X64 Crankshaft: Fix and enable StoreContextSlot in lithium codegen on x64.

src/x64/lithium-x64.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 273 matching lines @@
 }
 
 
 void LUnaryMathOperation::PrintDataTo(StringStream* stream) {
   stream->Add("/%s ", hydrogen()->OpName());
   InputAt(0)->PrintTo(stream);
 }
 
 
 void LLoadContextSlot::PrintDataTo(StringStream* stream) {
-  InputAt(0)->PrintTo(stream);
   stream->Add("[%d]", slot_index());
 }
 
 
 void LStoreContextSlot::PrintDataTo(StringStream* stream) {
+  stream->Add("[%d] <- ", slot_index());
   InputAt(0)->PrintTo(stream);
-  stream->Add("[%d] <- ", slot_index());
-  InputAt(1)->PrintTo(stream);
 }
 
 
 void LCallKeyed::PrintDataTo(StringStream* stream) {
   stream->Add("[rcx] #%d / ", arity());
 }
 
 
 void LCallNamed::PrintDataTo(StringStream* stream) {
   SmartPointer<char> name_string = name()->ToCString();
@@ skipping 1400 matching lines @@
 
 
 LInstruction* LChunkBuilder::DoStoreGlobal(HStoreGlobal* instr) {
   LStoreGlobal* result = new LStoreGlobal(UseRegister(instr->value()),
                                           TempRegister());
   return instr->check_hole_value() ? AssignEnvironment(result) : result;
 }
 
 
 LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) {
-  LOperand* context = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LLoadContextSlot(context));
+  return DefineAsRegister(new LLoadContextSlot());
 }
 
 
 LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
-  Abort("Unimplemented: DoStoreContextSlot");  // Temporarily disabled (whesse).
-  LOperand* context;
   LOperand* value;
+  LOperand* temp_1 = NULL;
+  LOperand* temp_2 = NULL;
   if (instr->NeedsWriteBarrier()) {
-    context = UseTempRegister(instr->context());
     value = UseTempRegister(instr->value());
+    temp_1 = TempRegister();
+    temp_2 = TempRegister();
   } else {
-    context = UseRegister(instr->context());
     value = UseRegister(instr->value());
   }
-  return new LStoreContextSlot(context, value);
+  return new LStoreContextSlot(value, temp_1, temp_2);
 }
 
 
 LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
   ASSERT(instr->representation().IsTagged());
   LOperand* obj = UseRegisterAtStart(instr->object());
   return DefineAsRegister(new LLoadNamedField(obj));
 }
 
 
@@ skipping 285 matching lines @@
 
 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
   HEnvironment* outer = current_block_->last_environment()->outer();
   current_block_->UpdateEnvironment(outer);
   return NULL;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64