A64: Synchronize with r18581.

src/a64/stub-cache-a64.cc

 // Copyright 2013 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 2364 matching lines @@
 void StubCompiler::GenerateBooleanCheck(Register object, Label* miss) {
   Label success;
   // Check that the object is a boolean.
   // TODO(all): Optimize this like LCodeGen::DoDeferredTaggedToI.
   __ JumpIfRoot(object, Heap::kTrueValueRootIndex, &success);
   __ JumpIfNotRoot(object, Heap::kFalseValueRootIndex, miss);
   __ Bind(&success);
 }
 
 
-void CallStubCompiler::PatchGlobalProxy(Handle<Object> object) {
-  // TODO(all): What is x0 here? Is the use of x3 significant?
+void CallStubCompiler::PatchImplicitReceiver(Handle<Object> object) {
+  // TODO(all): Is the use of x3 significant?
   if (object->IsGlobalObject()) {
     const int argc = arguments().immediate();
     const int receiver_offset = argc * kPointerSize;
-    __ Ldr(x3, FieldMemOperand(x0, GlobalObject::kGlobalReceiverOffset));
+    __ LoadRoot(x3, Heap::kUndefinedValueRootIndex);
     __ Poke(x3, receiver_offset);
   }
 }
 
 
 Register CallStubCompiler::HandlerFrontendHeader(Handle<Object> object,
                                                  Handle<JSObject> holder,
                                                  Handle<Name> name,
                                                  CheckType check,
                                                  Label* miss) {
@@ skipping 77 matching lines @@
   return receiver;
 }
 
 
 void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
                                             Register function,
                                             Label* miss) {
   ASSERT(function.Is(x1));
   // Check that the function really is a function.
   GenerateFunctionCheck(function, x3, miss);
-  PatchGlobalProxy(object);
+  PatchImplicitReceiver(object);
 
   // Invoke the function.
   __ InvokeFunction(function, arguments(), JUMP_FUNCTION,
                     NullCallWrapper(), call_kind());
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallInterceptor(Handle<JSObject> object,
                                                       Handle<JSObject> holder,
                                                       Handle<Name> name) {
@@ skipping 430 matching lines @@
 
   // Miss case, call the runtime.
   __ Bind(&miss);
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64