[ic] LoadGlobalIC caches PropertyCells in the feedback vector.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 5100 matching lines @@
     __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
     __ Push(Operand(edx, StandardFrameConstants::kFunctionOffset));
   } else {
     __ Push(Operand(ebp, StandardFrameConstants::kFunctionOffset));
   }
   __ PushReturnAddressFrom(ecx);
   __ TailCallRuntime(Runtime::kNewStrictArguments);
 }
 
 
-void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) {
-  Register context_reg = esi;
-  Register slot_reg = ebx;
-  Register result_reg = eax;
-  Label slow_case;
-
-  // Go up context chain to the script context.
-  for (int i = 0; i < depth(); ++i) {
-    __ mov(result_reg, ContextOperand(context_reg, Context::PREVIOUS_INDEX));
-    context_reg = result_reg;
-  }
-
-  // Load the PropertyCell value at the specified slot.
-  __ mov(result_reg, ContextOperand(context_reg, slot_reg));
-  __ mov(result_reg, FieldOperand(result_reg, PropertyCell::kValueOffset));
-
-  // Check that value is not the_hole.
-  __ CompareRoot(result_reg, Heap::kTheHoleValueRootIndex);
-  __ j(equal, &slow_case, Label::kNear);
-  __ Ret();
-
-  // Fallback to the runtime.
-  __ bind(&slow_case);
-  __ SmiTag(slot_reg);
-  __ Pop(result_reg);  // Pop return address.
-  __ Push(slot_reg);
-  __ Push(result_reg);  // Push return address.
-  __ TailCallRuntime(Runtime::kLoadGlobalViaContext);
-}
-
-
 void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) {
   Register context_reg = esi;
   Register slot_reg = ebx;
   Register value_reg = eax;
   Register cell_reg = edi;
   Register cell_details_reg = edx;
   Register cell_value_reg = ecx;
   Label fast_heapobject_case, fast_smi_case, slow_case;
 
   if (FLAG_debug_code) {
@@ skipping 487 matching lines @@
                            kStackUnwindSpace, nullptr, return_value_operand,
                            NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32