[cleanup] Drop handwritten KeyedStoreIC code

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 2998 matching lines @@
       StubFailureTrampolineFrameConstants::kArgumentsLengthOffset;
   __ mov(ebx, MemOperand(ebp, parameter_count_offset));
   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
   __ pop(ecx);
   int additional_offset =
       function_mode() == JS_FUNCTION_STUB_MODE ? kPointerSize : 0;
   __ lea(esp, MemOperand(esp, ebx, times_pointer_size, additional_offset));
   __ jmp(ecx);  // Return to IC Miss stub, continuation still on stack.
 }
 
-void KeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) {
-  __ EmitLoadTypeFeedbackVector(StoreWithVectorDescriptor::VectorRegister());
-  KeyedStoreICStub stub(isolate(), state());
-  stub.GenerateForTrampoline(masm);
-}
-
-// value is on the stack already.
-static void HandlePolymorphicStoreCase(MacroAssembler* masm, Register receiver,
-                                       Register key, Register vector,
-                                       Register slot, Register feedback,
-                                       bool is_polymorphic, Label* miss) {
-  // feedback initially contains the feedback array
-  Label next, next_loop, prepare_next;
-  Label load_smi_map, compare_map;
-  Label start_polymorphic;
-  Label pop_and_miss;
-
-  __ push(receiver);
-  // Value, vector and slot are passed on the stack, so no need to save/restore
-  // them.
-
-  Register receiver_map = receiver;
-  Register cached_map = vector;
-
-  // Receiver might not be a heap object.
-  __ JumpIfSmi(receiver, &load_smi_map);
-  __ mov(receiver_map, FieldOperand(receiver, 0));
-  __ bind(&compare_map);
-  __ mov(cached_map, FieldOperand(feedback, FixedArray::OffsetOfElementAt(0)));
-
-  // A named keyed store might have a 2 element array, all other cases can count
-  // on an array with at least 2 {map, handler} pairs, so they can go right
-  // into polymorphic array handling.
-  __ cmp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  __ j(not_equal, &start_polymorphic);
-
-  // found, now call handler.
-  Register handler = feedback;
-  DCHECK(handler.is(StoreWithVectorDescriptor::ValueRegister()));
-  __ mov(handler, FieldOperand(feedback, FixedArray::OffsetOfElementAt(1)));
-  __ pop(receiver);
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ jmp(handler);
-
-  // Polymorphic, we have to loop from 2 to N
-  __ bind(&start_polymorphic);
-  __ push(key);
-  Register counter = key;
-  __ mov(counter, Immediate(Smi::FromInt(2)));
-
-  if (!is_polymorphic) {
-    // If is_polymorphic is false, we may only have a two element array.
-    // Check against length now in that case.
-    __ cmp(counter, FieldOperand(feedback, FixedArray::kLengthOffset));
-    __ j(greater_equal, &pop_and_miss);
-  }
-
-  __ bind(&next_loop);
-  __ mov(cached_map, FieldOperand(feedback, counter, times_half_pointer_size,
-                                  FixedArray::kHeaderSize));
-  __ cmp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  __ j(not_equal, &prepare_next);
-  __ mov(handler, FieldOperand(feedback, counter, times_half_pointer_size,
-                               FixedArray::kHeaderSize + kPointerSize));
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ pop(key);
-  __ pop(receiver);
-  __ jmp(handler);
-
-  __ bind(&prepare_next);
-  __ add(counter, Immediate(Smi::FromInt(2)));
-  __ cmp(counter, FieldOperand(feedback, FixedArray::kLengthOffset));
-  __ j(less, &next_loop);
-
-  // We exhausted our array of map handler pairs.
-  __ bind(&pop_and_miss);
-  __ pop(key);
-  __ pop(receiver);
-  __ jmp(miss);
-
-  __ bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
-}
-
-
-static void HandleMonomorphicStoreCase(MacroAssembler* masm, Register receiver,
-                                       Register key, Register vector,
-                                       Register slot, Register weak_cell,
-                                       Label* miss) {
-  // The store ic value is on the stack.
-  DCHECK(weak_cell.is(StoreWithVectorDescriptor::ValueRegister()));
-
-  // feedback initially contains the feedback array
-  Label compare_smi_map;
-
-  // Move the weak map into the weak_cell register.
-  Register ic_map = weak_cell;
-  __ mov(ic_map, FieldOperand(weak_cell, WeakCell::kValueOffset));
-
-  // Receiver might not be a heap object.
-  __ JumpIfSmi(receiver, &compare_smi_map);
-  __ cmp(ic_map, FieldOperand(receiver, 0));
-  __ j(not_equal, miss);
-  __ mov(weak_cell, FieldOperand(vector, slot, times_half_pointer_size,
-                                 FixedArray::kHeaderSize + kPointerSize));
-  __ lea(weak_cell, FieldOperand(weak_cell, Code::kHeaderSize));
-  // jump to the handler.
-  __ jmp(weak_cell);
-
-  // In microbenchmarks, it made sense to unroll this code so that the call to
-  // the handler is duplicated for a HeapObject receiver and a Smi receiver.
-  __ bind(&compare_smi_map);
-  __ CompareRoot(ic_map, Heap::kHeapNumberMapRootIndex);
-  __ j(not_equal, miss);
-  __ mov(weak_cell, FieldOperand(vector, slot, times_half_pointer_size,
-                                 FixedArray::kHeaderSize + kPointerSize));
-  __ lea(weak_cell, FieldOperand(weak_cell, Code::kHeaderSize));
-  // jump to the handler.
-  __ jmp(weak_cell);
-}
-
-void KeyedStoreICStub::Generate(MacroAssembler* masm) {
-  GenerateImpl(masm, false);
-}
-
-void KeyedStoreICStub::GenerateForTrampoline(MacroAssembler* masm) {
-  GenerateImpl(masm, true);
-}
-
-
-static void HandlePolymorphicKeyedStoreCase(MacroAssembler* masm,
-                                            Register receiver, Register key,
-                                            Register vector, Register slot,
-                                            Register feedback, Label* miss) {
-  // feedback initially contains the feedback array
-  Label next, next_loop, prepare_next;
-  Label load_smi_map, compare_map;
-  Label transition_call;
-  Label pop_and_miss;
-
-  __ push(receiver);
-  // Value, vector and slot are passed on the stack, so no need to save/restore
-  // them.
-
-  Register receiver_map = receiver;
-  Register cached_map = vector;
-
-  // Receiver might not be a heap object.
-  __ JumpIfSmi(receiver, &load_smi_map);
-  __ mov(receiver_map, FieldOperand(receiver, 0));
-  __ bind(&compare_map);
-
-  // Polymorphic, we have to loop from 0 to N - 1
-  __ push(key);
-  // Current stack layout:
-  // - esp[0]    -- key
-  // - esp[4]    -- receiver
-  // - esp[8]    -- return address
-  // - esp[12]   -- vector
-  // - esp[16]   -- slot
-  // - esp[20]   -- value
-  //
-  // Required stack layout for handler call (see StoreWithVectorDescriptor):
-  // - esp[0]    -- return address
-  // - esp[4]    -- vector
-  // - esp[8]    -- slot
-  // - esp[12]   -- value
-  // - receiver, key, handler in registers.
-  Register counter = key;
-  __ mov(counter, Immediate(Smi::kZero));
-  __ bind(&next_loop);
-  __ mov(cached_map, FieldOperand(feedback, counter, times_half_pointer_size,
-                                  FixedArray::kHeaderSize));
-  __ cmp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  __ j(not_equal, &prepare_next);
-  __ mov(cached_map, FieldOperand(feedback, counter, times_half_pointer_size,
-                                  FixedArray::kHeaderSize + kPointerSize));
-  __ CompareRoot(cached_map, Heap::kUndefinedValueRootIndex);
-  __ j(not_equal, &transition_call);
-  __ mov(feedback, FieldOperand(feedback, counter, times_half_pointer_size,
-                                FixedArray::kHeaderSize + 2 * kPointerSize));
-  __ pop(key);
-  __ pop(receiver);
-  __ lea(feedback, FieldOperand(feedback, Code::kHeaderSize));
-  __ jmp(feedback);
-
-  __ bind(&transition_call);
-  // Current stack layout:
-  // - esp[0]    -- key
-  // - esp[4]    -- receiver
-  // - esp[8]    -- return address
-  // - esp[12]   -- vector
-  // - esp[16]   -- slot
-  // - esp[20]   -- value
-  //
-  // Required stack layout for handler call (see StoreTransitionDescriptor):
-  // - esp[0]    -- return address
-  // - esp[4]    -- vector
-  // - esp[8]    -- slot
-  // - esp[12]   -- value
-  // - receiver, key, map, handler in registers.
-  __ mov(feedback, FieldOperand(feedback, counter, times_half_pointer_size,
-                                FixedArray::kHeaderSize + 2 * kPointerSize));
-  __ lea(feedback, FieldOperand(feedback, Code::kHeaderSize));
-
-  __ mov(cached_map, FieldOperand(cached_map, WeakCell::kValueOffset));
-  // The weak cell may have been cleared.
-  __ JumpIfSmi(cached_map, &pop_and_miss);
-  DCHECK(!cached_map.is(StoreTransitionDescriptor::MapRegister()));
-  __ mov(StoreTransitionDescriptor::MapRegister(), cached_map);
-
-  // Call store transition handler using StoreTransitionDescriptor calling
-  // convention.
-  __ pop(key);
-  __ pop(receiver);
-  // Ensure that the transition handler we are going to call has the same
-  // number of stack arguments which means that we don't have to adapt them
-  // before the call.
-  STATIC_ASSERT(StoreWithVectorDescriptor::kStackArgumentsCount == 3);
-  STATIC_ASSERT(StoreTransitionDescriptor::kStackArgumentsCount == 3);
-  STATIC_ASSERT(StoreWithVectorDescriptor::kParameterCount -
-                    StoreWithVectorDescriptor::kValue ==
-                StoreTransitionDescriptor::kParameterCount -
-                    StoreTransitionDescriptor::kValue);
-  STATIC_ASSERT(StoreWithVectorDescriptor::kParameterCount -
-                    StoreWithVectorDescriptor::kSlot ==
-                StoreTransitionDescriptor::kParameterCount -
-                    StoreTransitionDescriptor::kSlot);
-  STATIC_ASSERT(StoreWithVectorDescriptor::kParameterCount -
-                    StoreWithVectorDescriptor::kVector ==
-                StoreTransitionDescriptor::kParameterCount -
-                    StoreTransitionDescriptor::kVector);
-  __ jmp(feedback);
-
-  __ bind(&prepare_next);
-  __ add(counter, Immediate(Smi::FromInt(3)));
-  __ cmp(counter, FieldOperand(feedback, FixedArray::kLengthOffset));
-  __ j(less, &next_loop);
-
-  // We exhausted our array of map handler pairs.
-  __ bind(&pop_and_miss);
-  __ pop(key);
-  __ pop(receiver);
-  __ jmp(miss);
-
-  __ bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
-}
-
-void KeyedStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) {
-  Register receiver = StoreWithVectorDescriptor::ReceiverRegister();  // edx
-  Register key = StoreWithVectorDescriptor::NameRegister();           // ecx
-  Register value = StoreWithVectorDescriptor::ValueRegister();        // eax
-  Register vector = StoreWithVectorDescriptor::VectorRegister();      // ebx
-  Register slot = StoreWithVectorDescriptor::SlotRegister();          // edi
-  Label miss;
-
-  if (StoreWithVectorDescriptor::kPassLastArgsOnStack) {
-    // Current stack layout:
-    // - esp[8]    -- value
-    // - esp[4]    -- slot
-    // - esp[0]    -- return address
-    STATIC_ASSERT(StoreDescriptor::kStackArgumentsCount == 2);
-    STATIC_ASSERT(StoreWithVectorDescriptor::kStackArgumentsCount == 3);
-    if (in_frame) {
-      __ RecordComment("[ StoreDescriptor -> StoreWithVectorDescriptor");
-      // If the vector is not on the stack, then insert the vector beneath
-      // return address in order to prepare for calling handler with
-      // StoreWithVector calling convention.
-      __ push(Operand(esp, 0));
-      __ mov(Operand(esp, 4), StoreWithVectorDescriptor::VectorRegister());
-      __ RecordComment("]");
-    } else {
-      __ mov(vector, Operand(esp, 1 * kPointerSize));
-    }
-    __ mov(slot, Operand(esp, 2 * kPointerSize));
-  }
-
-  Register scratch = value;
-  __ mov(scratch, FieldOperand(vector, slot, times_half_pointer_size,
-                               FixedArray::kHeaderSize));
-
-  // Is it a weak cell?
-  Label try_array;
-  Label not_array, smi_key, key_okay;
-  __ CompareRoot(FieldOperand(scratch, 0), Heap::kWeakCellMapRootIndex);
-  __ j(not_equal, &try_array);
-  HandleMonomorphicStoreCase(masm, receiver, key, vector, slot, scratch, &miss);
-
-  // Is it a fixed array?
-  __ bind(&try_array);
-  __ CompareRoot(FieldOperand(scratch, 0), Heap::kFixedArrayMapRootIndex);
-  __ j(not_equal, &not_array);
-  HandlePolymorphicKeyedStoreCase(masm, receiver, key, vector, slot, scratch,
-                                  &miss);
-
-  __ bind(&not_array);
-  Label try_poly_name;
-  __ CompareRoot(scratch, 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.
-  __ cmp(key, scratch);
-  __ j(not_equal, &miss);
-  // If the name comparison succeeded, we know we have a fixed array with
-  // at least one map/handler pair.
-  __ mov(scratch, FieldOperand(vector, slot, times_half_pointer_size,
-                               FixedArray::kHeaderSize + kPointerSize));
-  HandlePolymorphicStoreCase(masm, receiver, key, vector, slot, scratch, false,
-                             &miss);
-
-  __ bind(&miss);
-  KeyedStoreIC::GenerateMiss(masm);
-}
-
-
 void CallICTrampolineStub::Generate(MacroAssembler* masm) {
   __ EmitLoadTypeFeedbackVector(ebx);
   CallICStub stub(isolate(), state());
   __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (masm->isolate()->function_entry_hook() != NULL) {
     ProfileEntryHookStub stub(masm->isolate());
@@ skipping 1400 matching lines @@
                            kStackUnwindSpace, nullptr, return_value_operand,
                            NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32