X64: Enable inline caching for calls, with some stubs stubbed out.

Review URL: http://codereview.chromium.org/149674

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ic.cc

@@ -365,13 +365,10 @@ Object* CallIC::LoadFunction(State state,
     return TypeError("undefined_method", object, name);
   }
 
-  // TODO(X64): Enable inline cache for calls.
-#ifndef V8_TARGET_ARCH_X64
   // Lookup is valid: Update inline cache and stub cache.
   if (FLAG_use_ic && lookup.IsLoaded()) {
     UpdateCaches(&lookup, state, object, name);
   }
-#endif
 
   // Get the property.
   PropertyAttributes attr;
@@ -1252,11 +1249,6 @@ void CallIC::GenerateInitialize(MacroAssembler* masm, int argc) {
 }
 
 
-void CallIC::GeneratePreMonomorphic(MacroAssembler* masm, int argc) {
-  Generate(masm, argc, ExternalReference(IC_Utility(kCallIC_Miss)));
-}
-
-
 void CallIC::GenerateMiss(MacroAssembler* masm, int argc) {
   Generate(masm, argc, ExternalReference(IC_Utility(kCallIC_Miss)));
 }

src/ic.h

@@ -174,7 +174,6 @@ class CallIC: public IC {
 
   // Code generator routines.
   static void GenerateInitialize(MacroAssembler* masm, int argc);
-  static void GeneratePreMonomorphic(MacroAssembler* masm, int argc);
   static void GenerateMiss(MacroAssembler* masm, int argc);
   static void GenerateMegamorphic(MacroAssembler* masm, int argc);
   static void GenerateNormal(MacroAssembler* masm, int argc);

src/stub-cache.cc

@@ -863,6 +863,8 @@ Object* StubCompiler::CompileCallInitialize(Code::Flags flags) {
 Object* StubCompiler::CompileCallPreMonomorphic(Code::Flags flags) {
   HandleScope scope;
   int argc = Code::ExtractArgumentsCountFromFlags(flags);
+  // The code of the PreMonomorphic stub is the same as the code
+  // of the Initialized stub.  They just differ on the code object flags.
   CallIC::GenerateInitialize(masm(), argc);
   Object* result = GetCodeWithFlags(flags, "CompileCallPreMonomorphic");
   if (!result->IsFailure()) {

src/x64/stub-cache-x64.cc

@@ -44,24 +44,24 @@ Object* CallStubCompiler::CompileCallConstant(Object* a,
                                               JSFunction* c,
                                               String* d,
                                               StubCompiler::CheckType e) {
-  UNIMPLEMENTED();
-  return NULL;
+  // TODO(X64): Implement a real stub.
+  return Failure::InternalError();
 }
 
 Object* CallStubCompiler::CompileCallField(Object* a,
                                            JSObject* b,
                                            int c,
                                            String* d) {
-  UNIMPLEMENTED();
-  return NULL;
+  // TODO(X64): Implement a real stub.
+  return Failure::InternalError();
 }
 
 
 Object* CallStubCompiler::CompileCallInterceptor(Object* a,
                                                  JSObject* b,
                                                  String* c) {
-  UNIMPLEMENTED();
-  return NULL;
+  // TODO(X64): Implement a real stub.
+  return Failure::InternalError();
 }
 
 
@@ -71,8 +71,8 @@ Object* CallStubCompiler::CompileCallGlobal(JSObject* object,
                                             JSGlobalPropertyCell* cell,
                                             JSFunction* function,
                                             String* name) {
-  UNIMPLEMENTED();
-  return NULL;
+  // TODO(X64): Implement a real stub.
+  return Failure::InternalError();
 }