
+            if (improvement != this) {
+                return improvement;
+            }
+            // if this fails we only swap
+            return new IntegerMulHighNode(forY, forX);
+        }
+        return canonical(this, forY);
     }
 
-    public static long multiplyHigh(long x, long y) {
-        // Checkstyle: stop
-        long x0, y0, z0;
-        long x1, y1, z1, z2, t;
-        // Checkstyle: resume
-
-        x0 = x & 0xFFFFFFFFL;
-        x1 = x >> 32;
-
-        y0 = y & 0xFFFFFFFFL;
-        y1 = y >> 32;
-
-        z0 = x0 * y0;
-        t = x1 * y0 + (z0 >>> 32);
-        z1 = t & 0xFFFFFFFFL;
-        z2 = t >> 32;
-        z1 += x0 * y1;
-
-        return x1 * y1 + z2 + (z1 >> 32);
+    private static ValueNode canonical(IntegerMulHighNode self, ValueNode forY) {
+        if (forY.isConstant()) {
+            Constant c = forY.asConstant();
+            if (c instanceof PrimitiveConstant && ((PrimitiveConstant) c).getJavaKind().isNumericInteger()) {
+                long i = ((PrimitiveConstant) c).asLong();
+                if (i == 0 || i == 1) {
+                    return ConstantNode.forIntegerStamp(self.stamp(), 0);
+                }
+            }
+        }
+        return self;
     }
 }
--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/UnsignedMulHighNode.java	Wed Aug 23 15:47:41 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/UnsignedMulHighNode.java	Wed Aug 23 11:24:50 2017 -0700
@@ -25,86 +25,28 @@
 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2;
 
-import java.util.function.BiFunction;
-
-import org.graalvm.compiler.core.common.type.IntegerStamp;
-import org.graalvm.compiler.core.common.type.Stamp;
-import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
+import org.graalvm.compiler.core.common.type.ArithmeticOpTable.BinaryOp.UMulHigh;
 import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable;
 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
 import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
 import org.graalvm.compiler.nodeinfo.NodeInfo;
 import org.graalvm.compiler.nodes.ConstantNode;
 import org.graalvm.compiler.nodes.ValueNode;
-import org.graalvm.compiler.nodes.calc.BinaryNode;
-import org.graalvm.compiler.nodes.spi.ArithmeticLIRLowerable;
+import org.graalvm.compiler.nodes.calc.BinaryArithmeticNode;
 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
 
-import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.Constant;
+import jdk.vm.ci.meta.PrimitiveConstant;
 import jdk.vm.ci.meta.Value;
 
 @NodeInfo(shortName = "|*H|", cycles = CYCLES_2, size = SIZE_2)
-public final class UnsignedMulHighNode extends BinaryNode implements ArithmeticLIRLowerable {
-
+public final class UnsignedMulHighNode extends BinaryArithmeticNode<UMulHigh> implements Canonicalizable.BinaryCommutative<ValueNode> {
     public static final NodeClass<UnsignedMulHighNode> TYPE = NodeClass.create(UnsignedMulHighNode.class);
 
     public UnsignedMulHighNode(ValueNode x, ValueNode y) {
-        this((IntegerStamp) x.stamp().unrestricted(), x, y);
-    }
-
-    public UnsignedMulHighNode(IntegerStamp stamp, ValueNode x, ValueNode y) {
-        super(TYPE, stamp, x, y);
-    }
-
-    private static long[] getUnsignedExtremes(IntegerStamp stamp) {
-        if (stamp.lowerBound() < 0 && stamp.upperBound() >= 0) {
-            /*
-             * If -1 and 0 are both in the signed range, then we can't say anything about the
-             * unsigned range, so we have to return [0, MAX_UNSIGNED].
-             */
-            return new long[]{0, -1L};
-        } else {
-            return new long[]{stamp.lowerBound(), stamp.upperBound()};
-        }
-    }
-
-    /**
-     * Determines the minimum and maximum result of this node for the given inputs and returns the
-     * result of the given BiFunction on the minimum and maximum values. Note that the minima and
-     * maxima are calculated using signed min/max functions, while the values themselves are
-     * unsigned.
-     */
-    private <T> T processExtremes(Stamp forX, Stamp forY, BiFunction<Long, Long, T> op) {
-        IntegerStamp xStamp = (IntegerStamp) forX;
-        IntegerStamp yStamp = (IntegerStamp) forY;
-
-        JavaKind kind = getStackKind();
-        assert kind == JavaKind.Int || kind == JavaKind.Long;
-        long[] xExtremes = getUnsignedExtremes(xStamp);
-        long[] yExtremes = getUnsignedExtremes(yStamp);
-        long min = Long.MAX_VALUE;
-        long max = Long.MIN_VALUE;
-        for (long a : xExtremes) {
-            for (long b : yExtremes) {
-                long result = kind == JavaKind.Int ? multiplyHighUnsigned((int) a, (int) b) : multiplyHighUnsigned(a, b);
-                min = Math.min(min, result);
-                max = Math.max(max, result);
-            }
-        }
-        return op.apply(min, max);
-    }
-
-    @SuppressWarnings("cast")
-    @Override
-    public Stamp foldStamp(Stamp stampX, Stamp stampY) {
-        // if min is negative, then the value can reach into the unsigned range
-        return processExtremes(stampX, stampY, (min, max) -> (min == (long) max || min >= 0) ? StampFactory.forInteger(getStackKind(), min, max) : StampFactory.forKind(getStackKind()));
-    }
-
-    @SuppressWarnings("cast")
-    @Override
-    public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) {
-        return processExtremes(forX.stamp(), forY.stamp(), (min, max) -> min == (long) max ? ConstantNode.forIntegerKind(getStackKind(), min) : this);
+        super(TYPE, ArithmeticOpTable::getUMulHigh, x, y);
     }
 
     @Override
@@ -114,31 +56,35 @@
         nodeValueMap.setResult(this, gen.emitUMulHigh(a, b));
     }
 
-    public static int multiplyHighUnsigned(int x, int y) {
-        long xl = x & 0xFFFFFFFFL;
-        long yl = y & 0xFFFFFFFFL;
-        long r = xl * yl;
-        return (int) (r >> 32);
+    @Override
+    public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) {
+        ValueNode ret = super.canonical(tool, forX, forY);
+        if (ret != this) {
+            return ret;
+        }
+
+        if (forX.isConstant() && !forY.isConstant()) {
+            // we try to swap and canonicalize
+            ValueNode improvement = canonical(tool, forY, forX);
+            if (improvement != this) {
+                return improvement;
+            }
+            // if this fails we only swap
+            return new UnsignedMulHighNode(forY, forX);
+        }
+        return canonical(this, forY);
     }
 
-    public static long multiplyHighUnsigned(long x, long y) {
-        // Checkstyle: stop
-        long x0, y0, z0;
-        long x1, y1, z1, z2, t;
-        // Checkstyle: resume
-
-        x0 = x & 0xFFFFFFFFL;
-        x1 = x >>> 32;
-
-        y0 = y & 0xFFFFFFFFL;
-        y1 = y >>> 32;
-
-        z0 = x0 * y0;
-        t = x1 * y0 + (z0 >>> 32);
-        z1 = t & 0xFFFFFFFFL;
-        z2 = t >>> 32;
-        z1 += x0 * y1;
-
-        return x1 * y1 + z2 + (z1 >>> 32);
+    private static ValueNode canonical(UnsignedMulHighNode self, ValueNode forY) {
+        if (forY.isConstant()) {
+            Constant c = forY.asConstant();
+            if (c instanceof PrimitiveConstant && ((PrimitiveConstant) c).getJavaKind().isNumericInteger()) {
+                long i = ((PrimitiveConstant) c).asLong();
+                if (i == 0 || i == 1) {
+                    return ConstantNode.forIntegerStamp(self.stamp(), 0);
+                }
+            }
+        }
+        return self;
     }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.micro.benchmarks/src/micro/benchmarks/TestJMHBlackbox.java	Wed Aug 23 11:24:50 2017 -0700
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package micro.benchmarks;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Warmup;
+
+@Warmup(iterations = 1)
+@Measurement(iterations = 1)
+@Fork(1)
+/**
+ * This dummy class is used to verify that the JMH microbenchmarking environment is set up properly.
+ */
+public class TestJMHBlackbox {
+
+    @Benchmark
+    public void testJMH() {
+        // This method was intentionally left blank.
+    }
+
+}