Increase coverage of global loads in optimized code...

src/x64/lithium-codegen-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 1966 matching lines @@
     // call to return the value in the same register.
     __ push(rax);
     __ CallRuntime(Runtime::kTraceExit, 1);
   }
   __ movq(rsp, rbp);
   __ pop(rbp);
   __ Ret((ParameterCount() + 1) * kPointerSize, rcx);
 }
 
 
-void LCodeGen::DoLoadGlobal(LLoadGlobal* instr) {
+void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) {
   Register result = ToRegister(instr->result());
   if (result.is(rax)) {
     __ load_rax(instr->hydrogen()->cell().location(),
                 RelocInfo::GLOBAL_PROPERTY_CELL);
   } else {
     __ movq(result, instr->hydrogen()->cell(), RelocInfo::GLOBAL_PROPERTY_CELL);
     __ movq(result, Operand(result, 0));
   }
   if (instr->hydrogen()->check_hole_value()) {
     __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
     DeoptimizeIf(equal, instr->environment());
   }
 }
 
 
+void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
+  ASSERT(ToRegister(instr->result()).is(rax));
+
+  __ movq(rax, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)));
+  __ Move(rcx, instr->name());
+  RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET :
+                                               RelocInfo::CODE_TARGET_CONTEXT;
+  Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
+  CallCode(ic, mode, instr);
+}
+
+
 void LCodeGen::DoStoreGlobal(LStoreGlobal* instr) {
   Register value = ToRegister(instr->InputAt(0));
   Register temp = ToRegister(instr->TempAt(0));
   ASSERT(!value.is(temp));
   bool check_hole = instr->hydrogen()->check_hole_value();
   if (!check_hole && value.is(rax)) {
     __ store_rax(instr->hydrogen()->cell().location(),
                  RelocInfo::GLOBAL_PROPERTY_CELL);
     return;
   }
@@ skipping 1750 matching lines @@
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64