X87: [ic] Delete old KeyedLoadIC code.

  port 3f6e0a4e (r40354)

  original commit message:
  RIP, handwritten KeyedLoadICStub, handwritten KeyedLoadIC_Megamorphic,
  and hydrogenized KeyedLoadGeneric!

BUG=

Review-Url: https://codereview.chromium.org/2430613003
Cr-Commit-Position: refs/heads/master@{#40388}

src/x87/code-stubs-x87.cc

@@ -2834,117 +2834,6 @@ void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
   __ jmp(ecx);  // Return to IC Miss stub, continuation still on stack.
 }
 
-static void HandleArrayCases(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;
-
-  __ push(receiver);
-  __ push(vector);
-
-  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 load 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, is_polymorphic ? &start_polymorphic : &next);
-
-  // found, now call handler.
-  Register handler = feedback;
-  __ mov(handler, FieldOperand(feedback, FixedArray::OffsetOfElementAt(1)));
-  __ pop(vector);
-  __ pop(receiver);
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ jmp(handler);
-
-  if (!is_polymorphic) {
-    __ bind(&next);
-    __ cmp(FieldOperand(feedback, FixedArray::kLengthOffset),
-           Immediate(Smi::FromInt(2)));
-    __ j(not_equal, &start_polymorphic);
-    __ pop(vector);
-    __ pop(receiver);
-    __ jmp(miss);
-  }
-
-  // Polymorphic, we have to loop from 2 to N
-  __ bind(&start_polymorphic);
-  __ push(key);
-  Register counter = key;
-  __ mov(counter, Immediate(Smi::FromInt(2)));
-  __ 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));
-  __ pop(key);
-  __ pop(vector);
-  __ pop(receiver);
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ 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.
-  __ pop(key);
-  __ pop(vector);
-  __ pop(receiver);
-  __ jmp(miss);
-
-  __ bind(&load_smi_map);
-  __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex);
-  __ jmp(&compare_map);
-}
-
-
-static void HandleMonomorphicCase(MacroAssembler* masm, Register receiver,
-                                  Register key, Register vector, Register slot,
-                                  Register weak_cell, Label* miss) {
-  // 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);
-  Register handler = weak_cell;
-  __ mov(handler, FieldOperand(vector, slot, times_half_pointer_size,
-                               FixedArray::kHeaderSize + kPointerSize));
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ jmp(handler);
-
-  // 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(handler, FieldOperand(vector, slot, times_half_pointer_size,
-                               FixedArray::kHeaderSize + kPointerSize));
-  __ lea(handler, FieldOperand(handler, Code::kHeaderSize));
-  __ jmp(handler);
-}
-
 void KeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) {
   __ EmitLoadTypeFeedbackVector(StoreWithVectorDescriptor::VectorRegister());
   KeyedStoreICStub stub(isolate(), state());