changeset 26513:12198895df07

Merge
author lana
date Thu, 11 Sep 2014 14:30:00 -0700
parents 29d597edef7c f3d4b01ac41e
children 5332d7d44bb0
files nashorn/test/script/basic/JDK-8048079_1.js nashorn/test/script/basic/JDK-8048079_1.js.EXPECTED nashorn/test/script/basic/JDK-8048079_2.js nashorn/test/script/basic/JDK-8048079_2.js.EXPECTED
diffstat 82 files changed, 1852 insertions(+), 434 deletions(-) [+]
line wrap: on
line diff
--- a/nashorn/.hgignore	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/.hgignore	Thu Sep 11 14:30:00 2014 -0700
@@ -6,8 +6,7 @@
 /nbproject/private/
 private.xml
 private.properties
-webrev/*
-webrev.zip
+^webrev
 .classpath
 *.class
 *.clazz
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/AssignSymbols.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/AssignSymbols.java	Thu Sep 11 14:30:00 2014 -0700
@@ -194,12 +194,12 @@
      */
     private void acceptDeclarations(final FunctionNode functionNode, final Block body) {
         // This visitor will assign symbol to all declared variables, except "var" declarations in for loop initializers.
-        //
         body.accept(new NodeVisitor<LexicalContext>(new LexicalContext()) {
             @Override
-            public boolean enterFunctionNode(final FunctionNode nestedFn) {
-                // Don't descend into nested functions
-                return false;
+            protected boolean enterDefault(final Node node) {
+                // Don't bother visiting expressions; var is a statement, it can't be inside an expression.
+                // This will also prevent visiting nested functions (as FunctionNode is an expression).
+                return !(node instanceof Expression);
             }
 
             @Override
@@ -443,12 +443,27 @@
 
         if (lc.isFunctionBody()) {
             block.clearSymbols();
+            final FunctionNode fn = lc.getCurrentFunction();
+            if (isUnparsedFunction(fn)) {
+                // It's a skipped nested function. Just mark the symbols being used by it as being in use.
+                for(final String name: compiler.getScriptFunctionData(fn.getId()).getExternalSymbolNames()) {
+                    nameIsUsed(name, null);
+                }
+                // Don't bother descending into it, it must be empty anyway.
+                assert block.getStatements().isEmpty();
+                return false;
+            }
+
             enterFunctionBody();
         }
 
         return true;
     }
 
+    private boolean isUnparsedFunction(final FunctionNode fn) {
+        return compiler.isOnDemandCompilation() && fn != lc.getOutermostFunction();
+    }
+
     @Override
     public boolean enterCatchNode(final CatchNode catchNode) {
         final IdentNode exception = catchNode.getException();
@@ -492,18 +507,13 @@
 
     @Override
     public boolean enterFunctionNode(final FunctionNode functionNode) {
-        // TODO: once we have information on symbols used by nested functions, we can stop descending into nested
-        // functions with on-demand compilation, e.g. add
-        // if(!thisProperties.isEmpty() && env.isOnDemandCompilation()) {
-        //    return false;
-        // }
         start(functionNode, false);
 
         thisProperties.push(new HashSet<String>());
 
-        //an outermost function in our lexical context that is not a program
-        //is possible - it is a function being compiled lazily
         if (functionNode.isDeclared()) {
+            // Can't use lc.getCurrentBlock() as we can have an outermost function in our lexical context that
+            // is not a program - it is a function being compiled on-demand.
             final Iterator<Block> blocks = lc.getBlocks();
             if (blocks.hasNext()) {
                 final IdentNode ident = functionNode.getIdent();
@@ -511,6 +521,11 @@
             }
         }
 
+        // Every function has a body, even the ones skipped on reparse (they have an empty one). We're
+        // asserting this as even for those, enterBlock() must be invoked to correctly process symbols that
+        // are used in them.
+        assert functionNode.getBody() != null;
+
         return true;
     }
 
@@ -533,7 +548,7 @@
 
     /**
      * This has to run before fix assignment types, store any type specializations for
-     * paramters, then turn then to objects for the generic version of this method
+     * parameters, then turn them into objects for the generic version of this method.
      *
      * @param functionNode functionNode
      */
@@ -733,14 +748,20 @@
 
     @Override
     public Node leaveBlock(final Block block) {
-        // It's not necessary to guard the marking of symbols as locals with this "if"condition for correctness, it's
-        // just an optimization -- runtime type calculation is not used when the compilation is not an on-demand
-        // optimistic compilation, so we can skip locals marking then.
+        // It's not necessary to guard the marking of symbols as locals with this "if" condition for
+        // correctness, it's just an optimization -- runtime type calculation is not used when the compilation
+        // is not an on-demand optimistic compilation, so we can skip locals marking then.
         if (compiler.useOptimisticTypes() && compiler.isOnDemandCompilation()) {
-            for (final Symbol symbol: block.getSymbols()) {
-                if (!symbol.isScope()) {
-                    assert symbol.isVar() || symbol.isParam();
-                    compiler.declareLocalSymbol(symbol.getName());
+            // OTOH, we must not declare symbols from nested functions to be locals. As we're doing on-demand
+            // compilation, and we're skipping parsing the function bodies for nested functions, this
+            // basically only means their parameters. It'd be enough to mistakenly declare to be a local a
+            // symbol in the outer function named the same as one of the parameters, though.
+            if (lc.getFunction(block) == lc.getOutermostFunction()) {
+                for (final Symbol symbol: block.getSymbols()) {
+                    if (!symbol.isScope()) {
+                        assert symbol.isVar() || symbol.isParam();
+                        compiler.declareLocalSymbol(symbol.getName());
+                    }
                 }
             }
         }
@@ -811,24 +832,45 @@
 
     @Override
     public Node leaveFunctionNode(final FunctionNode functionNode) {
-
-        return markProgramBlock(
+        final FunctionNode finalizedFunction;
+        if (isUnparsedFunction(functionNode)) {
+            finalizedFunction = functionNode;
+        } else {
+            finalizedFunction =
+               markProgramBlock(
                removeUnusedSlots(
                createSyntheticInitializers(
                finalizeParameters(
                        lc.applyTopFlags(functionNode))))
-                       .setThisProperties(lc, thisProperties.pop().size())
-                       .setState(lc, CompilationState.SYMBOLS_ASSIGNED));
+                       .setThisProperties(lc, thisProperties.pop().size()));
+        }
+        return finalizedFunction.setState(lc, CompilationState.SYMBOLS_ASSIGNED);
     }
 
     @Override
     public Node leaveIdentNode(final IdentNode identNode) {
-        final String name = identNode.getName();
-
         if (identNode.isPropertyName()) {
             return identNode;
         }
 
+        final Symbol symbol = nameIsUsed(identNode.getName(), identNode);
+
+        if (!identNode.isInitializedHere()) {
+            symbol.increaseUseCount();
+        }
+
+        IdentNode newIdentNode = identNode.setSymbol(symbol);
+
+        // If a block-scoped var is used before its declaration mark it as dead.
+        // We can only statically detect this for local vars, cross-function symbols require runtime checks.
+        if (symbol.isBlockScoped() && !symbol.hasBeenDeclared() && !identNode.isDeclaredHere() && isLocal(lc.getCurrentFunction(), symbol)) {
+            newIdentNode = newIdentNode.markDead();
+        }
+
+        return end(newIdentNode);
+    }
+
+    private Symbol nameIsUsed(final String name, final IdentNode origin) {
         final Block block = lc.getCurrentBlock();
 
         Symbol symbol = findSymbol(block, name);
@@ -847,24 +889,11 @@
             maybeForceScope(symbol);
         } else {
             log.info("No symbol exists. Declare as global: ", name);
-            symbol = defineSymbol(block, name, identNode, IS_GLOBAL | IS_SCOPE);
+            symbol = defineSymbol(block, name, origin, IS_GLOBAL | IS_SCOPE);
         }
 
         functionUsesSymbol(symbol);
-
-        if (!identNode.isInitializedHere()) {
-            symbol.increaseUseCount();
-        }
-
-        IdentNode newIdentNode = identNode.setSymbol(symbol);
-
-        // If a block-scoped var is used before its declaration mark it as dead.
-        // We can only statically detect this for local vars, cross-function symbols require runtime checks.
-        if (symbol.isBlockScoped() && !symbol.hasBeenDeclared() && !identNode.isDeclaredHere() && isLocal(lc.getCurrentFunction(), symbol)) {
-            newIdentNode = newIdentNode.markDead();
-        }
-
-        return end(newIdentNode);
+        return symbol;
     }
 
     @Override
@@ -912,7 +941,6 @@
             return functionNode;
         }
 
-        assert functionNode.getId() == 1;
         return functionNode.setBody(lc, functionNode.getBody().setFlag(lc, Block.IS_GLOBAL_SCOPE));
     }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ClassEmitter.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ClassEmitter.java	Thu Sep 11 14:30:00 2014 -0700
@@ -59,6 +59,7 @@
 import java.util.EnumSet;
 import java.util.HashSet;
 import java.util.Set;
+
 import jdk.internal.org.objectweb.asm.ClassWriter;
 import jdk.internal.org.objectweb.asm.MethodVisitor;
 import jdk.internal.org.objectweb.asm.util.TraceClassVisitor;
@@ -135,6 +136,16 @@
     /** Set of constants access methods required. */
     private Set<Class<?>> constantMethodNeeded;
 
+    private int methodCount;
+
+    private int initCount;
+
+    private int clinitCount;
+
+    private int fieldCount;
+
+    private final Set<String> methodNames;
+
     /**
      * Constructor - only used internally in this class as it breaks
      * abstraction towards ASM or other code generator below
@@ -146,6 +157,11 @@
         this.context        = context;
         this.cw             = cw;
         this.methodsStarted = new HashSet<>();
+        this.methodNames    = new HashSet<>();
+    }
+
+    public Set<String> getMethodNames() {
+        return methodNames;
     }
 
     /**
@@ -209,6 +225,38 @@
     }
 
     /**
+     * Get the method count, including init and clinit methods
+     * @return method count
+     */
+    public int getMethodCount() {
+        return methodCount;
+    }
+
+    /**
+     * Get the clinit count
+     * @return clinit count
+     */
+    public int getClinitCount() {
+        return clinitCount;
+    }
+
+    /**
+     * Get the init count
+     * @return init count
+     */
+    public int getInitCount() {
+        return initCount;
+    }
+
+    /**
+     * Get the field count
+     * @return field count
+     */
+    public int getFieldCount() {
+        return fieldCount;
+    }
+
+    /**
      * Convert a binary name to a package/class name.
      *
      * @param name Binary name.
@@ -359,9 +407,16 @@
      */
     @Override
     public void end() {
-        assert classStarted;
+        assert classStarted : "class not started for " + unitClassName;
 
         if (unitClassName != null) {
+            final MethodEmitter initMethod = init(EnumSet.of(Flag.PRIVATE));
+            initMethod.begin();
+            initMethod.load(Type.OBJECT, 0);
+            initMethod.newInstance(jdk.nashorn.internal.scripts.JS.class);
+            initMethod.returnVoid();
+            initMethod.end();
+
             defineCommonUtilities();
         }
 
@@ -419,6 +474,8 @@
     }
 
     SplitMethodEmitter method(final SplitNode splitNode, final String methodName, final Class<?> rtype, final Class<?>... ptypes) {
+        methodCount++;
+        methodNames.add(methodName);
         return new SplitMethodEmitter(this, methodVisitor(EnumSet.of(Flag.PUBLIC, Flag.STATIC), methodName, rtype, ptypes), splitNode);
     }
 
@@ -446,6 +503,8 @@
      * @return method emitter to use for weaving this method
      */
     MethodEmitter method(final EnumSet<Flag> methodFlags, final String methodName, final Class<?> rtype, final Class<?>... ptypes) {
+        methodCount++;
+        methodNames.add(methodName);
         return new MethodEmitter(this, methodVisitor(methodFlags, methodName, rtype, ptypes));
     }
 
@@ -471,6 +530,8 @@
      * @return method emitter to use for weaving this method
      */
     MethodEmitter method(final EnumSet<Flag> methodFlags, final String methodName, final String descriptor) {
+        methodCount++;
+        methodNames.add(methodName);
         return new MethodEmitter(this, cw.visitMethod(Flag.getValue(methodFlags), methodName, descriptor, null, null));
     }
 
@@ -481,6 +542,8 @@
      * @return method emitter to use for weaving this method
      */
     MethodEmitter method(final FunctionNode functionNode) {
+        methodCount++;
+        methodNames.add(functionNode.getName());
         final FunctionSignature signature = new FunctionSignature(functionNode);
         final MethodVisitor mv = cw.visitMethod(
             ACC_PUBLIC | ACC_STATIC | (functionNode.isVarArg() ? ACC_VARARGS : 0),
@@ -499,6 +562,8 @@
      * @return method emitter to use for weaving this method
      */
     MethodEmitter restOfMethod(final FunctionNode functionNode) {
+        methodCount++;
+        methodNames.add(functionNode.getName());
         final MethodVisitor mv = cw.visitMethod(
             ACC_PUBLIC | ACC_STATIC,
             functionNode.getName(),
@@ -516,6 +581,7 @@
      * @return method emitter to use for weaving <clinit>
      */
     MethodEmitter clinit() {
+        clinitCount++;
         return method(EnumSet.of(Flag.STATIC), CLINIT.symbolName(), void.class);
     }
 
@@ -525,6 +591,7 @@
      * @return method emitter to use for weaving <init>()V
      */
     MethodEmitter init() {
+        initCount++;
         return method(INIT.symbolName(), void.class);
     }
 
@@ -535,6 +602,7 @@
      * @return method emitter to use for weaving <init>()V
      */
     MethodEmitter init(final Class<?>... ptypes) {
+        initCount++;
         return method(INIT.symbolName(), void.class, ptypes);
     }
 
@@ -547,6 +615,7 @@
      * @return method emitter to use for weaving <init>(...)V
      */
     MethodEmitter init(final EnumSet<Flag> flags, final Class<?>... ptypes) {
+        initCount++;
         return method(flags, INIT.symbolName(), void.class, ptypes);
     }
 
@@ -561,6 +630,7 @@
      * @see ClassEmitter.Flag
      */
     final void field(final EnumSet<Flag> fieldFlags, final String fieldName, final Class<?> fieldType, final Object value) {
+        fieldCount++;
         cw.visitField(Flag.getValue(fieldFlags), fieldName, typeDescriptor(fieldType), null, value).visitEnd();
     }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGenerator.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGenerator.java	Thu Sep 11 14:30:00 2014 -0700
@@ -1622,9 +1622,18 @@
 
             @Override
             protected void evaluate() {
-                method.load(ITERATOR_TYPE, iterSlot);
-                // TODO: optimistic for-in iteration
-                method.invoke(interfaceCallNoLookup(ITERATOR_CLASS, "next", Object.class));
+                new OptimisticOperation((Optimistic)forNode.getInit(), TypeBounds.UNBOUNDED) {
+                    @Override
+                    void loadStack() {
+                        method.load(ITERATOR_TYPE, iterSlot);
+                    }
+
+                    @Override
+                    void consumeStack() {
+                        method.invoke(interfaceCallNoLookup(ITERATOR_CLASS, "next", Object.class));
+                        convertOptimisticReturnValue();
+                    }
+                }.emit();
             }
         }.store();
         body.accept(this);
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGeneratorLexicalContext.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGeneratorLexicalContext.java	Thu Sep 11 14:30:00 2014 -0700
@@ -31,6 +31,7 @@
 import java.util.Deque;
 import java.util.HashMap;
 import java.util.Map;
+
 import jdk.nashorn.internal.IntDeque;
 import jdk.nashorn.internal.codegen.types.Type;
 import jdk.nashorn.internal.ir.Block;
@@ -158,7 +159,9 @@
 
     CompileUnit popCompileUnit(final CompileUnit oldUnit) {
         assert compileUnits.peek() == oldUnit;
-        compileUnits.pop();
+        final CompileUnit unit = compileUnits.pop();
+        assert unit.hasCode() : "compile unit popped without code";
+        unit.setUsed();
         return compileUnits.isEmpty() ? null : compileUnits.peek();
     }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompilationPhase.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompilationPhase.java	Thu Sep 11 14:30:00 2014 -0700
@@ -48,6 +48,7 @@
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+
 import jdk.nashorn.internal.AssertsEnabled;
 import jdk.nashorn.internal.codegen.Compiler.CompilationPhases;
 import jdk.nashorn.internal.ir.FunctionNode;
@@ -300,6 +301,7 @@
         }
     },
 
+
     /**
      * Reuse compile units, if they are already present. We are using the same compiler
      * to recompile stuff
@@ -334,6 +336,8 @@
                 if (phases.isRestOfCompilation()) {
                     sb.append("$restOf");
                 }
+                //it's ok to not copy the initCount, methodCount and clinitCount here, as codegen is what
+                //fills those out anyway. Thus no need for a copy constructor
                 final CompileUnit newUnit = compiler.createCompileUnit(sb.toString(), oldUnit.getWeight());
                 log.fine("Creating new compile unit ", oldUnit, " => ", newUnit);
                 map.put(oldUnit, newUnit);
@@ -430,8 +434,14 @@
 
             FunctionNode newFunctionNode = fn;
 
+            //root class is special, as it is bootstrapped from createProgramFunction, thus it's skipped
+            //in CodeGeneration - the rest can be used as a working "is compile unit used" metric
+            fn.getCompileUnit().setUsed();
+
             compiler.getLogger().fine("Starting bytecode generation for ", quote(fn.getName()), " - restOf=", phases.isRestOfCompilation());
+
             final CodeGenerator codegen = new CodeGenerator(compiler, phases.isRestOfCompilation() ? compiler.getContinuationEntryPoints() : null);
+
             try {
                 // Explicitly set BYTECODE_GENERATED here; it can not be set in case of skipping codegen for :program
                 // in the lazy + optimistic world. See CodeGenerator.skipFunction().
@@ -455,12 +465,18 @@
                 final ClassEmitter classEmitter = compileUnit.getClassEmitter();
                 classEmitter.end();
 
+                if (!compileUnit.isUsed()) {
+                    compiler.getLogger().fine("Skipping unused compile unit ", compileUnit);
+                    continue;
+                }
+
                 final byte[] bytecode = classEmitter.toByteArray();
                 assert bytecode != null;
 
                 final String className = compileUnit.getUnitClassName();
+                compiler.addClass(className, bytecode); //classes are only added to the bytecode map if compile unit is used
 
-                compiler.addClass(className, bytecode);
+                CompileUnit.increaseEmitCount();
 
                 // should we verify the generated code?
                 if (senv._verify_code) {
@@ -536,6 +552,9 @@
 
             // initialize function in the compile units
             for (final CompileUnit unit : compiler.getCompileUnits()) {
+                if (!unit.isUsed()) {
+                    continue;
+                }
                 unit.setCode(installedClasses.get(unit.getUnitClassName()));
             }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompileUnit.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CompileUnit.java	Thu Sep 11 14:30:00 2014 -0700
@@ -42,6 +42,10 @@
 
     private Class<?> clazz;
 
+    private boolean isUsed;
+
+    private static int emittedUnitCount;
+
     CompileUnit(final String className, final ClassEmitter classEmitter, final long initialWeight) {
         this.className    = className;
         this.weight       = initialWeight;
@@ -52,6 +56,33 @@
         return new TreeSet<>();
     }
 
+    static void increaseEmitCount() {
+        emittedUnitCount++;
+    }
+
+    public static int getEmittedUnitCount() {
+        return emittedUnitCount;
+    }
+
+    /**
+     * Check if this compile unit is used
+     * @return true if tagged as in use - i.e active code that needs to be generated
+     */
+    public boolean isUsed() {
+        return isUsed;
+    }
+
+    public boolean hasCode() {
+        return (classEmitter.getMethodCount() - classEmitter.getInitCount() - classEmitter.getClinitCount()) > 0;
+    }
+
+    /**
+     * Tag this compile unit as used
+     */
+    public void setUsed() {
+        this.isUsed = true;
+    }
+
     /**
      * Return the class that contains the code for this unit, null if not
      * generated yet
@@ -121,7 +152,8 @@
 
     @Override
     public String toString() {
-        return "[CompileUnit className=" + shortName(className) + " weight=" + weight + '/' + Splitter.SPLIT_THRESHOLD + ']';
+        final String methods = classEmitter != null ? classEmitter.getMethodNames().toString() : "<anon>";
+        return "[CompileUnit className=" + shortName(className) + " weight=" + weight + '/' + Splitter.SPLIT_THRESHOLD + " hasCode=" + methods + ']';
     }
 
     @Override
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Compiler.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Compiler.java	Thu Sep 11 14:30:00 2014 -0700
@@ -38,7 +38,6 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
-import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
@@ -51,8 +50,8 @@
 import java.util.function.Consumer;
 import java.util.logging.Level;
 import jdk.internal.dynalink.support.NameCodec;
-import jdk.nashorn.internal.codegen.ClassEmitter.Flag;
 import jdk.nashorn.internal.codegen.types.Type;
+import jdk.nashorn.internal.ir.Expression;
 import jdk.nashorn.internal.ir.FunctionNode;
 import jdk.nashorn.internal.ir.Optimistic;
 import jdk.nashorn.internal.ir.debug.ClassHistogramElement;
@@ -65,6 +64,7 @@
 import jdk.nashorn.internal.runtime.RecompilableScriptFunctionData;
 import jdk.nashorn.internal.runtime.ScriptEnvironment;
 import jdk.nashorn.internal.runtime.ScriptObject;
+import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.Source;
 import jdk.nashorn.internal.runtime.logging.DebugLogger;
 import jdk.nashorn.internal.runtime.logging.Loggable;
@@ -248,6 +248,15 @@
             return new CompilationPhases(desc, list.toArray(new CompilationPhase[list.size()]));
         }
 
+        @SuppressWarnings("unused") //TODO I'll use this soon
+        private CompilationPhases replace(final CompilationPhase phase, final CompilationPhase newPhase) {
+            final LinkedList<CompilationPhase> list = new LinkedList<>();
+            for (final CompilationPhase p : phases) {
+                list.add(p == phase ? newPhase : p);
+            }
+            return new CompilationPhases(desc, list.toArray(new CompilationPhase[list.size()]));
+        }
+
         private CompilationPhases addAfter(final CompilationPhase phase, final CompilationPhase newPhase) {
             final LinkedList<CompilationPhase> list = new LinkedList<>();
             for (final CompilationPhase p : phases) {
@@ -473,6 +482,19 @@
         return typeEvaluator.getOptimisticType(node);
     }
 
+    /**
+     * Returns true if the expression can be safely evaluated, and its value is an object known to always use
+     * String as the type of its property names retrieved through
+     * {@link ScriptRuntime#toPropertyIterator(Object)}. It is used to avoid optimistic assumptions about its
+     * property name types.
+     * @param expr the expression to test
+     * @return true if the expression can be safely evaluated, and its value is an object known to always use
+     * String as the type of its property iterators.
+     */
+    boolean hasStringPropertyIterator(final Expression expr) {
+        return typeEvaluator.hasStringPropertyIterator(expr);
+    }
+
     void addInvalidatedProgramPoint(final int programPoint, final Type type) {
         invalidatedProgramPoints.put(programPoint, type);
     }
@@ -675,16 +697,8 @@
     CompileUnit createCompileUnit(final String unitClassName, final long initialWeight) {
         final ClassEmitter classEmitter = new ClassEmitter(context, sourceName, unitClassName, isStrict());
         final CompileUnit  compileUnit  = new CompileUnit(unitClassName, classEmitter, initialWeight);
-
         classEmitter.begin();
 
-        final MethodEmitter initMethod = classEmitter.init(EnumSet.of(Flag.PRIVATE));
-        initMethod.begin();
-        initMethod.load(Type.OBJECT, 0);
-        initMethod.newInstance(jdk.nashorn.internal.scripts.JS.class);
-        initMethod.returnVoid();
-        initMethod.end();
-
         return compileUnit;
     }
 
@@ -722,13 +736,6 @@
         return name.replace('/', '.');
     }
 
-    RecompilableScriptFunctionData getProgram() {
-        if (compiledFunction == null) {
-            return null;
-        }
-        return compiledFunction.getProgram();
-    }
-
     RecompilableScriptFunctionData getScriptFunctionData(final int functionId) {
         return compiledFunction == null ? null : compiledFunction.getScriptFunctionData(functionId);
     }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/FindScopeDepths.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/FindScopeDepths.java	Thu Sep 11 14:30:00 2014 -0700
@@ -25,8 +25,6 @@
 
 package jdk.nashorn.internal.codegen;
 
-import static jdk.nashorn.internal.codegen.ObjectClassGenerator.getClassName;
-import static jdk.nashorn.internal.codegen.ObjectClassGenerator.getPaddedFieldCount;
 import static jdk.nashorn.internal.runtime.logging.DebugLogger.quote;
 
 import java.util.HashMap;
@@ -34,6 +32,7 @@
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
+import jdk.nashorn.internal.codegen.ObjectClassGenerator.AllocatorDescriptor;
 import jdk.nashorn.internal.ir.Block;
 import jdk.nashorn.internal.ir.FunctionNode;
 import jdk.nashorn.internal.ir.FunctionNode.CompilationState;
@@ -44,7 +43,6 @@
 import jdk.nashorn.internal.ir.WithNode;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.runtime.Context;
-import jdk.nashorn.internal.runtime.PropertyMap;
 import jdk.nashorn.internal.runtime.RecompilableScriptFunctionData;
 import jdk.nashorn.internal.runtime.logging.DebugLogger;
 import jdk.nashorn.internal.runtime.logging.Loggable;
@@ -208,14 +206,10 @@
 
         assert nestedFunctions != null;
         // Generate the object class and property map in case this function is ever used as constructor
-        final int         fieldCount         = getPaddedFieldCount(newFunctionNode.getThisProperties());
-        final String      allocatorClassName = Compiler.binaryName(getClassName(fieldCount));
-        final PropertyMap allocatorMap       = PropertyMap.newMap(null, allocatorClassName, 0, fieldCount, 0);
         final RecompilableScriptFunctionData data = new RecompilableScriptFunctionData(
                 newFunctionNode,
                 compiler.getCodeInstaller(),
-                allocatorClassName,
-                allocatorMap,
+                new AllocatorDescriptor(newFunctionNode.getThisProperties()),
                 nestedFunctions,
                 externalSymbolDepths.get(fnId),
                 internalSymbols.get(fnId)
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/LocalVariableTypesCalculator.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/LocalVariableTypesCalculator.java	Thu Sep 11 14:30:00 2014 -0700
@@ -551,13 +551,19 @@
 
         final Expression init = forNode.getInit();
         if(forNode.isForIn()) {
-            forNode.getModify().accept(this);
-            enterTestFirstLoop(forNode, null, init);
+            final JoinPredecessorExpression iterable = forNode.getModify();
+            iterable.accept(this);
+            enterTestFirstLoop(forNode, null, init,
+                    // If we're iterating over property names, and we can discern from the runtime environment
+                    // of the compilation that the object being iterated over must use strings for property
+                    // names (e.g., it is a native JS object or array), then we'll not bother trying to treat
+                    // the property names optimistically.
+                    !forNode.isForEach() && compiler.hasStringPropertyIterator(iterable.getExpression()));
         } else {
             if(init != null) {
                 init.accept(this);
             }
-            enterTestFirstLoop(forNode, forNode.getModify(), null);
+            enterTestFirstLoop(forNode, forNode.getModify(), null, false);
         }
         return false;
     }
@@ -792,7 +798,8 @@
         return false;
     }
 
-    private void enterTestFirstLoop(final LoopNode loopNode, final JoinPredecessorExpression modify, final Expression iteratorValues) {
+    private void enterTestFirstLoop(final LoopNode loopNode, final JoinPredecessorExpression modify,
+            final Expression iteratorValues, final boolean iteratorValuesAreObject) {
         final JoinPredecessorExpression test = loopNode.getTest();
         if(isAlwaysFalse(test)) {
             test.accept(this);
@@ -814,8 +821,12 @@
                 jumpToLabel(test, breakLabel);
             }
             if(iteratorValues instanceof IdentNode) {
-                // Receives iterator values; they're currently all objects (JDK-8034954).
-                onAssignment((IdentNode)iteratorValues, LvarType.OBJECT);
+                final IdentNode ident = (IdentNode)iteratorValues;
+                // Receives iterator values; the optimistic type of the iterator values is tracked on the
+                // identifier, but we override optimism if it's known that the object being iterated over will
+                // never have primitive property names.
+                onAssignment(ident, iteratorValuesAreObject ? LvarType.OBJECT :
+                    toLvarType(compiler.getOptimisticType(ident)));
             }
             final Block body = loopNode.getBody();
             body.accept(this);
@@ -955,7 +966,7 @@
         if(whileNode.isDoWhile()) {
             enterDoWhileLoop(whileNode);
         } else {
-            enterTestFirstLoop(whileNode, null, null);
+            enterTestFirstLoop(whileNode, null, null, false);
         }
         return false;
     }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Lower.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Lower.java	Thu Sep 11 14:30:00 2014 -0700
@@ -71,7 +71,6 @@
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
 import jdk.nashorn.internal.parser.Token;
 import jdk.nashorn.internal.parser.TokenType;
-import jdk.nashorn.internal.runtime.CodeInstaller;
 import jdk.nashorn.internal.runtime.Context;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.Source;
@@ -93,9 +92,6 @@
 
     private final DebugLogger log;
 
-    // needed only to get unique eval id
-    private final CodeInstaller<?> installer;
-
     /**
      * Constructor.
      */
@@ -143,7 +139,6 @@
             }
         });
 
-        this.installer = compiler.getCodeInstaller();
         this.log       = initLogger(compiler.getContext());
     }
 
@@ -566,16 +561,13 @@
     private String evalLocation(final IdentNode node) {
         final Source source = lc.getCurrentFunction().getSource();
         final int pos = node.position();
-        // Code installer is null when running with --compile-only, use 0 as id in that case
-        final long id = installer == null ? 0 : installer.getUniqueEvalId();
         return new StringBuilder().
             append(source.getName()).
             append('#').
             append(source.getLine(pos)).
             append(':').
             append(source.getColumn(pos)).
-            append("<eval>@").
-            append(id).
+            append("<eval>").
             toString();
     }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ObjectClassGenerator.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ObjectClassGenerator.java	Thu Sep 11 14:30:00 2014 -0700
@@ -308,7 +308,7 @@
         newEmptyInit(className, classEmitter);
         newAllocate(className, classEmitter);
 
-        return toByteArray(classEmitter);
+        return toByteArray(className, classEmitter);
     }
 
     /**
@@ -341,7 +341,7 @@
         initWithArguments.returnVoid();
         initWithArguments.end();
 
-        return toByteArray(classEmitter);
+        return toByteArray(className, classEmitter);
     }
 
     /**
@@ -484,15 +484,13 @@
      * @param classEmitter Open class emitter.
      * @return Byte codes for the class.
      */
-    private byte[] toByteArray(final ClassEmitter classEmitter) {
+    private byte[] toByteArray(final String className, final ClassEmitter classEmitter) {
         classEmitter.end();
 
         final byte[] code = classEmitter.toByteArray();
         final ScriptEnvironment env = context.getEnv();
 
-        if (env._print_code && env._print_code_dir == null) {
-            env.getErr().println(ClassEmitter.disassemble(code));
-        }
+        DumpBytecode.dumpBytecode(env, log, code, className);
 
         if (env._verify_code) {
             context.verify(code);
@@ -827,5 +825,45 @@
         return MH.findStatic(MethodHandles.lookup(), ObjectClassGenerator.class, name, MH.type(rtype, types));
     }
 
+    /**
+     * Describes the allocator class name and property map for a constructor function with the specified
+     * number of "this" properties that it initializes.
+     *
+     */
+    public static class AllocatorDescriptor {
+        private final String allocatorClassName;
+        private final PropertyMap allocatorMap;
 
+        /**
+         * Creates a new allocator descriptor
+         * @param thisProperties the number of "this" properties that the function initializes
+         */
+        public AllocatorDescriptor(final int thisProperties) {
+            final int paddedFieldCount = getPaddedFieldCount(thisProperties);
+            this.allocatorClassName = Compiler.binaryName(getClassName(paddedFieldCount));
+            this.allocatorMap = PropertyMap.newMap(null, allocatorClassName, 0, paddedFieldCount, 0);
+        }
+
+        /**
+         * Returns the name of the class that the function allocates
+         * @return the name of the class that the function allocates
+         */
+        public String getAllocatorClassName() {
+            return allocatorClassName;
+        }
+
+        /**
+         * Returns the allocator map for the function.
+         * @return the allocator map for the function.
+         */
+        public PropertyMap getAllocatorMap() {
+            return allocatorMap;
+        }
+
+        @Override
+        public String toString() {
+            return "AllocatorDescriptor[allocatorClassName=" + allocatorClassName + ", allocatorMap.size=" +
+                    allocatorMap.size() + "]";
+        }
+    }
 }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/TypeEvaluator.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/TypeEvaluator.java	Thu Sep 11 14:30:00 2014 -0700
@@ -55,6 +55,19 @@
         this.runtimeScope = runtimeScope;
     }
 
+    /**
+     * Returns true if the expression can be safely evaluated, and its value is an object known to always use
+     * String as the type of its property names retrieved through
+     * {@link ScriptRuntime#toPropertyIterator(Object)}. It is used to avoid optimistic assumptions about its
+     * property name types.
+     * @param expr the expression to test
+     * @return true if the expression can be safely evaluated, and its value is an object known to always use
+     * String as the type of its property iterators.
+     */
+    boolean hasStringPropertyIterator(final Expression expr) {
+        return evaluateSafely(expr) instanceof ScriptObject;
+    }
+
     Type getOptimisticType(final Optimistic node) {
         assert compiler.useOptimisticTypes();
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/Block.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/Block.java	Thu Sep 11 14:30:00 2014 -0700
@@ -277,6 +277,14 @@
     }
 
     /**
+     * Returns the number of statements in the block.
+     * @return the number of statements in the block.
+     */
+    public int getStatementCount() {
+        return statements.size();
+    }
+
+    /**
      * Returns the line number of the first statement in the block.
      * @return the line number of the first statement in the block, or -1 if the block has no statements.
      */
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/CompileUnitHolder.java	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2010, 2013, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.nashorn.internal.ir;
+
+import jdk.nashorn.internal.codegen.CompileUnit;
+
+/**
+ * Marker interface for things in the IR that can hold compile units.
+ * {@link CompileUnit}
+ */
+public interface CompileUnitHolder {
+    /**
+     * Return the compile unit held by this instance
+     * @return compile unit
+     */
+    public CompileUnit getCompileUnit();
+}
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/FunctionNode.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/FunctionNode.java	Thu Sep 11 14:30:00 2014 -0700
@@ -34,10 +34,8 @@
 
 import java.util.Collections;
 import java.util.EnumSet;
-import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
-import java.util.Set;
 import java.util.function.Function;
 import jdk.nashorn.internal.AssertsEnabled;
 import jdk.nashorn.internal.codegen.CompileUnit;
@@ -48,6 +46,7 @@
 import jdk.nashorn.internal.ir.annotations.Ignore;
 import jdk.nashorn.internal.ir.annotations.Immutable;
 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
+import jdk.nashorn.internal.runtime.RecompilableScriptFunctionData;
 import jdk.nashorn.internal.runtime.ScriptFunction;
 import jdk.nashorn.internal.runtime.Source;
 import jdk.nashorn.internal.runtime.UserAccessorProperty;
@@ -57,7 +56,7 @@
  * IR representation for function (or script.)
  */
 @Immutable
-public final class FunctionNode extends LexicalContextExpression implements Flags<FunctionNode> {
+public final class FunctionNode extends LexicalContextExpression implements Flags<FunctionNode>, CompileUnitHolder {
     /** Type used for all FunctionNodes */
     public static final Type FUNCTION_TYPE = Type.typeFor(ScriptFunction.class);
 
@@ -110,8 +109,11 @@
     /** Source of entity. */
     private final Source source;
 
-    /** Unique ID used for recompilation among other things */
-    private final int id;
+    /**
+     * Opaque object representing parser state at the end of the function. Used when reparsing outer functions
+     * to skip parsing inner functions.
+     */
+    private final Object endParserState;
 
     /** External function identifier. */
     @Ignore
@@ -256,6 +258,14 @@
     /** trace callsite values in this function? */
     public static final int IS_TRACE_VALUES    = 1 << 26;
 
+    /**
+     * Whether this function needs the callee {@link ScriptFunction} instance passed to its code as a
+     * parameter on invocation. Note that we aren't, in fact using this flag in function nodes.
+     * Rather, it is always calculated (see {@link #needsCallee()}). {@link RecompilableScriptFunctionData}
+     * will, however, cache the value of this flag.
+     */
+    public static final int NEEDS_CALLEE       = 1 << 27;
+
     /** extension callsite flags mask */
     public static final int EXTENSION_CALLSITE_FLAGS = IS_PRINT_PARSE |
         IS_PRINT_LOWER_PARSE | IS_PRINT_AST | IS_PRINT_LOWER_AST |
@@ -271,16 +281,9 @@
     /** Does this function potentially need "arguments"? Note that this is not a full test, as further negative check of REDEFINES_ARGS is needed. */
     private static final int MAYBE_NEEDS_ARGUMENTS = USES_ARGUMENTS | HAS_EVAL;
 
-    /** Does this function need the parent scope? It needs it if either it or its descendants use variables from it, or have a deep eval.
-     *  We also pessimistically need a parent scope if we have lazy children that have not yet been compiled */
+    /** Does this function need the parent scope? It needs it if either it or its descendants use variables from it, or have a deep eval. */
     private static final int NEEDS_PARENT_SCOPE = USES_ANCESTOR_SCOPE | HAS_DEEP_EVAL;
 
-    /** Used to signify "null", e.g. if someone asks for the parent of the program node */
-    public static final int NO_FUNCTION_ID = 0;
-
-    /** Where to start assigning global and unique function node ids */
-    public static final int FIRST_FUNCTION_ID = NO_FUNCTION_ID + 1;
-
     /** What is the return type of this function? */
     private Type returnType = Type.UNKNOWN;
 
@@ -288,11 +291,10 @@
      * Constructor
      *
      * @param source     the source
-     * @param id         unique id
      * @param lineNumber line number
      * @param token      token
      * @param finish     finish
-     * @param firstToken first token of the funtion node (including the function declaration)
+     * @param firstToken first token of the function node (including the function declaration)
      * @param namespace  the namespace
      * @param ident      the identifier
      * @param name       the name of the function
@@ -302,7 +304,6 @@
      */
     public FunctionNode(
         final Source source,
-        final int id,
         final int lineNumber,
         final long token,
         final int finish,
@@ -316,7 +317,6 @@
         super(token, finish);
 
         this.source           = source;
-        this.id               = id;
         this.lineNumber       = lineNumber;
         this.ident            = ident;
         this.name             = name;
@@ -331,11 +331,13 @@
         this.body             = null;
         this.thisProperties   = 0;
         this.rootClass        = null;
+        this.endParserState    = null;
     }
 
     private FunctionNode(
         final FunctionNode functionNode,
         final long lastToken,
+        Object endParserState,
         final int flags,
         final String name,
         final Type returnType,
@@ -347,6 +349,7 @@
         final Class<?> rootClass) {
         super(functionNode);
 
+        this.endParserState    = endParserState;
         this.lineNumber       = functionNode.lineNumber;
         this.flags            = flags;
         this.name             = name;
@@ -361,7 +364,6 @@
 
         // the fields below never change - they are final and assigned in constructor
         this.source          = functionNode.source;
-        this.id              = functionNode.id;
         this.ident           = functionNode.ident;
         this.namespace       = functionNode.namespace;
         this.kind            = functionNode.kind;
@@ -429,11 +431,11 @@
     }
 
     /**
-     * Get the unique ID for this function
+     * Get the unique ID for this function within the script file.
      * @return the id
      */
     public int getId() {
-        return id;
+        return position();
     }
 
     /**
@@ -535,6 +537,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -606,6 +609,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -644,15 +648,24 @@
     }
 
     /**
-     * Check if the {@code eval} keyword is used in this function
+     * Check if this function has a call expression for the identifier "eval" (that is, {@code eval(...)}).
      *
-     * @return true if {@code eval} is used
+     * @return true if {@code eval} is called.
      */
     public boolean hasEval() {
         return getFlag(HAS_EVAL);
     }
 
     /**
+     * Returns true if a function nested (directly or transitively) within this function {@link #hasEval()}.
+     *
+     * @return true if a nested function calls {@code eval}.
+     */
+    public boolean hasNestedEval() {
+        return getFlag(HAS_NESTED_EVAL);
+    }
+
+    /**
      * Get the first token for this function
      * @return the first token
      */
@@ -741,6 +754,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags |
                             (body.needsScope() ?
                                     FunctionNode.HAS_SCOPE_BLOCK :
@@ -839,6 +853,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -899,6 +914,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -911,6 +927,41 @@
     }
 
     /**
+     * Returns the end parser state for this function.
+     * @return the end parser state for this function.
+     */
+    public Object getEndParserState() {
+        return endParserState;
+    }
+
+    /**
+     * Set the end parser state for this function.
+     * @param lc lexical context
+     * @param endParserState the parser state to set
+     * @return function node or a new one if state was changed
+     */
+    public FunctionNode setEndParserState(final LexicalContext lc, final Object endParserState) {
+        if (this.endParserState == endParserState) {
+            return this;
+        }
+        return Node.replaceInLexicalContext(
+                lc,
+                this,
+                new FunctionNode(
+                        this,
+                        lastToken,
+                        endParserState,
+                        flags,
+                        name,
+                        returnType,
+                        compileUnit,
+                        compilationState,
+                        body,
+                        parameters,
+                        thisProperties, rootClass));
+    }
+
+    /**
      * Get the name of this function
      * @return the name
      */
@@ -934,6 +985,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -999,6 +1051,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -1077,6 +1130,7 @@
             new FunctionNode(
                 this,
                 lastToken,
+                endParserState,
                 flags,
                 name,
                 type,
@@ -1102,6 +1156,7 @@
      * @see Compiler
      * @return the compile unit
      */
+    @Override
     public CompileUnit getCompileUnit() {
         return compileUnit;
     }
@@ -1123,6 +1178,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
@@ -1178,6 +1234,7 @@
                 new FunctionNode(
                         this,
                         lastToken,
+                        endParserState,
                         flags,
                         name,
                         returnType,
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/LexicalContext.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/LexicalContext.java	Thu Sep 11 14:30:00 2014 -0700
@@ -351,8 +351,7 @@
     }
 
     /**
-     * Get the function for this block. If the block is itself a function
-     * this returns identity
+     * Get the function for this block.
      * @param block block for which to get function
      * @return function for block
      */
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/LiteralNode.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/LiteralNode.java	Thu Sep 11 14:30:00 2014 -0700
@@ -603,7 +603,7 @@
          * An ArrayUnit is a range in an ArrayLiteral. ArrayLiterals can
          * be split if they are too large, for bytecode generation reasons
          */
-        public static final class ArrayUnit {
+        public static final class ArrayUnit implements CompileUnitHolder {
             /** Compile unit associated with the postsets range. */
             private final CompileUnit compileUnit;
 
@@ -642,6 +642,7 @@
              * The array compile unit
              * @return array compile unit
              */
+            @Override
             public CompileUnit getCompileUnit() {
                 return compileUnit;
             }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/SplitNode.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/SplitNode.java	Thu Sep 11 14:30:00 2014 -0700
@@ -39,7 +39,7 @@
  * Node indicating code is split across classes.
  */
 @Immutable
-public class SplitNode extends LexicalContextStatement implements Labels {
+public class SplitNode extends LexicalContextStatement implements Labels, CompileUnitHolder {
     /** Split node method name. */
     private final String name;
 
@@ -116,6 +116,7 @@
      * Get the compile unit for this split node
      * @return compile unit
      */
+    @Override
     public CompileUnit getCompileUnit() {
         return compileUnit;
     }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Thu Sep 11 14:30:00 2014 -0700
@@ -631,6 +631,24 @@
     }
 
     /**
+     * Returns a method handle that creates a wrapper object for a JS primitive value.
+     *
+     * @param self receiver object
+     * @return method handle to create wrapper objects for primitive receiver
+     */
+    public static MethodHandle getPrimitiveWrapFilter(final Object self) {
+        if (self instanceof String || self instanceof ConsString) {
+            return NativeString.WRAPFILTER;
+        } else if (self instanceof Number) {
+            return NativeNumber.WRAPFILTER;
+        } else if (self instanceof Boolean) {
+            return NativeBoolean.WRAPFILTER;
+        }
+        throw new IllegalArgumentException("Unsupported primitive: " + self);
+    }
+
+
+    /**
      * Create a new empty script object
      *
      * @return the new ScriptObject
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeBoolean.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeBoolean.java	Thu Sep 11 14:30:00 2014 -0700
@@ -51,9 +51,9 @@
 public final class NativeBoolean extends ScriptObject {
     private final boolean value;
 
-    // Method handle to create an object wrapper for a primitive boolean
-    private static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeBoolean.class, Object.class));
-    // Method handle to retrieve the Boolean prototype object
+    /** Method handle to create an object wrapper for a primitive boolean. */
+    static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeBoolean.class, Object.class));
+    /** Method handle to retrieve the Boolean prototype object. */
     private static final MethodHandle PROTOFILTER = findOwnMH("protoFilter", MH.type(Object.class, Object.class));
 
     // initialized by nasgen
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeJSAdapter.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeJSAdapter.java	Thu Sep 11 14:30:00 2014 -0700
@@ -28,6 +28,7 @@
 import static jdk.nashorn.internal.lookup.Lookup.MH;
 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
+import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -697,7 +698,7 @@
                 if (methodHandle != null) {
                     return new GuardedInvocation(
                             methodHandle,
-                            testJSAdaptor(adaptee, findData.getGetter(Object.class, UnwarrantedOptimismException.INVALID_PROGRAM_POINT), findData.getOwner(), func),
+                            testJSAdaptor(adaptee, findData.getGetter(Object.class, INVALID_PROGRAM_POINT, null), findData.getOwner(), func),
                             adaptee.getProtoSwitchPoint(hook, findData.getOwner()));
                 }
              }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeNumber.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeNumber.java	Thu Sep 11 14:30:00 2014 -0700
@@ -57,9 +57,9 @@
 @ScriptClass("Number")
 public final class NativeNumber extends ScriptObject {
 
-    // Method handle to create an object wrapper for a primitive number
-    private static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeNumber.class, Object.class));
-    // Method handle to retrieve the Number prototype object
+    /** Method handle to create an object wrapper for a primitive number. */
+    static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeNumber.class, Object.class));
+    /** Method handle to retrieve the Number prototype object. */
     private static final MethodHandle PROTOFILTER = findOwnMH("protoFilter", MH.type(Object.class, Object.class));
 
     /** ECMA 15.7.3.2 largest positive finite value */
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeString.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeString.java	Thu Sep 11 14:30:00 2014 -0700
@@ -71,9 +71,9 @@
 
     private final CharSequence value;
 
-    // Method handle to create an object wrapper for a primitive string
-    private static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeString.class, Object.class));
-    // Method handle to retrieve the String prototype object
+    /** Method handle to create an object wrapper for a primitive string */
+    static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeString.class, Object.class));
+    /** Method handle to retrieve the String prototype object */
     private static final MethodHandle PROTOFILTER = findOwnMH("protoFilter", MH.type(Object.class, Object.class));
 
     // initialized by nasgen
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/AbstractParser.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/AbstractParser.java	Thu Sep 11 14:30:00 2014 -0700
@@ -326,18 +326,28 @@
     }
 
     /**
-     * Check next token and advance.
+     * Check current token and advance to the next token.
      *
      * @param expected Expected tokenType.
      *
      * @throws ParserException on unexpected token type
      */
     protected final void expect(final TokenType expected) throws ParserException {
+        expectDontAdvance(expected);
+        next();
+    }
+
+    /**
+     * Check current token, but don't advance to the next token.
+     *
+     * @param expected Expected tokenType.
+     *
+     * @throws ParserException on unexpected token type
+     */
+    protected final void expectDontAdvance(final TokenType expected) throws ParserException {
         if (type != expected) {
             throw error(expectMessage(expected));
         }
-
-        next();
     }
 
     /**
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Lexer.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Lexer.java	Thu Sep 11 14:30:00 2014 -0700
@@ -35,6 +35,7 @@
 import static jdk.nashorn.internal.parser.TokenType.ESCSTRING;
 import static jdk.nashorn.internal.parser.TokenType.EXECSTRING;
 import static jdk.nashorn.internal.parser.TokenType.FLOATING;
+import static jdk.nashorn.internal.parser.TokenType.FUNCTION;
 import static jdk.nashorn.internal.parser.TokenType.HEXADECIMAL;
 import static jdk.nashorn.internal.parser.TokenType.LBRACE;
 import static jdk.nashorn.internal.parser.TokenType.LPAREN;
@@ -85,6 +86,9 @@
     /** Type of last token added. */
     private TokenType last;
 
+    private final boolean pauseOnFunctionBody;
+    private boolean pauseOnNextLeftBrace;
+
     private static final String SPACETAB = " \t";  // ASCII space and tab
     private static final String LFCR     = "\n\r"; // line feed and carriage return (ctrl-m)
 
@@ -182,20 +186,23 @@
      * @param scripting are we in scripting mode
      */
     public Lexer(final Source source, final TokenStream stream, final boolean scripting) {
-        this(source, 0, source.getLength(), stream, scripting);
+        this(source, 0, source.getLength(), stream, scripting, false);
     }
 
     /**
-     * Contructor
+     * Constructor
      *
      * @param source    the source
      * @param start     start position in source from which to start lexing
      * @param len       length of source segment to lex
      * @param stream    token stream to lex
      * @param scripting are we in scripting mode
+     * @param pauseOnFunctionBody if true, lexer will return from {@link #lexify()} when it encounters a
+     * function body. This is used with the feature where the parser is skipping nested function bodies to
+     * avoid reading ahead unnecessarily when we skip the function bodies.
      */
 
-    public Lexer(final Source source, final int start, final int len, final TokenStream stream, final boolean scripting) {
+    public Lexer(final Source source, final int start, final int len, final TokenStream stream, final boolean scripting, final boolean pauseOnFunctionBody) {
         super(source.getContent(), 1, start, len);
         this.source      = source;
         this.stream      = stream;
@@ -203,6 +210,8 @@
         this.nested      = false;
         this.pendingLine = 1;
         this.last        = EOL;
+
+        this.pauseOnFunctionBody = pauseOnFunctionBody;
     }
 
     private Lexer(final Lexer lexer, final State state) {
@@ -216,6 +225,7 @@
         pendingLine = state.pendingLine;
         linePosition = state.linePosition;
         last = EOL;
+        pauseOnFunctionBody = false;
     }
 
     static class State extends Scanner.State {
@@ -810,6 +820,9 @@
         final int length = scanIdentifier();
         // Check to see if it is a keyword.
         final TokenType type = TokenLookup.lookupKeyword(content, start, length);
+        if (type == FUNCTION && pauseOnFunctionBody) {
+            pauseOnNextLeftBrace = true;
+        }
         // Add keyword or identifier token.
         add(type, start);
     }
@@ -1597,6 +1610,9 @@
                 // We break to let the parser decide what it is.
                 if (canStartLiteral(type)) {
                     break;
+                } else if (type == LBRACE && pauseOnNextLeftBrace) {
+                    pauseOnNextLeftBrace = false;
+                    break;
                 }
             } else if (Character.isJavaIdentifierStart(ch0) || ch0 == '\\' && ch1 == 'u') {
                 // Scan and add identifier or keyword.
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java	Thu Sep 11 14:30:00 2014 -0700
@@ -148,7 +148,7 @@
     /** to receive line information from Lexer when scanning multine literals. */
     protected final Lexer.LineInfoReceiver lineInfoReceiver;
 
-    private int nextFunctionId;
+    private RecompilableScriptFunctionData reparsedFunction;
 
     /**
      * Constructor
@@ -171,7 +171,7 @@
      * @param log debug logger if one is needed
      */
     public Parser(final ScriptEnvironment env, final Source source, final ErrorManager errors, final boolean strict, final DebugLogger log) {
-        this(env, source, errors, strict, FunctionNode.FIRST_FUNCTION_ID, 0, log);
+        this(env, source, errors, strict, 0, log);
     }
 
     /**
@@ -181,15 +181,13 @@
      * @param source  source to parse
      * @param errors  error manager
      * @param strict  parser created with strict mode enabled.
-     * @param nextFunctionId  starting value for assigning new unique ids to function nodes
      * @param lineOffset line offset to start counting lines from
      * @param log debug logger if one is needed
      */
-    public Parser(final ScriptEnvironment env, final Source source, final ErrorManager errors, final boolean strict, final int nextFunctionId, final int lineOffset, final DebugLogger log) {
+    public Parser(final ScriptEnvironment env, final Source source, final ErrorManager errors, final boolean strict, final int lineOffset, final DebugLogger log) {
         super(source, errors, strict, lineOffset);
         this.env = env;
         this.namespace = new Namespace(env.getNamespace());
-        this.nextFunctionId    = nextFunctionId;
         this.scripting = env._scripting;
         if (this.scripting) {
             this.lineInfoReceiver = new Lexer.LineInfoReceiver() {
@@ -228,6 +226,16 @@
     }
 
     /**
+     * Sets the {@link RecompilableScriptFunctionData} representing the function being reparsed (when this
+     * parser instance is used to reparse a previously parsed function, as part of its on-demand compilation).
+     * This will trigger various special behaviors, such as skipping nested function bodies.
+     * @param reparsedFunction the function being reparsed.
+     */
+    public void setReparsedFunction(final RecompilableScriptFunctionData reparsedFunction) {
+        this.reparsedFunction = reparsedFunction;
+    }
+
+    /**
      * Execute parse and return the resulting function node.
      * Errors will be thrown and the error manager will contain information
      * if parsing should fail
@@ -264,7 +272,7 @@
 
         try {
             stream = new TokenStream();
-            lexer  = new Lexer(source, startPos, len, stream, scripting && !env._no_syntax_extensions);
+            lexer  = new Lexer(source, startPos, len, stream, scripting && !env._no_syntax_extensions, reparsedFunction != null);
             lexer.line = lexer.pendingLine = lineOffset + 1;
             line = lineOffset;
 
@@ -472,7 +480,6 @@
         final FunctionNode functionNode =
             new FunctionNode(
                 source,
-                nextFunctionId++,
                 functionLine,
                 token,
                 Token.descPosition(token),
@@ -2828,10 +2835,14 @@
         FunctionNode functionNode = null;
         long lastToken = 0L;
 
+        final boolean parseBody;
+        Object endParserState = null;
         try {
             // Create a new function block.
             functionNode = newFunctionNode(firstToken, ident, parameters, kind, functionLine);
-
+            assert functionNode != null;
+            final int functionId = functionNode.getId();
+            parseBody = reparsedFunction == null || functionId <= reparsedFunction.getFunctionNodeId();
             // Nashorn extension: expression closures
             if (!env._no_syntax_extensions && type != LBRACE) {
                 /*
@@ -2847,34 +2858,143 @@
                 assert lc.getCurrentBlock() == lc.getFunctionBody(functionNode);
                 // EOL uses length field to store the line number
                 final int lastFinish = Token.descPosition(lastToken) + (Token.descType(lastToken) == EOL ? 0 : Token.descLength(lastToken));
-                final ReturnNode returnNode = new ReturnNode(functionNode.getLineNumber(), expr.getToken(), lastFinish, expr);
-                appendStatement(returnNode);
+                // Only create the return node if we aren't skipping nested functions. Note that we aren't
+                // skipping parsing of these extended functions; they're considered to be small anyway. Also,
+                // they don't end with a single well known token, so it'd be very hard to get correctly (see
+                // the note below for reasoning on skipping happening before instead of after RBRACE for
+                // details).
+                if (parseBody) {
+                    final ReturnNode returnNode = new ReturnNode(functionNode.getLineNumber(), expr.getToken(), lastFinish, expr);
+                    appendStatement(returnNode);
+                }
                 functionNode.setFinish(lastFinish);
-
             } else {
-                expect(LBRACE);
-
-                // Gather the function elements.
-                final List<Statement> prevFunctionDecls = functionDeclarations;
-                functionDeclarations = new ArrayList<>();
-                try {
-                    sourceElements(false);
-                    addFunctionDeclarations(functionNode);
-                } finally {
-                    functionDeclarations = prevFunctionDecls;
+                expectDontAdvance(LBRACE);
+                if (parseBody || !skipFunctionBody(functionNode)) {
+                    next();
+                    // Gather the function elements.
+                    final List<Statement> prevFunctionDecls = functionDeclarations;
+                    functionDeclarations = new ArrayList<>();
+                    try {
+                        sourceElements(false);
+                        addFunctionDeclarations(functionNode);
+                    } finally {
+                        functionDeclarations = prevFunctionDecls;
+                    }
+
+                    lastToken = token;
+                    if (parseBody) {
+                        // Since the lexer can read ahead and lexify some number of tokens in advance and have
+                        // them buffered in the TokenStream, we need to produce a lexer state as it was just
+                        // before it lexified RBRACE, and not whatever is its current (quite possibly well read
+                        // ahead) state.
+                        endParserState = new ParserState(Token.descPosition(token), line, linePosition);
+
+                        // NOTE: you might wonder why do we capture/restore parser state before RBRACE instead of
+                        // after RBRACE; after all, we could skip the below "expect(RBRACE);" if we captured the
+                        // state after it. The reason is that RBRACE is a well-known token that we can expect and
+                        // will never involve us getting into a weird lexer state, and as such is a great reparse
+                        // point. Typical example of a weird lexer state after RBRACE would be:
+                        //     function this_is_skipped() { ... } "use strict";
+                        // because lexer is doing weird off-by-one maneuvers around string literal quotes. Instead
+                        // of compensating for the possibility of a string literal (or similar) after RBRACE,
+                        // we'll rather just restart parsing from this well-known, friendly token instead.
+                    }
                 }
-
-                lastToken = token;
                 expect(RBRACE);
                 functionNode.setFinish(finish);
             }
         } finally {
             functionNode = restoreFunctionNode(functionNode, lastToken);
         }
+
+        // NOTE: we can only do alterations to the function node after restoreFunctionNode.
+
+        if (parseBody) {
+            functionNode = functionNode.setEndParserState(lc, endParserState);
+        } else if (functionNode.getBody().getStatementCount() > 0){
+            // This is to ensure the body is empty when !parseBody but we couldn't skip parsing it (see
+            // skipFunctionBody() for possible reasons). While it is not strictly necessary for correctness to
+            // enforce empty bodies in nested functions that were supposed to be skipped, we do assert it as
+            // an invariant in few places in the compiler pipeline, so for consistency's sake we'll throw away
+            // nested bodies early if we were supposed to skip 'em.
+            functionNode = functionNode.setBody(null, functionNode.getBody().setStatements(null,
+                    Collections.<Statement>emptyList()));
+        }
+
+        if (reparsedFunction != null) {
+            // We restore the flags stored in the function's ScriptFunctionData that we got when we first
+            // eagerly parsed the code. We're doing it because some flags would be set based on the
+            // content of the function, or even content of its nested functions, most of which are normally
+            // skipped during an on-demand compilation.
+            final RecompilableScriptFunctionData data = reparsedFunction.getScriptFunctionData(functionNode.getId());
+            if (data != null) {
+                // Data can be null if when we originally parsed the file, we removed the function declaration
+                // as it was dead code.
+                functionNode = functionNode.setFlags(lc, data.getFunctionFlags());
+                // This compensates for missing markEval() in case the function contains an inner function
+                // that contains eval(), that now we didn't discover since we skipped the inner function.
+                if (functionNode.hasNestedEval()) {
+                    assert functionNode.hasScopeBlock();
+                    functionNode = functionNode.setBody(lc, functionNode.getBody().setNeedsScope(null));
+                }
+            }
+        }
         printAST(functionNode);
         return functionNode;
     }
 
+    private boolean skipFunctionBody(final FunctionNode functionNode) {
+        if (reparsedFunction == null) {
+            // Not reparsing, so don't skip any function body.
+            return false;
+        }
+        // Skip to the RBRACE of this function, and continue parsing from there.
+        final RecompilableScriptFunctionData data = reparsedFunction.getScriptFunctionData(functionNode.getId());
+        if (data == null) {
+            // Nested function is not known to the reparsed function. This can happen if the FunctionNode was
+            // in dead code that was removed. Both FoldConstants and Lower prune dead code. In that case, the
+            // FunctionNode was dropped before a RecompilableScriptFunctionData could've been created for it.
+            return false;
+        }
+        final ParserState parserState = (ParserState)data.getEndParserState();
+        assert parserState != null;
+
+        stream.reset();
+        lexer = parserState.createLexer(source, lexer, stream, scripting && !env._no_syntax_extensions);
+        line = parserState.line;
+        linePosition = parserState.linePosition;
+        // Doesn't really matter, but it's safe to treat it as if there were a semicolon before
+        // the RBRACE.
+        type = SEMICOLON;
+        k = -1;
+        next();
+
+        return true;
+    }
+
+    /**
+     * Encapsulates part of the state of the parser, enough to reconstruct the state of both parser and lexer
+     * for resuming parsing after skipping a function body.
+     */
+    private static class ParserState {
+        private final int position;
+        private final int line;
+        private final int linePosition;
+
+        ParserState(final int position, final int line, final int linePosition) {
+            this.position = position;
+            this.line = line;
+            this.linePosition = linePosition;
+        }
+
+        Lexer createLexer(final Source source, final Lexer lexer, final TokenStream stream, final boolean scripting) {
+            final Lexer newLexer = new Lexer(source, position, lexer.limit - position, stream, scripting, true);
+            newLexer.restoreState(new Lexer.State(position, Integer.MAX_VALUE, line, -1, linePosition, SEMICOLON));
+            return newLexer;
+        }
+    }
+
     private void printAST(final FunctionNode functionNode) {
         if (functionNode.getFlag(FunctionNode.IS_PRINT_AST)) {
             env.getErr().println(new ASTWriter(functionNode));
@@ -3247,6 +3367,9 @@
             } else {
                 lc.setFlag(fn, FunctionNode.HAS_NESTED_EVAL);
             }
+            // NOTE: it is crucial to mark the body of the outer function as needing scope even when we skip
+            // parsing a nested function. functionBody() contains code to compensate for the lack of invoking
+            // this method when the parser skips a nested function.
             lc.setBlockNeedsScope(lc.getFunctionBody(fn));
         }
     }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/TokenStream.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/TokenStream.java	Thu Sep 11 14:30:00 2014 -0700
@@ -209,4 +209,8 @@
         in = count;
         buffer = newBuffer;
     }
+
+    void reset() {
+        in = out = count = base = 0;
+    }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/AllocationStrategy.java	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2014, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.nashorn.internal.runtime;
+
+import static jdk.nashorn.internal.lookup.Lookup.MH;
+
+import java.io.Serializable;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import jdk.nashorn.internal.codegen.CompilerConstants;
+import jdk.nashorn.internal.codegen.ObjectClassGenerator.AllocatorDescriptor;
+
+/**
+ * Encapsulates the allocation strategy for a function when used as a constructor. Basically the same as
+ * {@link AllocatorDescriptor}, but with an additionally cached resolved method handle. There is also a
+ * canonical default allocation strategy for functions that don't assign any "this" properties (vast majority
+ * of all functions), therefore saving some storage space in {@link RecompilableScriptFunctionData} that would
+ * otherwise be lost to identical tuples of (map, className, handle) fields.
+ */
+final class AllocationStrategy implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    private static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
+
+    private static final AllocationStrategy DEFAULT_STRATEGY = new AllocationStrategy(new AllocatorDescriptor(0));
+
+    /** Allocator map from allocator descriptor */
+    private final PropertyMap allocatorMap;
+
+    /** Name of class where allocator function resides */
+    private final String allocatorClassName;
+
+    /** lazily generated allocator */
+    private transient MethodHandle allocator;
+
+    private AllocationStrategy(final AllocatorDescriptor desc) {
+        this.allocatorMap = desc.getAllocatorMap();
+        // These classes get loaded, so an interned variant of their name is most likely around anyway.
+        this.allocatorClassName = desc.getAllocatorClassName().intern();
+    }
+
+    private boolean matches(final AllocatorDescriptor desc) {
+        return desc.getAllocatorMap().size() == allocatorMap.size() &&
+                desc.getAllocatorClassName().equals(allocatorClassName);
+    }
+
+    static AllocationStrategy get(final AllocatorDescriptor desc) {
+        return DEFAULT_STRATEGY.matches(desc) ? DEFAULT_STRATEGY : new AllocationStrategy(desc);
+    }
+
+    PropertyMap getAllocatorMap() {
+        return allocatorMap;
+    }
+
+    ScriptObject allocate(final PropertyMap map) {
+        try {
+            if (allocator == null) {
+                allocator = MH.findStatic(LOOKUP, Context.forStructureClass(allocatorClassName),
+                        CompilerConstants.ALLOCATE.symbolName(), MH.type(ScriptObject.class, PropertyMap.class));
+            }
+            return (ScriptObject)allocator.invokeExact(map);
+        } catch (final RuntimeException | Error e) {
+            throw e;
+        } catch (final Throwable t) {
+            throw new RuntimeException(t);
+        }
+    }
+
+    private Object readResolve() {
+        if(allocatorMap.size() == DEFAULT_STRATEGY.allocatorMap.size() &&
+                allocatorClassName.equals(DEFAULT_STRATEGY.allocatorClassName)) {
+            return DEFAULT_STRATEGY;
+        }
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        return "AllocationStrategy[allocatorClassName=" + allocatorClassName + ", allocatorMap.size=" +
+                allocatorMap.size() + "]";
+    }
+}
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CodeInstaller.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CodeInstaller.java	Thu Sep 11 14:30:00 2014 -0700
@@ -80,12 +80,6 @@
     public long getUniqueScriptId();
 
     /**
-     * Get next unique eval id
-     * @return unique eval id
-     */
-    public long getUniqueEvalId();
-
-    /**
      * Store a compiled script for later reuse
      * @param source the script source
      * @param mainClassName the main class name
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CompiledFunction.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CompiledFunction.java	Thu Sep 11 14:30:00 2014 -0700
@@ -27,7 +27,6 @@
 import static jdk.nashorn.internal.lookup.Lookup.MH;
 import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
 import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.isValid;
-
 import java.lang.invoke.CallSite;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -39,6 +38,7 @@
 import java.util.TreeMap;
 import java.util.function.Supplier;
 import java.util.logging.Level;
+
 import jdk.internal.dynalink.linker.GuardedInvocation;
 import jdk.nashorn.internal.codegen.Compiler;
 import jdk.nashorn.internal.codegen.Compiler.CompilationPhases;
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Context.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Context.java	Thu Sep 11 14:30:00 2014 -0700
@@ -196,16 +196,11 @@
         }
 
         @Override
-        public long getUniqueEvalId() {
-            return context.getUniqueEvalId();
-        }
-
-        @Override
-        public void storeScript(final String classInfoFile, final Source source, final String mainClassName,
+        public void storeScript(final String cacheKey, final Source source, final String mainClassName,
                                 final Map<String,byte[]> classBytes, final Map<Integer, FunctionInitializer> initializers,
                                 final Object[] constants, final int compilationId) {
             if (context.codeStore != null) {
-                context.codeStore.storeScript(classInfoFile, source, mainClassName, classBytes, initializers, constants, compilationId);
+                context.codeStore.storeScript(cacheKey, source, mainClassName, classBytes, initializers, constants, compilationId);
             }
         }
 
@@ -334,9 +329,6 @@
     /** Unique id for script. Used only when --loader-per-compile=false */
     private final AtomicLong uniqueScriptId;
 
-    /** Unique id for 'eval' */
-    private final AtomicLong uniqueEvalId;
-
     /** Optional class filter to use for Java classes. Can be null. */
     private final ClassFilter classFilter;
 
@@ -450,7 +442,6 @@
             this.uniqueScriptId = new AtomicLong();
         }
         this.errors    = errors;
-        this.uniqueEvalId = new AtomicLong();
 
         // if user passed -classpath option, make a class loader with that and set it as
         // thread context class loader so that script can access classes from that path.
@@ -1190,10 +1181,6 @@
              }, CREATE_LOADER_ACC_CTXT);
     }
 
-    private long getUniqueEvalId() {
-        return uniqueEvalId.getAndIncrement();
-    }
-
     private long getUniqueScriptId() {
         return uniqueScriptId.getAndIncrement();
     }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/FindProperty.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/FindProperty.java	Thu Sep 11 14:30:00 2014 -0700
@@ -29,7 +29,9 @@
 import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.isValid;
 
 import java.lang.invoke.MethodHandle;
+import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.nashorn.internal.codegen.ObjectClassGenerator;
+import jdk.nashorn.internal.objects.Global;
 
 /**
  * This class represents the result from a find property search.
@@ -79,25 +81,17 @@
      * @param programPoint program point, or INVALID_PROGRAM_POINT if pessimistic
      * @return method handle for the getter
      */
-    public MethodHandle getGetter(final Class<?> type, final int programPoint) {
+    public MethodHandle getGetter(final Class<?> type, final int programPoint, final LinkRequest request) {
         final MethodHandle getter;
         if (isValid(programPoint)) {
             getter = property.getOptimisticGetter(type, programPoint);
         } else {
             getter = property.getGetter(type);
         }
-        return getGetterInner(getter);
-    }
-
-    private MethodHandle getGetterInner(final MethodHandle getter) {
         if (property instanceof UserAccessorProperty) {
-            final UserAccessorProperty uc        = (UserAccessorProperty)property;
-            final ScriptObject         owner     = getOwner();
-            final ScriptObject         container = (owner != null) ? owner : self;
-            return MH.insertArguments(getter, 0, uc.getAccessors(container));
+            return insertAccessorsGetter((UserAccessorProperty) property, request, getter);
         }
         return getter;
-
     }
 
     /**
@@ -111,18 +105,31 @@
      *
      * @return method handle for the getter
      */
-    public MethodHandle getSetter(final Class<?> type, final boolean strict) {
-        final MethodHandle setter = property.getSetter(type, getOwner().getMap());
+    public MethodHandle getSetter(final Class<?> type, final boolean strict, final LinkRequest request) {
+        MethodHandle setter = property.getSetter(type, getOwner().getMap());
         if (property instanceof UserAccessorProperty) {
-            final UserAccessorProperty uc        = (UserAccessorProperty)property;
-            final ScriptObject         owner     = getOwner();
-            final ScriptObject         container = (owner != null) ? owner : self;
-            return MH.insertArguments(setter, 0, uc.getAccessors(container), strict ? property.getKey() : null);
+            setter =  MH.insertArguments(setter, 1, strict ? property.getKey() : null);
+            return insertAccessorsGetter((UserAccessorProperty) property, request, setter);
         }
 
         return setter;
     }
 
+    // Fold an accessor getter into the method handle of a user accessor property.
+    private MethodHandle insertAccessorsGetter(final UserAccessorProperty uap, final LinkRequest request, final MethodHandle mh) {
+        MethodHandle superGetter = uap.getAccessorsGetter();
+        if (isInherited()) {
+            superGetter = ScriptObject.addProtoFilter(superGetter, getProtoChainLength());
+        }
+        if (request != null && !(request.getReceiver() instanceof ScriptObject)) {
+            final MethodHandle wrapFilter = Global.getPrimitiveWrapFilter(request.getReceiver());
+            superGetter = MH.filterArguments(superGetter, 0, wrapFilter.asType(wrapFilter.type().changeReturnType(superGetter.type().parameterType(0))));
+        }
+        superGetter = MH.asType(superGetter, superGetter.type().changeParameterType(0, Object.class));
+
+        return MH.foldArguments(mh, superGetter);
+    }
+
     /**
      * Return the {@code ScriptObject} owning of the property:  this means the prototype.
      * @return owner of property
@@ -136,7 +143,7 @@
      * @return appropriate receiver
      */
     public ScriptObject getGetterReceiver() {
-        return property != null && property.hasGetterFunction(prototype) ? self : prototype;
+        return property != null && property instanceof UserAccessorProperty ? self : prototype;
     }
 
     /**
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/GlobalConstants.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/GlobalConstants.java	Thu Sep 11 14:30:00 2014 -0700
@@ -28,6 +28,8 @@
 import static jdk.nashorn.internal.codegen.CompilerConstants.staticCall;
 import static jdk.nashorn.internal.codegen.CompilerConstants.virtualCall;
 import static jdk.nashorn.internal.lookup.Lookup.MH;
+import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
+import static jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor.getProgramPoint;
 import static jdk.nashorn.internal.runtime.logging.DebugLogger.quote;
 
 import java.lang.invoke.MethodHandle;
@@ -370,22 +372,19 @@
      * @param find      property lookup
      * @param receiver  receiver
      * @param desc      callsite descriptor
-     * @param request   link request
-     * @param operator  operator
      *
      * @return resulting getter, or null if failed to create constant
      */
-    synchronized GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
-        if (GLOBAL_ONLY && !find.getOwner().isGlobal()) {
+    synchronized GuardedInvocation findGetMethod(final FindProperty find, final ScriptObject receiver, final CallSiteDescriptor desc) {
+        // Also return null if property may have side effects
+        if ((GLOBAL_ONLY && !find.getOwner().isGlobal()) || find.getProperty() instanceof UserAccessorProperty) {
             return null;
         }
 
-        final int programPoint         = NashornCallSiteDescriptor.isOptimistic(desc) ?
-            NashornCallSiteDescriptor.getProgramPoint(desc) :
-            UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
-        final boolean     isOptimistic = programPoint != UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
-        final Class<?>    retType      = desc.getMethodType().returnType();
-        final String      name         = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
+        final boolean  isOptimistic = NashornCallSiteDescriptor.isOptimistic(desc);
+        final int      programPoint = isOptimistic ? getProgramPoint(desc) : INVALID_PROGRAM_POINT;
+        final Class<?> retType      = desc.getMethodType().returnType();
+        final String   name         = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
 
         final Access acc = getOrCreateSwitchPoint(name);
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/RecompilableScriptFunctionData.java	Thu Sep 11 14:30:00 2014 -0700
@@ -42,6 +42,7 @@
 import jdk.nashorn.internal.codegen.Compiler.CompilationPhases;
 import jdk.nashorn.internal.codegen.CompilerConstants;
 import jdk.nashorn.internal.codegen.FunctionSignature;
+import jdk.nashorn.internal.codegen.ObjectClassGenerator.AllocatorDescriptor;
 import jdk.nashorn.internal.codegen.OptimisticTypesPersistence;
 import jdk.nashorn.internal.codegen.TypeMap;
 import jdk.nashorn.internal.codegen.types.Type;
@@ -55,7 +56,6 @@
 import jdk.nashorn.internal.runtime.logging.DebugLogger;
 import jdk.nashorn.internal.runtime.logging.Loggable;
 import jdk.nashorn.internal.runtime.logging.Logger;
-
 /**
  * This is a subclass that represents a script function that may be regenerated,
  * for example with specialization based on call site types, or lazily generated.
@@ -81,26 +81,29 @@
     /** Token of this function within the source. */
     private final long token;
 
-    /** Allocator map from makeMap() */
-    private final PropertyMap allocatorMap;
+    /**
+     * Represents the allocation strategy (property map, script object class, and method handle) for when
+     * this function is used as a constructor. Note that majority of functions (those not setting any this.*
+     * properties) will share a single canonical "default strategy" instance.
+     */
+    private final AllocationStrategy allocationStrategy;
+
+    /**
+     * Opaque object representing parser state at the end of the function. Used when reparsing outer function
+     * to help with skipping parsing inner functions.
+     */
+    private final Object endParserState;
 
     /** Code installer used for all further recompilation/specialization of this ScriptFunction */
     private transient CodeInstaller<ScriptEnvironment> installer;
 
-    /** Name of class where allocator function resides */
-    private final String allocatorClassName;
-
-    /** lazily generated allocator */
-    private transient MethodHandle allocator;
-
     private final Map<Integer, RecompilableScriptFunctionData> nestedFunctions;
 
     /** Id to parent function if one exists */
     private RecompilableScriptFunctionData parent;
 
-    private final boolean isDeclared;
-    private final boolean isAnonymous;
-    private final boolean needsCallee;
+    /** Copy of the {@link FunctionNode} flags. */
+    private final int functionFlags;
 
     private static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
 
@@ -119,8 +122,7 @@
      *
      * @param functionNode        functionNode that represents this function code
      * @param installer           installer for code regeneration versions of this function
-     * @param allocatorClassName  name of our allocator class, will be looked up dynamically if used as a constructor
-     * @param allocatorMap        allocator map to seed instances with, when constructing
+     * @param allocationDescriptor descriptor for the allocation behavior when this function is used as a constructor
      * @param nestedFunctions     nested function map
      * @param externalScopeDepths external scope depths
      * @param internalSymbols     internal symbols to method, defined in its scope
@@ -128,30 +130,27 @@
     public RecompilableScriptFunctionData(
         final FunctionNode functionNode,
         final CodeInstaller<ScriptEnvironment> installer,
-        final String allocatorClassName,
-        final PropertyMap allocatorMap,
+        final AllocatorDescriptor allocationDescriptor,
         final Map<Integer, RecompilableScriptFunctionData> nestedFunctions,
         final Map<String, Integer> externalScopeDepths,
         final Set<String> internalSymbols) {
 
         super(functionName(functionNode),
               Math.min(functionNode.getParameters().size(), MAX_ARITY),
-              getFlags(functionNode));
+              getDataFlags(functionNode));
 
         this.functionName        = functionNode.getName();
         this.lineNumber          = functionNode.getLineNumber();
-        this.isDeclared          = functionNode.isDeclared();
-        this.needsCallee         = functionNode.needsCallee();
-        this.isAnonymous         = functionNode.isAnonymous();
+        this.functionFlags       = functionNode.getFlags() | (functionNode.needsCallee() ? FunctionNode.NEEDS_CALLEE : 0);
         this.functionNodeId      = functionNode.getId();
         this.source              = functionNode.getSource();
+        this.endParserState      = functionNode.getEndParserState();
         this.token               = tokenFor(functionNode);
         this.installer           = installer;
-        this.allocatorClassName  = allocatorClassName;
-        this.allocatorMap        = allocatorMap;
-        this.nestedFunctions     = nestedFunctions;
-        this.externalScopeDepths = externalScopeDepths;
-        this.internalSymbols     = new HashSet<>(internalSymbols);
+        this.allocationStrategy  = AllocationStrategy.get(allocationDescriptor);
+        this.nestedFunctions     = smallMap(nestedFunctions);
+        this.externalScopeDepths = smallMap(externalScopeDepths);
+        this.internalSymbols     = smallSet(new HashSet<>(internalSymbols));
 
         for (final RecompilableScriptFunctionData nfn : nestedFunctions.values()) {
             assert nfn.getParent() == null;
@@ -161,6 +160,27 @@
         createLogger();
     }
 
+    private static <K, V> Map<K, V> smallMap(final Map<K, V> map) {
+        if (map == null || map.isEmpty()) {
+            return Collections.emptyMap();
+        } else if (map.size() == 1) {
+            final Map.Entry<K, V> entry = map.entrySet().iterator().next();
+            return Collections.singletonMap(entry.getKey(), entry.getValue());
+        } else {
+            return map;
+        }
+    }
+
+    private static <T> Set<T> smallSet(final Set<T> set) {
+        if (set == null || set.isEmpty()) {
+            return Collections.emptySet();
+        } else if (set.size() == 1) {
+            return Collections.singleton(set.iterator().next());
+        } else {
+            return set;
+        }
+    }
+
     @Override
     public DebugLogger getLogger() {
         return log;
@@ -190,11 +210,7 @@
      * @return the external symbol table with proto depths
      */
     public int getExternalSymbolDepth(final String symbolName) {
-        final Map<String, Integer> map = externalScopeDepths;
-        if (map == null) {
-            return -1;
-        }
-        final Integer depth = map.get(symbolName);
+        final Integer depth = externalScopeDepths.get(symbolName);
         if (depth == null) {
             return -1;
         }
@@ -202,6 +218,23 @@
     }
 
     /**
+     * Returns the names of all external symbols this function uses.
+     * @return the names of all external symbols this function uses.
+     */
+    public Set<String> getExternalSymbolNames() {
+        return Collections.unmodifiableSet(externalScopeDepths.keySet());
+    }
+
+    /**
+     * Returns the opaque object representing the parser state at the end of this function's body, used to
+     * skip parsing this function when reparsing its containing outer function.
+     * @return the object representing the end parser state
+     */
+    public Object getEndParserState() {
+        return endParserState;
+    }
+
+    /**
      * Get the parent of this RecompilableScriptFunctionData. If we are
      * a nested function, we have a parent. Note that "null" return value
      * can also mean that we have a parent but it is unknown, so this can
@@ -269,7 +302,7 @@
 
     @Override
     public boolean inDynamicContext() {
-        return (flags & IN_DYNAMIC_CONTEXT) != 0;
+        return getFunctionFlag(FunctionNode.IN_DYNAMIC_CONTEXT);
     }
 
     private static String functionName(final FunctionNode fn) {
@@ -293,7 +326,7 @@
         return Token.toDesc(TokenType.FUNCTION, position, length);
     }
 
-    private static int getFlags(final FunctionNode functionNode) {
+    private static int getDataFlags(final FunctionNode functionNode) {
         int flags = IS_CONSTRUCTOR;
         if (functionNode.isStrict()) {
             flags |= IS_STRICT;
@@ -307,37 +340,20 @@
         if (functionNode.isVarArg()) {
             flags |= IS_VARIABLE_ARITY;
         }
-        if (functionNode.inDynamicContext()) {
-            flags |= IN_DYNAMIC_CONTEXT;
-        }
         return flags;
     }
 
     @Override
     PropertyMap getAllocatorMap() {
-        return allocatorMap;
+        return allocationStrategy.getAllocatorMap();
     }
 
     @Override
     ScriptObject allocate(final PropertyMap map) {
-        try {
-            ensureHasAllocator(); //if allocatorClass name is set to null (e.g. for bound functions) we don't even try
-            return allocator == null ? null : (ScriptObject)allocator.invokeExact(map);
-        } catch (final RuntimeException | Error e) {
-            throw e;
-        } catch (final Throwable t) {
-            throw new RuntimeException(t);
-        }
-    }
-
-    private void ensureHasAllocator() throws ClassNotFoundException {
-        if (allocator == null && allocatorClassName != null) {
-            this.allocator = MH.findStatic(LOOKUP, Context.forStructureClass(allocatorClassName), CompilerConstants.ALLOCATE.symbolName(), MH.type(ScriptObject.class, PropertyMap.class));
-        }
+        return allocationStrategy.allocate(map);
     }
 
     FunctionNode reparse() {
-        final boolean isProgram = functionNodeId == FunctionNode.FIRST_FUNCTION_ID;
         // NOTE: If we aren't recompiling the top-level program, we decrease functionNodeId 'cause we'll have a synthetic program node
         final int descPosition = Token.descPosition(token);
         final Context context = Context.getContextTrusted();
@@ -346,18 +362,27 @@
             source,
             new Context.ThrowErrorManager(),
             isStrict(),
-            functionNodeId - (isProgram ? 0 : 1),
             lineNumber - 1,
             context.getLogger(Parser.class)); // source starts at line 0, so even though lineNumber is the correct declaration line, back off one to make it exclusive
 
-        if (isAnonymous) {
+        if (getFunctionFlag(FunctionNode.IS_ANONYMOUS)) {
             parser.setFunctionName(functionName);
         }
+        parser.setReparsedFunction(this);
 
-        final FunctionNode program = parser.parse(CompilerConstants.PROGRAM.symbolName(), descPosition, Token.descLength(token), true);
-        // Parser generates a program AST even if we're recompiling a single function, so when we are only recompiling a
-        // single function, extract it from the program.
-        return (isProgram ? program : extractFunctionFromScript(program)).setName(null, functionName);
+        final FunctionNode program = parser.parse(CompilerConstants.PROGRAM.symbolName(), descPosition,
+                Token.descLength(token), true);
+        // Parser generates a program AST even if we're recompiling a single function, so when we are only
+        // recompiling a single function, extract it from the program.
+        return (isProgram() ? program : extractFunctionFromScript(program)).setName(null, functionName);
+    }
+
+    private boolean getFunctionFlag(final int flag) {
+        return (functionFlags & flag) != 0;
+    }
+
+    private boolean isProgram() {
+        return getFunctionFlag(FunctionNode.IS_PROGRAM);
     }
 
     TypeMap typeMap(final MethodType fnCallSiteType) {
@@ -546,7 +571,7 @@
         assert fns.size() == 1 : "got back more than one method in recompilation";
         final FunctionNode f = fns.iterator().next();
         assert f.getId() == functionNodeId;
-        if (!isDeclared && f.isDeclared()) {
+        if (!getFunctionFlag(FunctionNode.IS_DECLARED) && f.isDeclared()) {
             return f.clearFlag(null, FunctionNode.IS_DECLARED);
         }
         return f;
@@ -669,7 +694,15 @@
 
     @Override
     public boolean needsCallee() {
-        return needsCallee;
+        return getFunctionFlag(FunctionNode.NEEDS_CALLEE);
+    }
+
+    /**
+     * Returns the {@link FunctionNode} flags associated with this function data.
+     * @return the {@link FunctionNode} flags associated with this function data.
+     */
+    public int getFunctionFlags() {
+        return functionFlags;
     }
 
     @Override
@@ -721,21 +754,6 @@
     }
 
     /**
-     * Get the uppermost parent, the program, for this data
-     * @return program
-     */
-    public RecompilableScriptFunctionData getProgram() {
-        RecompilableScriptFunctionData program = this;
-        while (true) {
-            final RecompilableScriptFunctionData p = program.getParent();
-            if (p == null) {
-                return program;
-            }
-            program = p;
-        }
-    }
-
-    /**
      * Check whether a certain name is a global symbol, i.e. only exists as defined
      * in outermost scope and not shadowed by being parameter or assignment in inner
      * scopes
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptFunctionData.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptFunctionData.java	Thu Sep 11 14:30:00 2014 -0700
@@ -90,8 +90,6 @@
     public static final int USES_THIS      = 1 << 4;
     /** Is this a variable arity function? */
     public static final int IS_VARIABLE_ARITY = 1 << 5;
-    /** Is this declared in a dynamic context */
-    public static final int IN_DYNAMIC_CONTEXT = 1 << 6;
 
     /** Flag for strict or built-in functions */
     public static final int IS_STRICT_OR_BUILTIN = IS_STRICT | IS_BUILTIN;
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java	Thu Sep 11 14:30:00 2014 -0700
@@ -1050,7 +1050,7 @@
     }
 
     private static int getIntValue(final FindProperty find, final int programPoint) {
-        final MethodHandle getter = find.getGetter(int.class, programPoint);
+        final MethodHandle getter = find.getGetter(int.class, programPoint, null);
         if (getter != null) {
             try {
                 return (int)getter.invokeExact((Object)find.getGetterReceiver());
@@ -1065,7 +1065,7 @@
     }
 
     private static long getLongValue(final FindProperty find, final int programPoint) {
-        final MethodHandle getter = find.getGetter(long.class, programPoint);
+        final MethodHandle getter = find.getGetter(long.class, programPoint, null);
         if (getter != null) {
             try {
                 return (long)getter.invokeExact((Object)find.getGetterReceiver());
@@ -1080,7 +1080,7 @@
     }
 
     private static double getDoubleValue(final FindProperty find, final int programPoint) {
-        final MethodHandle getter = find.getGetter(double.class, programPoint);
+        final MethodHandle getter = find.getGetter(double.class, programPoint, null);
         if (getter != null) {
             try {
                 return (double)getter.invokeExact((Object)find.getGetterReceiver());
@@ -1971,7 +1971,7 @@
             }
         }
 
-        final GuardedInvocation cinv = Global.getConstants().findGetMethod(find, this, desc, request, operator);
+        final GuardedInvocation cinv = Global.getConstants().findGetMethod(find, this, desc);
         if (cinv != null) {
             return cinv;
         }
@@ -1983,7 +1983,7 @@
                 NashornCallSiteDescriptor.getProgramPoint(desc) :
                 UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
 
-        mh = find.getGetter(returnType, programPoint);
+        mh = find.getGetter(returnType, programPoint, request);
         // Get the appropriate guard for this callsite and property.
         final MethodHandle guard = NashornGuards.getGuard(this, property, desc, explicitInstanceOfCheck);
         final ScriptObject owner = find.getOwner();
@@ -1995,8 +1995,9 @@
             mh = Lookup.emptyGetter(returnType);
             protoSwitchPoint = getProtoSwitchPoint(name, owner);
         } else if (!find.isSelf()) {
-            assert mh.type().returnType().equals(returnType) : "returntype mismatch for getter " + mh.type().returnType() + " != " + returnType;
-            if (!property.hasGetterFunction(owner)) {
+            assert mh.type().returnType().equals(returnType) :
+                    "return type mismatch for getter " + mh.type().returnType() + " != " + returnType;
+            if (!(property instanceof UserAccessorProperty)) {
                 // Add a filter that replaces the self object with the prototype owning the property.
                 mh = addProtoFilter(mh, find.getProtoChainLength());
             }
@@ -2167,7 +2168,7 @@
             }
         }
 
-        final GuardedInvocation inv = new SetMethodCreator(this, find, desc, explicitInstanceOfCheck).createGuardedInvocation();
+        final GuardedInvocation inv = new SetMethodCreator(this, find, desc, request).createGuardedInvocation();
 
         final GuardedInvocation cinv = Global.getConstants().findSetMethod(find, this, inv, desc, request);
         if (cinv != null) {
@@ -2320,13 +2321,13 @@
                         find.isSelf()?
                             getKnownFunctionPropertyGuardSelf(
                                 getMap(),
-                                find.getGetter(Object.class, INVALID_PROGRAM_POINT),
+                                find.getGetter(Object.class, INVALID_PROGRAM_POINT, request),
                                 func)
                             :
                             //TODO this always does a scriptobject check
                             getKnownFunctionPropertyGuardProto(
                                 getMap(),
-                                find.getGetter(Object.class, INVALID_PROGRAM_POINT),
+                                find.getGetter(Object.class, INVALID_PROGRAM_POINT, request),
                                 find.getProtoChainLength(),
                                 func),
                         getProtoSwitchPoint(NO_SUCH_PROPERTY_NAME, find.getOwner()),
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/SetMethodCreator.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/SetMethodCreator.java	Thu Sep 11 14:30:00 2014 -0700
@@ -33,6 +33,7 @@
 import java.lang.invoke.SwitchPoint;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.linker.GuardedInvocation;
+import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor;
 import jdk.nashorn.internal.runtime.linker.NashornGuards;
 
@@ -48,7 +49,7 @@
     private final FindProperty       find;
     private final CallSiteDescriptor desc;
     private final Class<?>           type;
-    private final boolean            explicitInstanceOfCheck;
+    private final LinkRequest        request;
 
     /**
      * Creates a new property setter method creator.
@@ -56,14 +57,15 @@
      * @param find a result of a {@link ScriptObject#findProperty(String, boolean)} on the object for the property we
      * want to create a setter for. Can be null if the property does not yet exist on the object.
      * @param desc the descriptor of the call site that triggered the property setter lookup
+     * @param request the link request
      */
-    SetMethodCreator(final ScriptObject sobj, final FindProperty find, final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck) {
-        this.sobj = sobj;
-        this.map  = sobj.getMap();
-        this.find = find;
-        this.desc = desc;
-        this.type = desc.getMethodType().parameterType(1);
-        this.explicitInstanceOfCheck = explicitInstanceOfCheck;
+    SetMethodCreator(final ScriptObject sobj, final FindProperty find, final CallSiteDescriptor desc, final LinkRequest request) {
+        this.sobj    = sobj;
+        this.map     = sobj.getMap();
+        this.find    = find;
+        this.desc    = desc;
+        this.type    = desc.getMethodType().parameterType(1);
+        this.request = request;
 
     }
 
@@ -111,6 +113,7 @@
             // getGuard() and getException() either both return null, or neither does. The reason for that is that now
             // getGuard returns a map guard that casts its argument to ScriptObject, and if that fails, we need to
             // relink on ClassCastException.
+            final boolean explicitInstanceOfCheck = NashornGuards.explicitInstanceOfCheck(desc, request);
             return new GuardedInvocation(methodHandle, NashornGuards.getGuard(sobj, property, desc, explicitInstanceOfCheck),
                     (SwitchPoint)null, explicitInstanceOfCheck ? null : ClassCastException.class);
         }
@@ -140,6 +143,7 @@
 
     private SetMethod createExistingPropertySetter() {
         final Property property = find.getProperty();
+        final boolean isStrict  = NashornCallSiteDescriptor.isStrict(desc);
         final MethodHandle methodHandle;
 
         if (NashornCallSiteDescriptor.isDeclaration(desc)) {
@@ -152,7 +156,7 @@
             final PropertyMap oldMap = getMap();
             final Property newProperty = property.removeFlags(Property.NEEDS_DECLARATION);
             final PropertyMap newMap = oldMap.replaceProperty(property, newProperty);
-            final MethodHandle fastSetter = find.replaceProperty(newProperty).getSetter(type, NashornCallSiteDescriptor.isStrict(desc));
+            final MethodHandle fastSetter = find.replaceProperty(newProperty).getSetter(type, isStrict, request);
             final MethodHandle slowSetter = MH.insertArguments(ScriptObject.DECLARE_AND_SET, 1, getName()).asType(fastSetter.type());
 
             // cas map used as guard, if true that means we can do the set fast
@@ -161,14 +165,14 @@
             casMap = MH.asType(casMap, casMap.type().changeParameterType(0, Object.class));
             methodHandle = MH.guardWithTest(casMap, fastSetter, slowSetter);
         } else {
-            methodHandle = find.getSetter(type, NashornCallSiteDescriptor.isStrict(desc));
+            methodHandle = find.getSetter(type, isStrict, request);
         }
 
         assert methodHandle != null;
         assert property     != null;
 
         final MethodHandle boundHandle;
-        if (!property.hasSetterFunction(find.getOwner()) && find.isInherited()) {
+        if (!(property instanceof UserAccessorProperty) && find.isInherited()) {
             boundHandle = ScriptObject.addProtoFilter(methodHandle, find.getProtoChainLength());
         } else {
             boundHandle = methodHandle;
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Timing.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Timing.java	Thu Sep 11 14:30:00 2014 -0700
@@ -33,6 +33,8 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Supplier;
+
+import jdk.nashorn.internal.codegen.CompileUnit;
 import jdk.nashorn.internal.runtime.logging.DebugLogger;
 import jdk.nashorn.internal.runtime.logging.Loggable;
 import jdk.nashorn.internal.runtime.logging.Logger;
@@ -189,7 +191,7 @@
             maxKeyLength++;
 
             final StringBuilder sb = new StringBuilder();
-            sb.append("Accumulated complation phase Timings:\n\n");
+            sb.append("Accumulated compilation phase timings:\n\n");
             for (final Map.Entry<String, Long> entry : timings.entrySet()) {
                 int len;
 
@@ -224,6 +226,9 @@
                 append((int)(knownTime * 100.0 / total)).
                 append("%])");
 
+            sb.append("\n\nEmitted compile units: ").
+                append(CompileUnit.getEmittedUnitCount());
+
             return sb.toString();
         }
 
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/UserAccessorProperty.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/UserAccessorProperty.java	Thu Sep 11 14:30:00 2014 -0700
@@ -34,8 +34,8 @@
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
 import java.util.concurrent.Callable;
-import jdk.nashorn.internal.codegen.CompilerConstants;
 import jdk.nashorn.internal.lookup.Lookup;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 
@@ -48,7 +48,7 @@
 
     private static final long serialVersionUID = -5928687246526840321L;
 
-    static class Accessors {
+    static final class Accessors {
         Object getter;
         Object setter;
 
@@ -67,20 +67,20 @@
         }
     }
 
+    private static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
+
     /** Getter method handle */
-    private final static CompilerConstants.Call USER_ACCESSOR_GETTER = staticCall(MethodHandles.lookup(), UserAccessorProperty.class,
-            "userAccessorGetter", Object.class, Accessors.class, Object.class);
+    private final static MethodHandle INVOKE_GETTER_ACCESSOR = findOwnMH_S("invokeGetterAccessor", Object.class, Accessors.class, Object.class);
 
     /** Setter method handle */
-    private final static CompilerConstants.Call USER_ACCESSOR_SETTER = staticCall(MethodHandles.lookup(), UserAccessorProperty.class,
-            "userAccessorSetter", void.class, Accessors.class, String.class, Object.class, Object.class);
+    private final static MethodHandle INVOKE_SETTER_ACCESSOR = findOwnMH_S("invokeSetterAccessor", void.class, Accessors.class, String.class, Object.class, Object.class);
 
     /** Dynamic invoker for getter */
-    private static final Object INVOKE_UA_GETTER = new Object();
+    private static final Object GETTER_INVOKER_KEY = new Object();
 
     private static MethodHandle getINVOKE_UA_GETTER() {
 
-        return Context.getGlobal().getDynamicInvoker(INVOKE_UA_GETTER,
+        return Context.getGlobal().getDynamicInvoker(GETTER_INVOKER_KEY,
                 new Callable<MethodHandle>() {
                     @Override
                     public MethodHandle call() {
@@ -91,10 +91,10 @@
     }
 
     /** Dynamic invoker for setter */
-    private static Object INVOKE_UA_SETTER = new Object();
+    private static Object SETTER_INVOKER_KEY = new Object();
 
     private static MethodHandle getINVOKE_UA_SETTER() {
-        return Context.getGlobal().getDynamicInvoker(INVOKE_UA_SETTER,
+        return Context.getGlobal().getDynamicInvoker(SETTER_INVOKER_KEY,
                 new Callable<MethodHandle>() {
                     @Override
                     public MethodHandle call() {
@@ -190,7 +190,7 @@
 
     @Override
     public Object getObjectValue(final ScriptObject self, final ScriptObject owner) {
-        return userAccessorGetter(getAccessors((owner != null) ? owner : self), self);
+        return invokeGetterAccessor(getAccessors((owner != null) ? owner : self), self);
     }
 
     @Override
@@ -210,13 +210,13 @@
 
     @Override
     public void setValue(final ScriptObject self, final ScriptObject owner, final Object value, final boolean strict) {
-        userAccessorSetter(getAccessors((owner != null) ? owner : self), strict ? getKey() : null, self, value);
+        invokeSetterAccessor(getAccessors((owner != null) ? owner : self), strict ? getKey() : null, self, value);
     }
 
     @Override
     public MethodHandle getGetter(final Class<?> type) {
         //this returns a getter on the format (Accessors, Object receiver)
-        return Lookup.filterReturnType(USER_ACCESSOR_GETTER.methodHandle(), type);
+        return Lookup.filterReturnType(INVOKE_GETTER_ACCESSOR, type);
     }
 
     @Override
@@ -260,7 +260,7 @@
 
     @Override
     public MethodHandle getSetter(final Class<?> type, final PropertyMap currentMap) {
-        return USER_ACCESSOR_SETTER.methodHandle();
+        return INVOKE_SETTER_ACCESSOR;
     }
 
     @Override
@@ -269,11 +269,21 @@
         return (value instanceof ScriptFunction) ? (ScriptFunction)value : null;
     }
 
+    /**
+     * Get the getter for the {@code Accessors} object.
+     * This is the the super {@code Object} type getter with {@code Accessors} return type.
+     *
+     * @return The getter handle for the Accessors
+     */
+    MethodHandle getAccessorsGetter() {
+        return super.getGetter(Object.class).asType(MethodType.methodType(Accessors.class, Object.class));
+    }
+
     // User defined getter and setter are always called by "dyn:call". Note that the user
     // getter/setter may be inherited. If so, proto is bound during lookup. In either
     // inherited or self case, slot is also bound during lookup. Actual ScriptFunction
     // to be called is retrieved everytime and applied.
-    static Object userAccessorGetter(final Accessors gs, final Object self) {
+    private static Object invokeGetterAccessor(final Accessors gs, final Object self) {
         final Object func = gs.getter;
         if (func instanceof ScriptFunction) {
             try {
@@ -288,7 +298,7 @@
         return UNDEFINED;
     }
 
-    static void userAccessorSetter(final Accessors gs, final String name, final Object self, final Object value) {
+    private static void invokeSetterAccessor(final Accessors gs, final String name, final Object self, final Object value) {
         final Object func = gs.setter;
         if (func instanceof ScriptFunction) {
             try {
@@ -303,4 +313,8 @@
         }
     }
 
+    private static MethodHandle findOwnMH_S(final String name, final Class<?> rtype, final Class<?>... types) {
+        return MH.findStatic(LOOKUP, UserAccessorProperty.class, name, MH.type(rtype, types));
+    }
+
 }
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/PrimitiveLookup.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/PrimitiveLookup.java	Thu Sep 11 14:30:00 2014 -0700
@@ -32,11 +32,10 @@
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.linker.GuardedInvocation;
 import jdk.internal.dynalink.linker.LinkRequest;
-import jdk.internal.dynalink.support.CallSiteDescriptorFactory;
 import jdk.internal.dynalink.support.Guards;
-import jdk.nashorn.internal.lookup.Lookup;
 import jdk.nashorn.internal.runtime.FindProperty;
 import jdk.nashorn.internal.runtime.ScriptObject;
+import jdk.nashorn.internal.runtime.UserAccessorProperty;
 
 /**
  * Implements lookup of methods to link for dynamic operations on JavaScript primitive values (booleans, strings, and
@@ -86,15 +85,6 @@
                                                     final ScriptObject wrappedReceiver, final MethodHandle wrapFilter,
                                                     final MethodHandle protoFilter) {
         final CallSiteDescriptor desc = request.getCallSiteDescriptor();
-        final String operator = CallSiteDescriptorFactory.tokenizeOperators(desc).get(0);
-        if ("setProp".equals(operator) || "setElem".equals(operator)) {
-            final MethodType type = desc.getMethodType();
-            MethodHandle method = MH.asType(Lookup.EMPTY_SETTER, MH.type(void.class, Object.class, type.parameterType(1)));
-            if (type.parameterCount() == 3) {
-                method = MH.dropArguments(method, 2, type.parameterType(2));
-            }
-            return new GuardedInvocation(method, guard);
-        }
 
         if(desc.getNameTokenCount() > 2) {
             final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
@@ -102,7 +92,7 @@
             if(find == null) {
                 // Give up early, give chance to BeanLinker and NashornBottomLinker to deal with it.
                 return null;
-            } else if (find.isInherited() && !find.getProperty().hasGetterFunction(find.getOwner())) {
+            } else if (find.isInherited() && !(find.getProperty() instanceof UserAccessorProperty)) {
                 // If property is found in the prototype object bind the method handle directly to
                 // the proto filter instead of going through wrapper instantiation below.
                 final ScriptObject proto = wrappedReceiver.getProto();
--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/tools/Shell.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/tools/Shell.java	Thu Sep 11 14:30:00 2014 -0700
@@ -246,7 +246,7 @@
 
             // For each file on the command line.
             for (final String fileName : files) {
-                final FunctionNode functionNode = new Parser(env, sourceFor(fileName, new File(fileName)), errors, env._strict, FunctionNode.FIRST_FUNCTION_ID, 0, context.getLogger(Parser.class)).parse();
+                final FunctionNode functionNode = new Parser(env, sourceFor(fileName, new File(fileName)), errors, env._strict, 0, context.getLogger(Parser.class)).parse();
 
                 if (errors.getNumberOfErrors() != 0) {
                     return COMPILATION_ERROR;
--- a/nashorn/test/script/basic/JDK-8030182_2.js	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/JDK-8030182_2.js	Thu Sep 11 14:30:00 2014 -0700
@@ -41,6 +41,6 @@
 try {
     eval(str);
 } catch (e) {
-    print(e.stack.replace(/\\/g, '/').replace(/<eval>@[0-9]+/, '<eval>@<id>'));
+    print(e.stack.replace(/\\/g, '/'));
 }
 
--- a/nashorn/test/script/basic/JDK-8030182_2.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/JDK-8030182_2.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -1,3 +1,3 @@
 ReferenceError: "g" is not defined
-	at <program> (test/script/basic/JDK-8030182_2.js#42:4<eval>@<id>:-1)
+	at <program> (test/script/basic/JDK-8030182_2.js#42:4<eval>:-1)
 	at <program> (test/script/basic/JDK-8030182_2.js:42)
--- a/nashorn/test/script/basic/JDK-8048079_1.js	Thu Sep 11 09:09:02 2014 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) 2010, 2014, 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.
- */
-
-/**
- * JDK-8048079: Persistent code store is broken after optimistic types merge
- *
- * @test
- * @run
- * @option -pcc
- * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
- * @fork
- */
-
-load(__DIR__ + 'prototype.js');
-load(__DIR__ + 'yui.js');
--- a/nashorn/test/script/basic/JDK-8048079_1.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,3 +0,0 @@
-parsed and compiled ok prototype.js
-parsed and compiled ok yui-min.js
-parsed and compiled ok yui.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_1a.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8048079: Persistent code store is broken after optimistic types merge
+ *
+ * @test
+ * @runif external.prototype
+ * @option -pcc
+ * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
+ * @fork
+ */
+
+load(__DIR__ + 'prototype.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_1a.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,1 @@
+parsed and compiled ok prototype.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_1b.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8048079: Persistent code store is broken after optimistic types merge
+ *
+ * @test
+ * @runif external.yui
+ * @option -pcc
+ * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
+ * @fork
+ */
+
+load(__DIR__ + 'yui.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_1b.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,2 @@
+parsed and compiled ok yui-min.js
+parsed and compiled ok yui.js
--- a/nashorn/test/script/basic/JDK-8048079_2.js	Thu Sep 11 09:09:02 2014 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-/*
- * Copyright (c) 2010, 2014, 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.
- */
-
-/**
- * JDK-8048079: Persistent code store is broken after optimistic types merge
- *
- * @test
- * @run
- * @option -pcc
- * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
- * @fork
- */
-
-load(__DIR__ + 'prototype.js');
-load(__DIR__ + 'yui.js');
--- a/nashorn/test/script/basic/JDK-8048079_2.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,3 +0,0 @@
-parsed and compiled ok prototype.js
-parsed and compiled ok yui-min.js
-parsed and compiled ok yui.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_2a.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8048079: Persistent code store is broken after optimistic types merge.
+ * Same script as JDK-8048079_1a.js to exercise code cache.
+ * @test
+ * @runif external.prototype
+ * @option -pcc
+ * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
+ * @fork
+ */
+
+load(__DIR__ + 'prototype.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_2a.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,1 @@
+parsed and compiled ok prototype.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_2b.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8048079: Persistent code store is broken after optimistic types merge
+ * Same script as JDK-8048079_1b.js to exercise code cache again.
+ * @test
+ * @runif external.yui
+ * @option -pcc
+ * @option -Dnashorn.persistent.code.cache=build/nashorn_code_cache
+ * @fork
+ */
+
+load(__DIR__ + 'yui.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8048079_2b.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,2 @@
+parsed and compiled ok yui-min.js
+parsed and compiled ok yui.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8058179.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+/**
+ * JDK-8058179: Global constants get in the way of self-modifying properties
+ *
+ * @test
+ * @run
+ */
+
+var global = this;
+
+Object.defineProperty(global, "value", {
+    get: function() {
+        print("getting value");
+        global["value"] = "value 2";
+        return "value 1";
+    },
+    set: function(value) {
+        print("setting value: " + value);
+        delete global["value"];
+        global["value"] = value;
+    },
+    configurable: true
+});
+
+print(value);
+print(value);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8058179.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,4 @@
+getting value
+setting value: value 2
+value 1
+value 2
--- a/nashorn/test/script/basic/es6/const-empty.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/es6/const-empty.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -1,3 +1,3 @@
-SyntaxError: test/script/basic/es6/const-empty.js#33:4<eval>@1:2:7 Missing assignment to constant "x"
+SyntaxError: test/script/basic/es6/const-empty.js#33:4<eval>:2:7 Missing assignment to constant "x"
 const x;
        ^
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/const-redeclare-extra.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+
+function tryIt (code) {
+    try {
+        eval(code)
+    } catch (e) {
+        print(e)
+    }
+}
+
+tryIt(<<CODE
+    "use strict";
+    const x = 2;
+    var x = {};
+CODE)
+
+tryIt(<<CODE
+    "use strict";
+    var x = 2;
+    const x = {};
+CODE)
+
+tryIt(<<CODE
+    "use strict";
+    function x () {}
+    const x = 5;
+CODE)
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/const-redeclare-extra.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,9 @@
+SyntaxError: test/script/basic/es6/const-redeclare-extra.js#36:8<eval>:3:8 Variable "x" has already been declared
+    var x = {};
+        ^
+SyntaxError: test/script/basic/es6/const-redeclare-extra.js#36:8<eval>:2:8 Variable "x" has already been declared
+    var x = 2;
+        ^
+SyntaxError: test/script/basic/es6/const-redeclare-extra.js#36:8<eval>:2:13 Variable "x" has already been declared
+    function x () {}
+             ^
--- a/nashorn/test/script/basic/es6/const-redeclare.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/es6/const-redeclare.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -1,3 +1,3 @@
-SyntaxError: test/script/basic/es6/const-redeclare.js#33:4<eval>@1:2:6 Variable "x" has already been declared
+SyntaxError: test/script/basic/es6/const-redeclare.js#33:4<eval>:2:6 Variable "x" has already been declared
 const x = 2;
       ^
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let-redeclare-extra.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+function tryIt (code) {
+    try {
+        eval(code)
+    } catch (e) {
+        print(e)
+    }
+}
+
+tryIt(<<CODE
+    "use strict";
+    let x = 2;
+    const x = function (a,b,c) {};
+CODE)
+
+tryIt(<<CODE
+    "use strict";
+    let x = {};
+    var x = 2;
+CODE)
+
+tryIt(<<CODE
+    "use strict";
+    var x = 2;
+    let x = undefined;
+CODE)
+
+tryIt(<<CODE
+    "use strict";
+    const x = function (){};
+    let x = {};
+CODE)
+
+
+tryIt(<<CODE
+    "use strict";
+    let a = 2;
+    function a () {};
+CODE)
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let-redeclare-extra.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,15 @@
+SyntaxError: test/script/basic/es6/let-redeclare-extra.js#35:8<eval>:2:8 Variable "x" has already been declared
+    let x = 2;
+        ^
+SyntaxError: test/script/basic/es6/let-redeclare-extra.js#35:8<eval>:3:8 Variable "x" has already been declared
+    var x = 2;
+        ^
+SyntaxError: test/script/basic/es6/let-redeclare-extra.js#35:8<eval>:2:8 Variable "x" has already been declared
+    var x = 2;
+        ^
+SyntaxError: test/script/basic/es6/let-redeclare-extra.js#35:8<eval>:2:10 Variable "x" has already been declared
+    const x = function (){};
+          ^
+SyntaxError: test/script/basic/es6/let-redeclare-extra.js#35:8<eval>:3:13 Variable "a" has already been declared
+    function a () {};
+             ^
--- a/nashorn/test/script/basic/es6/let-redeclare.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/es6/let-redeclare.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -1,3 +1,3 @@
-SyntaxError: test/script/basic/es6/let-redeclare.js#33:4<eval>@1:2:4 Variable "x" has already been declared
+SyntaxError: test/script/basic/es6/let-redeclare.js#33:4<eval>:2:4 Variable "x" has already been declared
 let x = 2;
     ^
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_const_closure.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+function tryIt(code) {
+    try {
+        eval(code)
+    } catch (e) {
+        print(e)
+    }
+}
+
+
+tryIt(<<CODE
+    function a () {
+        this.val = 41
+        let self = this
+        this.b = function () {
+            return self.val;
+        }
+    }
+    c = new a()
+    print(c.b.call(null))
+CODE)
+
+
+tryIt(<<CODE
+        function a () {
+            this.val = 42
+            let self = this
+            this.b = function () {
+                return this.val;
+            }.bind(self)
+        }
+        c = new a()
+        print(c.b.call(null))
+CODE)
+
+tryIt(<<CODE
+    function a () {
+        this.val = 43
+        const self = this
+        this.b = function () {
+            return self.val;
+        }
+    }
+    c = new a()
+    print(c.b.call(null))
+CODE)
+
+tryIt(<<CODE
+        function a () {
+            this.val = 44
+            const self = this
+            this.b = function () {
+                return this.val;
+            }.bind(self)
+        }
+        c = new a()
+        print(c.b.call(null))
+CODE)
+
+tryIt(<<CODE
+       let a = {name : 'test'}
+       let f = function () {
+            print(this.name)
+       }
+       let nf = f.bind(a)
+       nf()
+       if (true) {
+            let a = null
+            nf()
+       }
+       nf()
+CODE)
+
+
+tryIt(<<CODE
+       let arr = []
+       for (let i = 0; i < 3; i++) {
+           arr[i] = function(){return i;}
+       }
+       for (let i in arr) {
+            print(arr[i]())
+       }
+       arr = []
+       for (var i = 0; i < 3; i++) {
+            (function(i){
+                arr[i] = function(){return i;}
+            })(i)
+       }
+       for (let i in arr) {
+           print(arr[i]())
+       }
+CODE)
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_const_closure.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,13 @@
+41
+42
+43
+44
+test
+test
+test
+3
+3
+3
+0
+1
+2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_const_reuse.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+function tryIt (code) {
+     try {
+         eval(code)
+     } catch (e) {
+         print(e)
+     }
+}
+
+tryIt(<<CODE
+    let a = 23
+    if (true) {
+        a--
+        let a = 43;
+    }
+CODE)
+
+tryIt(<<CODE
+    const a = 23
+    if (true) {
+        a--
+        const a = 43;
+    }
+CODE)
+
+tryIt(<<CODE
+    let a = 23
+    if (true) {
+        a--
+        const a = 43;
+    }
+CODE)
+
+tryIt(<<CODE
+    const a = 23
+    if (true) {
+        a--
+        let a = 43;
+    }
+CODE)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_const_reuse.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,8 @@
+ReferenceError: "a" is not defined
+SyntaxError: test/script/basic/es6/let_const_reuse.js#35:9<eval>:3:8 Assignment to constant "a"
+        a--
+        ^
+SyntaxError: test/script/basic/es6/let_const_reuse.js#35:9<eval>:3:8 Assignment to constant "a"
+        a--
+        ^
+ReferenceError: "a" is not defined
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_different_types.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+function tryIt (code) {
+    try {
+        eval(code)
+    } catch (e) {
+        print(e)
+    }
+}
+
+tryIt(<<CODE
+    let a = function () {  var a = "Hello World!"; return a; }
+    print(typeof a)
+    {
+        let a = 34;
+        print(typeof a)
+        if (true) {
+            let c = 54.7
+            var d = c
+            print(typeof c)
+            print(typeof d)
+        }
+    }
+    print(typeof a)
+    print(typeof a())
+    print(typeof c)
+    print(typeof d)
+    print(d)
+CODE)
+
+tryIt(<<CODE
+    let a = {}
+    if (true) {
+        function a () {
+            print (typeof a)
+            return 'Hello World!'
+        }
+        print(typeof a)
+        print(a())
+    }
+    print(typeof a)
+CODE)
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_different_types.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,13 @@
+function
+number
+number
+number
+function
+string
+undefined
+number
+54.7
+function
+function
+Hello World!
+object
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_loops.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+
+/**
+ * JDK-8057678: Tests for let&const keywords in Nashorn
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ * @option -scripting
+ */
+
+
+function tryIt (code) {
+    try {
+        eval(code)
+    } catch (e) {
+        print(e)
+    }
+}
+
+tryIt(<<CODE
+      let a = 2;
+      do {
+        a--;
+        let b = a;
+      } while (a > 0);
+      print(a)
+      print(b)
+CODE)
+
+tryIt(<<CODE
+       let a = 2
+       while(a > 0) {
+            a--
+            let b = a
+       }
+       print(a)
+       print(b)
+CODE)
+
+tryIt(<<CODE
+       let a = 2
+       while(a > 0) {
+            a--
+            const b = a
+       }
+       print(a)
+       print(b)
+CODE)
+
+tryIt(<<CODE
+       let a = 2;
+       do {
+         a--;
+         const b = a;
+       } while (a > 0);
+       print(a)
+       print(b)
+CODE)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/let_loops.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,8 @@
+0
+ReferenceError: "b" is not defined
+0
+ReferenceError: "b" is not defined
+0
+ReferenceError: "b" is not defined
+0
+ReferenceError: "b" is not defined
--- a/nashorn/test/script/basic/optimistic_check_type.js	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/optimistic_check_type.js	Thu Sep 11 14:30:00 2014 -0700
@@ -36,13 +36,18 @@
 
 // Testing conditional operator
 print(inspect("" ? b : x.a, "ternary operator"))
-print(inspect(x.b ? b : x.a, "ternary operator"))
-print(inspect(c ? b : a, "ternary operator"))
-print(inspect(!c ? b : a, "ternary operator"))
-print(inspect(d ? b : x.c, "ternary operator"))
+var b1 = b;
+print(inspect(x.b ? b1 : x.a, "ternary operator"))
+var b2 = b;
+print(inspect(c ? b2 : a, "ternary operator"))
+var b3 = b;
+print(inspect(!c ? b3 : a, "ternary operator"))
+var b4 = b;
+print(inspect(d ? b4 : x.c, "ternary operator"))
 print(inspect(x.c ? a : c, "ternary operator"))
 print(inspect(c ? d : a, "ternary operator"))
-print(inspect(c ? +a : b, "ternary operator"))
+var b5 = b;
+print(inspect(c ? +a : b5, "ternary operator"))
 
 // Testing format methods
 print(inspect(b.toFixed(2), "global double toFixed()"))
@@ -53,11 +58,14 @@
 print(inspect(trees[1], "member object"))
 trees[1] = undefined;
 print(inspect(trees[1], "member undefined"))
-print(inspect(1 in trees ? b : a, "conditional on array member"))
+var b6=b;
+print(inspect(1 in trees ? b6 : a, "conditional on array member"))
 delete trees[2]
-print(inspect(2 in trees ? b : a, "conditional on array member"))
+var b7=b;
+print(inspect(2 in trees ? b7 : a, "conditional on array member"))
 print(inspect(3 in trees ? trees[2]="bay" : a, "conditional on array member"))
-print(inspect("oak" in trees ? b : a, "conditional on array member"))
+var b8=b;
+print(inspect("oak" in trees ? b8 : a, "conditional on array member"))
 
 // Testing nested functions and return value
 function f1() {
--- a/nashorn/test/script/basic/splitter.js	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/splitter.js	Thu Sep 11 14:30:00 2014 -0700
@@ -30,7 +30,5 @@
  * @fork
  */
 
-load(__DIR__ + 'prototype.js');
-load(__DIR__ + 'yui.js');
 load(__DIR__ + 'NASHORN-689.js');
 load(__DIR__ + 'NASHORN-58.js');
--- a/nashorn/test/script/basic/splitter.js.EXPECTED	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/script/basic/splitter.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -1,6 +1,3 @@
-parsed and compiled ok prototype.js
-parsed and compiled ok yui-min.js
-parsed and compiled ok yui.js
 a=10
 a=9
 a=8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/splitter_prototype.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2010, 2013, 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.
+ */
+
+/**
+ * Test various scripts with low splitter threshold
+ *
+ * @test
+ * @option -Dnashorn.compiler.splitter.threshold=200
+ * @runif external.prototype
+ * @fork
+ */
+
+load(__DIR__ + 'prototype.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/splitter_prototype.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,1 @@
+parsed and compiled ok prototype.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/splitter_yui.js	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2010, 2013, 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.
+ */
+
+/**
+ * Test various scripts with low splitter threshold
+ *
+ * @test
+ * @option -Dnashorn.compiler.splitter.threshold=200
+ * @runif external.yui
+ * @fork
+ */
+
+load(__DIR__ + 'yui.js');
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/splitter_yui.js.EXPECTED	Thu Sep 11 14:30:00 2014 -0700
@@ -0,0 +1,2 @@
+parsed and compiled ok yui-min.js
+parsed and compiled ok yui.js
--- a/nashorn/test/src/jdk/nashorn/api/scripting/ScopeTest.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/src/jdk/nashorn/api/scripting/ScopeTest.java	Thu Sep 11 14:30:00 2014 -0700
@@ -407,6 +407,75 @@
         Assert.assertEquals(e.eval(sharedScript, newCtxt), "newer context");
     }
 
+
+    /**
+     * Test multi-threaded access to prototype user accessor properties for shared script classes with multiple globals.
+     */
+    @Test
+    public static void multiThreadedAccessorTest() throws ScriptException, InterruptedException {
+        final ScriptEngineManager m = new ScriptEngineManager();
+        final ScriptEngine e = m.getEngineByName("nashorn");
+        final Bindings b = e.createBindings();
+        final ScriptContext origContext = e.getContext();
+        final ScriptContext newCtxt = new SimpleScriptContext();
+        newCtxt.setBindings(b, ScriptContext.ENGINE_SCOPE);
+
+        e.eval("Object.defineProperty(Object.prototype, 'foo', { get: function() 'original context' })", origContext);
+        e.eval("Object.defineProperty(Object.prototype, 'foo', { get: function() 'new context', configurable: true })", newCtxt);
+        final String sharedScript = "({}).foo";
+
+        final Thread t1 = new Thread(new ScriptRunner(e, origContext, sharedScript, "original context", 1000));
+        final Thread t2 = new Thread(new ScriptRunner(e, newCtxt, sharedScript, "new context", 1000));
+        t1.start();
+        t2.start();
+        t1.join();
+        t2.join();
+
+        final Object obj3 = e.eval("delete Object.prototype.foo; Object.prototype.foo = 'newer context';", newCtxt);
+        assertEquals(obj3, "newer context");
+        final Thread t3 = new Thread(new ScriptRunner(e, origContext, sharedScript, "original context", 1000));
+        final Thread t4 = new Thread(new ScriptRunner(e, newCtxt, sharedScript, "newer context", 1000));
+
+        t3.start();
+        t4.start();
+        t3.join();
+        t4.join();
+    }
+
+    /**
+     * Test multi-threaded access to primitive prototype user accessor properties for shared script classes with multiple globals.
+     */
+    @Test
+    public static void multiThreadedPrimitiveAccessorTest() throws ScriptException, InterruptedException {
+        final ScriptEngineManager m = new ScriptEngineManager();
+        final ScriptEngine e = m.getEngineByName("nashorn");
+        final Bindings b = e.createBindings();
+        final ScriptContext origContext = e.getContext();
+        final ScriptContext newCtxt = new SimpleScriptContext();
+        newCtxt.setBindings(b, ScriptContext.ENGINE_SCOPE);
+
+        e.eval("Object.defineProperty(String.prototype, 'foo', { get: function() 'original context' })", origContext);
+        e.eval("Object.defineProperty(String.prototype, 'foo', { get: function() 'new context' })", newCtxt);
+        final String sharedScript = "''.foo";
+
+        final Thread t1 = new Thread(new ScriptRunner(e, origContext, sharedScript, "original context", 1000));
+        final Thread t2 = new Thread(new ScriptRunner(e, newCtxt, sharedScript, "new context", 1000));
+        t1.start();
+        t2.start();
+        t1.join();
+        t2.join();
+
+        final Object obj3 = e.eval("delete String.prototype.foo; Object.prototype.foo = 'newer context';", newCtxt);
+        assertEquals(obj3, "newer context");
+        final Thread t3 = new Thread(new ScriptRunner(e, origContext, sharedScript, "original context", 1000));
+        final Thread t4 = new Thread(new ScriptRunner(e, newCtxt, sharedScript, "newer context", 1000));
+
+        t3.start();
+        t4.start();
+        t3.join();
+        t4.join();
+    }
+
     /**
      * Test multi-threaded scope function invocation for shared script classes with multiple globals.
      */
--- a/nashorn/test/src/jdk/nashorn/internal/test/framework/TestFinder.java	Thu Sep 11 09:09:02 2014 -0700
+++ b/nashorn/test/src/jdk/nashorn/internal/test/framework/TestFinder.java	Thu Sep 11 14:30:00 2014 -0700
@@ -261,14 +261,17 @@
                     isTest = false;
                     isNotTest = true;
                     break;
-                case "@runif":
-                    if (System.getProperty(scanner.next()) != null) {
+                case "@runif": {
+                    final String prop = scanner.next();
+                    if (System.getProperty(prop) != null) {
                         shouldRun = true;
                     } else {
+                        factory.log("WARNING: (" + prop + ") skipping " + testFile);
                         isTest = false;
                         isNotTest = true;
                     }
                     break;
+                }
                 case "@run":
                     shouldRun = true;
                     break;