changeset 58294:ff8716224f35

8232046: AArch64 build failure after JDK-8225681 Reviewed-by: eosterlund
author adinn
date Thu, 10 Oct 2019 10:59:13 +0100
parents 7252d89e3a4e
children cf3205fdb6dc
files src/hotspot/cpu/aarch64/compiledIC_aarch64.cpp src/hotspot/cpu/aarch64/nativeInst_aarch64.cpp
diffstat 2 files changed, 17 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/src/hotspot/cpu/aarch64/compiledIC_aarch64.cpp	Fri Oct 11 08:49:42 2019 -0400
+++ b/src/hotspot/cpu/aarch64/compiledIC_aarch64.cpp	Thu Oct 10 10:59:13 2019 +0100
@@ -185,6 +185,10 @@
   NativeMovConstReg* method_holder
     = nativeMovConstReg_at(stub + NativeInstruction::instruction_size);
   method_holder->set_data(0);
+  if (!static_stub->is_aot()) {
+    NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
+    jump->set_jump_destination((address)-1);
+  }
 }
 
 //-----------------------------------------------------------------------------
--- a/src/hotspot/cpu/aarch64/nativeInst_aarch64.cpp	Fri Oct 11 08:49:42 2019 -0400
+++ b/src/hotspot/cpu/aarch64/nativeInst_aarch64.cpp	Thu Oct 10 10:59:13 2019 +0100
@@ -332,9 +332,14 @@
 
   // We use jump to self as the unresolved address which the inline
   // cache code (and relocs) know about
+  // As a special case we also use sequence movptr(r,0); br(r);
+  // i.e. jump to 0 when we need leave space for a wide immediate
+  // load
 
-  // return -1 if jump to self
-  dest = (dest == (address) this) ? (address) -1 : dest;
+  // return -1 if jump to self or to 0
+  if ((dest == (address)this) || dest == 0) {
+    dest = (address) -1;
+  }
   return dest;
 }
 
@@ -356,9 +361,13 @@
 
   // We use jump to self as the unresolved address which the inline
   // cache code (and relocs) know about
+  // As a special case we also use jump to 0 when first generating
+  // a general jump
 
-  // return -1 if jump to self
-  dest = (dest == (address) this) ? (address) -1 : dest;
+  // return -1 if jump to self or to 0
+  if ((dest == (address)this) || dest == 0) {
+    dest = (address) -1;
+  }
   return dest;
 }