Change the x64 optimizing compiler to stop using the fixed context register rsi.

src/ia32/lithium-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1061 matching lines @@
   LOperand* left = UseFixed(instr->left(), InstanceofStub::left());
   LOperand* right = UseFixed(instr->right(), InstanceofStub::right());
   LOperand* context = UseFixed(instr->context(), esi);
   LInstanceOf* result = new LInstanceOf(context, left, right);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoInstanceOfKnownGlobal(
     HInstanceOfKnownGlobal* instr) {
+
+  LOperand* left = UseFixed(instr->left(), InstanceofStub::left());
+  LOperand* temp = FixedTemp(edi);
+  LOperand* context = UseFixed(instr->context(), esi);
   LInstanceOfKnownGlobal* result =
-      new LInstanceOfKnownGlobal(
-          UseFixed(instr->context(), esi),
-          UseFixed(instr->left(), InstanceofStub::left()),
-          FixedTemp(edi));
+      new LInstanceOfKnownGlobal(context, left, temp);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) {
   LOperand* function = UseFixed(instr->function(), edi);
   LOperand* receiver = UseFixed(instr->receiver(), eax);
   LOperand* length = UseFixed(instr->length(), ebx);
   LOperand* elements = UseFixed(instr->elements(), ecx);
   LOperand* temp = FixedTemp(edx);
@@ skipping 139 matching lines @@
   LOperand* context = UseFixed(instr->context(), esi);
   argument_count_ -= instr->argument_count();
   LCallFunction* result = new LCallFunction(context);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) {
   argument_count_ -= instr->argument_count();
   LOperand* context = UseFixed(instr->context(), esi);
-  return MarkAsCall(DefineFixed(new LCallRuntime(context), eax), instr);
+  LCallRuntime* result = new LCallRuntime(context);
+  return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoShr(HShr* instr) {
   return DoShift(Token::SHR, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoSar(HSar* instr) {
   return DoShift(Token::SAR, instr);
@@ skipping 1000 matching lines @@
   LOperand* key = UseOrConstantAtStart(instr->key());
   LOperand* object = UseOrConstantAtStart(instr->object());
   LIn* result = new LIn(context, key, object);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32