Revert of Vector ICs: platform support for vector-based stores.

src/x64/code-stubs-x64.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_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 4486 matching lines @@
   GenerateImpl(masm, false);
 }
 
 
 void VectorStoreICStub::GenerateForTrampoline(MacroAssembler* masm) {
   GenerateImpl(masm, true);
 }
 
 
 void VectorStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
-  Register receiver = VectorStoreICDescriptor::ReceiverRegister();  // rdx
-  Register key = VectorStoreICDescriptor::NameRegister();           // rcx
-  Register vector = VectorStoreICDescriptor::VectorRegister();      // rbx
-  Register slot = VectorStoreICDescriptor::SlotRegister();          // rdi
-  DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax));         // rax
-  Register feedback = r8;
-  Register integer_slot = r9;
-  Register receiver_map = r11;
-  DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map));
+  Label miss;
 
-  __ SmiToInteger32(integer_slot, slot);
-  __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size,
-                                 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,
-                        integer_slot, &compare_map, &load_smi_map, &try_array);
-
-  // Is it a fixed array?
-  __ bind(&try_array);
-  __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex);
-  __ j(not_equal, &not_array);
-  HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, true,
-                   &miss);
-
-  __ bind(&not_array);
-  __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex);
-  __ j(not_equal, &miss);
-
-  Code::Flags code_flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::STORE_IC));
-  masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, code_flags,
-                                               receiver, key, feedback, no_reg);
-
+  // TODO(mvstanton): Implement.
   __ bind(&miss);
   StoreIC::GenerateMiss(masm);
-
-  __ bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
 }
 
 
 void VectorKeyedStoreICStub::Generate(MacroAssembler* masm) {
   GenerateImpl(masm, false);
 }
 
 
 void VectorKeyedStoreICStub::GenerateForTrampoline(MacroAssembler* masm) {
   GenerateImpl(masm, true);
 }
 
 
-static void HandlePolymorphicKeyedStoreCase(MacroAssembler* masm,
-                                            Register receiver_map,
-                                            Register feedback, Register scratch,
-                                            Register scratch1,
-                                            Register scratch2, Label* miss) {
-  // feedback initially contains the feedback array
-  Label next, next_loop, prepare_next;
-  Label transition_call;
-
-  Register cached_map = scratch;
-  Register counter = scratch1;
-  Register length = scratch2;
-
-  // Polymorphic, we have to loop from 0 to N - 1
-  __ movp(counter, Immediate(0));
-  __ movp(length, FieldOperand(feedback, FixedArray::kLengthOffset));
-  __ SmiToInteger32(length, length);
-
-  __ bind(&next_loop);
-  __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size,
-                                   FixedArray::kHeaderSize));
-  __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  __ j(not_equal, &prepare_next);
-  __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size,
-                                   FixedArray::kHeaderSize + kPointerSize));
-  __ CompareRoot(cached_map, Heap::kUndefinedValueRootIndex);
-  __ j(not_equal, &transition_call);
-  __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size,
-                                 FixedArray::kHeaderSize + 2 * kPointerSize));
-  __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize));
-  __ jmp(feedback);
-
-  __ bind(&transition_call);
-  DCHECK(receiver_map.is(VectorStoreTransitionDescriptor::MapRegister()));
-  __ movp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  // The weak cell may have been cleared.
-  __ JumpIfSmi(receiver_map, miss);
-  // Get the handler in value.
-  __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size,
-                                 FixedArray::kHeaderSize + 2 * kPointerSize));
-  __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize));
-  __ jmp(feedback);
-
-  __ bind(&prepare_next);
-  __ addl(counter, Immediate(3));
-  __ cmpl(counter, length);
-  __ j(less, &next_loop);
-
-  // We exhausted our array of map handler pairs.
-  __ jmp(miss);
-}
-
-
 void VectorKeyedStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
-  Register receiver = VectorStoreICDescriptor::ReceiverRegister();  // rdx
-  Register key = VectorStoreICDescriptor::NameRegister();           // rcx
-  Register vector = VectorStoreICDescriptor::VectorRegister();      // rbx
-  Register slot = VectorStoreICDescriptor::SlotRegister();          // rdi
-  DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax));         // rax
-  Register feedback = r8;
-  Register integer_slot = r9;
-  Register receiver_map = r11;
-  DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map));
+  Label miss;
 
-  __ SmiToInteger32(integer_slot, slot);
-  __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size,
-                                 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,
-                        integer_slot, &compare_map, &load_smi_map, &try_array);
-
-  // Is it a fixed array?
-  __ bind(&try_array);
-  __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex);
-  __ j(not_equal, &not_array);
-  HandlePolymorphicKeyedStoreCase(masm, receiver_map, feedback, integer_slot,
-                                  r15, r14, &miss);
-
-  __ bind(&not_array);
-  Label try_poly_name;
-  __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex);
-  __ j(not_equal, &try_poly_name);
-
-  Handle<Code> megamorphic_stub =
-      KeyedStoreIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState());
-  __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET);
-
-  __ bind(&try_poly_name);
-  // We might have a name in feedback, and a fixed array in the next slot.
-  __ cmpp(key, feedback);
-  __ j(not_equal, &miss);
-  // If the name comparison succeeded, we know we have a fixed array with
-  // at least one map/handler pair.
-  __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size,
-                                 FixedArray::kHeaderSize + kPointerSize));
-  HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, false,
-                   &miss);
-
+  // TODO(mvstanton): Implement.
   __ bind(&miss);
   KeyedStoreIC::GenerateMiss(masm);
-
-  __ bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
 }
 
 
 void CallICTrampolineStub::Generate(MacroAssembler* masm) {
   EmitLoadTypeFeedbackVector(masm, rbx);
   CallICStub stub(isolate(), state());
   __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
@@ skipping 942 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64