[ic] LoadGlobalIC caches PropertyCells in the feedback vector.

src/arm64/code-stubs-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 5241 matching lines @@
   }
   __ B(&done_allocate);
 
   // Fall back to %NewStrictArguments.
   __ Bind(&too_big_for_new_space);
   __ Push(x1);
   __ TailCallRuntime(Runtime::kNewStrictArguments);
 }
 
 
-void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) {
-  Register context = cp;
-  Register result = x0;
-  Register slot = x2;
-  Label slow_case;
-
-  // Go up the context chain to the script context.
-  for (int i = 0; i < depth(); ++i) {
-    __ Ldr(result, ContextMemOperand(context, Context::PREVIOUS_INDEX));
-    context = result;
-  }
-
-  // Load the PropertyCell value at the specified slot.
-  __ Add(result, context, Operand(slot, LSL, kPointerSizeLog2));
-  __ Ldr(result, ContextMemOperand(result));
-  __ Ldr(result, FieldMemOperand(result, PropertyCell::kValueOffset));
-
-  // If the result is not the_hole, return. Otherwise, handle in the runtime.
-  __ JumpIfRoot(result, Heap::kTheHoleValueRootIndex, &slow_case);
-  __ Ret();
-
-  // Fallback to runtime.
-  __ Bind(&slow_case);
-  __ SmiTag(slot);
-  __ Push(slot);
-  __ TailCallRuntime(Runtime::kLoadGlobalViaContext);
-}
-
-
 void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) {
   Register context = cp;
   Register value = x0;
   Register slot = x2;
   Register context_temp = x10;
   Register cell = x10;
   Register cell_details = x11;
   Register cell_value = x12;
   Register cell_value_map = x13;
   Register value_map = x14;
@@ skipping 448 matching lines @@
                            kStackUnwindSpace, NULL, spill_offset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64