[ic] Delete old KeyedLoadIC code

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 2956 matching lines @@
   __ Ldr(x1, MemOperand(fp, parameter_count_offset));
   if (function_mode() == JS_FUNCTION_STUB_MODE) {
     __ Add(x1, x1, 1);
   }
   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
   __ Drop(x1);
   // Return to IC Miss stub, continuation still on stack.
   __ Ret();
 }
 
-
-void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) {
-  __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister());
-  KeyedLoadICStub stub(isolate());
-  stub.GenerateForTrampoline(masm);
-}
-
-
 void CallICTrampolineStub::Generate(MacroAssembler* masm) {
   __ EmitLoadTypeFeedbackVector(x2);
   CallICStub stub(isolate(), state());
   __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
 static void HandleArrayCases(MacroAssembler* masm, Register feedback,
                              Register receiver_map, Register scratch1,
                              Register scratch2, bool is_polymorphic,
@@ skipping 77 matching lines @@
   __ B(ne, try_array);
 
   Register handler = feedback;
   __ Add(handler, vector, Operand::UntagSmiAndScale(slot, kPointerSizeLog2));
   __ Ldr(handler,
          FieldMemOperand(handler, FixedArray::kHeaderSize + kPointerSize));
   __ Add(handler, handler, Code::kHeaderSize - kHeapObjectTag);
   __ Jump(handler);
 }
 
-
-void KeyedLoadICStub::Generate(MacroAssembler* masm) {
-  GenerateImpl(masm, false);
-}
-
-
-void KeyedLoadICStub::GenerateForTrampoline(MacroAssembler* masm) {
-  GenerateImpl(masm, true);
-}
-
-
-void KeyedLoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
-  Register receiver = LoadWithVectorDescriptor::ReceiverRegister();  // x1
-  Register key = LoadWithVectorDescriptor::NameRegister();           // x2
-  Register vector = LoadWithVectorDescriptor::VectorRegister();      // x3
-  Register slot = LoadWithVectorDescriptor::SlotRegister();          // x0
-  Register feedback = x4;
-  Register receiver_map = x5;
-  Register scratch1 = x6;
-
-  __ Add(feedback, vector, Operand::UntagSmiAndScale(slot, kPointerSizeLog2));
-  __ Ldr(feedback, FieldMemOperand(feedback, FixedArray::kHeaderSize));
-
-  // Try to quickly handle the monomorphic case without knowing for sure
-  // if we have a weak cell in feedback. We do know it's safe to look
-  // at WeakCell::kValueOffset.
-  Label try_array, load_smi_map, compare_map;
-  Label not_array, miss;
-  HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, slot,
-                        scratch1, &compare_map, &load_smi_map, &try_array);
-
-  __ Bind(&try_array);
-  // Is it a fixed array?
-  __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset));
-  __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, &not_array);
-
-  // We have a polymorphic element handler.
-  Label polymorphic, try_poly_name;
-  __ Bind(&polymorphic);
-  HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, true, &miss);
-
-  __ Bind(&not_array);
-  // Is it generic?
-  __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex,
-                   &try_poly_name);
-  Handle<Code> megamorphic_stub =
-      KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState());
-  __ Jump(megamorphic_stub, RelocInfo::CODE_TARGET);
-
-  __ Bind(&try_poly_name);
-  // We might have a name in feedback, and a fixed array in the next slot.
-  __ Cmp(key, feedback);
-  __ B(ne, &miss);
-  // If the name comparison succeeded, we know we have a fixed array with
-  // at least one map/handler pair.
-  __ Add(feedback, vector, Operand::UntagSmiAndScale(slot, kPointerSizeLog2));
-  __ Ldr(feedback,
-         FieldMemOperand(feedback, FixedArray::kHeaderSize + kPointerSize));
-  HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, false, &miss);
-
-  __ Bind(&miss);
-  KeyedLoadIC::GenerateMiss(masm);
-
-  __ Bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
-}
-
 void KeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) {
   __ EmitLoadTypeFeedbackVector(StoreWithVectorDescriptor::VectorRegister());
   KeyedStoreICStub stub(isolate(), state());
   stub.GenerateForTrampoline(masm);
 }
 
 void KeyedStoreICStub::Generate(MacroAssembler* masm) {
   GenerateImpl(masm, false);
 }
 
@@ skipping 1828 matching lines @@
                            kStackUnwindSpace, NULL, spill_offset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64