X64: Enable more of LoadIC, disable individual stub types.

src/x64/ic-x64.cc

 // Copyright 2009 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 267 matching lines @@
 
 
 void LoadIC::GenerateArrayLength(MacroAssembler* masm) {
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
 void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) {
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
+
 void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- rcx    : name
+  //  -- rsp[0] : return address
+  //  -- rsp[8] : receiver
+  // -----------------------------------
+
+  __ movq(rax, Operand(rsp, kPointerSize));
+
+  // Probe the stub cache.
+  Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC,
+                                         NOT_IN_LOOP,
+                                         MONOMORPHIC);
+  StubCache::GenerateProbe(masm, flags, rax, rcx, rbx, rdx);
+
+  // Cache miss: Jump to runtime.
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
+
 void LoadIC::GenerateMiss(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- rcx    : name
+  //  -- rsp[0] : return address
+  //  -- rsp[8] : receiver
+  // -----------------------------------
+
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
 void LoadIC::GenerateNormal(MacroAssembler* masm) {
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
 void LoadIC::GenerateStringLength(MacroAssembler* masm) {
   Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss)));
 }
 
 bool LoadIC::PatchInlinedLoad(Address address, Object* map, int index) {
-  UNIMPLEMENTED();
+  // TODO(X64): Implement this function.  Until then, the code is not patched.
   return false;
 }
 
 void StoreIC::Generate(MacroAssembler* masm, ExternalReference const& f) {
   // ----------- S t a t e -------------
   //  -- rax    : value
   //  -- rcx    : name
   //  -- rsp[0] : return address
   //  -- rsp[8] : receiver
   // -----------------------------------
@@ skipping 14 matching lines @@
 
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   Generate(masm, ExternalReference(IC_Utility(kStoreIC_Miss)));
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal