[stubs] Drop LoadICStub and LoadICTrampolineStub (the non-TurboFan implementations of LoadIC dispatc

src/arm64/code-stubs-arm64.cc

Index: src/arm64/code-stubs-arm64.cc
diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
index 0b9706c4deff71b127f484fae265e9b8a66d90b1..3a98e55f2502290e182991fcdf5d26fb4ef2685e 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -2980,13 +2980,6 @@ void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
 }
 
 
-void LoadICTrampolineStub::Generate(MacroAssembler* masm) {
-  __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister());
-  LoadICStub stub(isolate());
-  stub.GenerateForTrampoline(masm);
-}
-
-
 void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) {
   __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister());
   KeyedLoadICStub stub(isolate());
@@ -3001,14 +2994,6 @@ void CallICTrampolineStub::Generate(MacroAssembler* masm) {
 }
 
 
-void LoadICStub::Generate(MacroAssembler* masm) { GenerateImpl(masm, false); }
-
-
-void LoadICStub::GenerateForTrampoline(MacroAssembler* masm) {
-  GenerateImpl(masm, true);
-}
-
-
 static void HandleArrayCases(MacroAssembler* masm, Register feedback,
                              Register receiver_map, Register scratch1,
                              Register scratch2, bool is_polymorphic,
@@ -3100,46 +3085,6 @@ static void HandleMonomorphicCase(MacroAssembler* masm, Register receiver,
 }
 
 
-void LoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
-  Register receiver = LoadWithVectorDescriptor::ReceiverRegister();  // x1
-  Register name = 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);
-
-  // Is it a fixed array?
-  __ Bind(&try_array);
-  __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset));
-  __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, &not_array);
-  HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, true, &miss);
-
-  __ Bind(&not_array);
-  __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex, &miss);
-  masm->isolate()->load_stub_cache()->GenerateProbe(
-      masm, receiver, name, feedback, receiver_map, scratch1, x7);
-
-  __ Bind(&miss);
-  LoadIC::GenerateMiss(masm);
-
-  __ Bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
-}
-
-
 void KeyedLoadICStub::Generate(MacroAssembler* masm) {
   GenerateImpl(masm, false);
 }