Turn the load field code stub into a hydrogen code stub.

src/ia32/stub-cache-ia32.cc

 // Copyright 2012 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 1218 matching lines @@
   if (!global.is_null()) {
     GenerateCheckPropertyCell(masm(), global, name, scratch2(), &miss);
   }
 
   HandlerFrontendFooter(success, &miss);
 }
 
 
 void BaseLoadStubCompiler::GenerateLoadField(Register reg,
                                              Handle<JSObject> holder,
-                                             PropertyIndex index) {
-  // Get the value from the properties.
-  GenerateFastPropertyLoad(masm(), eax, reg, holder, index);
-  __ ret(0);
+                                             PropertyIndex field) {
+  if (!reg.is(receiver())) __ mov(receiver(), reg);

[danno, 2013/05/02 10:56:59]

Seems like you should try to clean this up in a follow-up CL that the receiver
is always in the right register on all platforms. Perhaps a comment would be a
good idea for now to explain why this move is needed (with a TODO).

+  if (kind() == Code::LOAD_IC) {
+    LoadFieldStub stub(field.is_inobject(holder),
+                       field.translate(holder),
+                       Representation::Tagged());
+    GenerateTailCall(masm(), stub.GetCode(isolate()));
+  } else {
+    KeyedLoadFieldStub stub(field.is_inobject(holder),
+                            field.translate(holder),
+                            Representation::Tagged());
+    GenerateTailCall(masm(), stub.GetCode(isolate()));
+  }
 }
 
 
 void BaseLoadStubCompiler::GenerateLoadCallback(
     Register reg,
     Handle<ExecutableAccessorInfo> callback) {
   // Insert additional parameters into the stack frame above return address.
   ASSERT(!scratch3().is(reg));
   __ pop(scratch3());  // Get return address to place it below.
 
@@ skipping 2490 matching lines @@
     TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32