Use a simpler KeyedStoreGeneric stub

src/ic/ia32/ic-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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/codegen.h"
 #include "src/ic/ic.h"
@@ skipping 489 matching lines @@
   __ mov(unmapped_location, value);
   __ lea(edi, unmapped_location);
   __ mov(edx, value);
   __ RecordWrite(ebx, edi, edx, kDontSaveFPRegs);
   __ Ret();
   __ bind(&slow);
   GenerateMiss(masm);
 }
 
 
-static void KeyedStoreGenerateGenericHelper(
+static void KeyedStoreGenerateMegamorphicHelper(
     MacroAssembler* masm, Label* fast_object, Label* fast_double, Label* slow,
     KeyedStoreCheckMap check_map, KeyedStoreIncrementLength increment_length) {
   Label transition_smi_elements;
   Label finish_object_store, non_double_value, transition_double_elements;
   Label fast_double_without_map_check;
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register key = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
   DCHECK(receiver.is(edx));
   DCHECK(key.is(ecx));
@@ skipping 117 matching lines @@
   __ LoadTransitionedArrayMapConditional(FAST_DOUBLE_ELEMENTS, FAST_ELEMENTS,
                                          ebx, edi, slow);
   mode = AllocationSite::GetMode(FAST_DOUBLE_ELEMENTS, FAST_ELEMENTS);
   ElementsTransitionGenerator::GenerateDoubleToObject(masm, receiver, key,
                                                       value, ebx, mode, slow);
   __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
   __ jmp(&finish_object_store);
 }
 
 
-void KeyedStoreIC::GenerateGeneric(
-    MacroAssembler* masm, StrictMode strict_mode,
-    KeyedStoreStubCacheRequirement handler_requirement) {
+void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
+                                       StrictMode strict_mode) {
   // Return address is on the stack.
   Label slow, fast_object, fast_object_grow;
   Label fast_double, fast_double_grow;
   Label array, extra, check_if_double_array, maybe_name_key, miss;
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register key = StoreDescriptor::NameRegister();
   DCHECK(receiver.is(edx));
   DCHECK(key.is(ecx));
 
   // Check that the object isn't a smi.
@@ skipping 28 matching lines @@
 
   __ bind(&maybe_name_key);
   __ mov(ebx, FieldOperand(key, HeapObject::kMapOffset));
   __ movzx_b(ebx, FieldOperand(ebx, Map::kInstanceTypeOffset));
   __ JumpIfNotUniqueNameInstanceType(ebx, &slow);
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, flags, false, receiver,
                                                key, ebx, no_reg);
   // Cache miss.
-  if (handler_requirement == kCallRuntimeOnMissingHandler) {
-    __ jmp(&slow);
-  } else {
-    DCHECK(handler_requirement == kMissOnMissingHandler);
-    __ jmp(&miss);
-  }
+  __ jmp(&miss);
 
   // Extra capacity case: Check if there is extra capacity to
   // perform the store and update the length. Used for adding one
   // element to the array by writing to array[array.length].
   __ bind(&extra);
   // receiver is a JSArray.
   // key is a smi.
   // ebx: receiver->elements, a FixedArray
   // edi: receiver map
   // flags: compare (key, receiver.length())
@@ skipping 18 matching lines @@
   // receiver is a JSArray.
   // key is a smi.
   // edi: receiver map
   __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
 
   // Check the key against the length in the array and fall through to the
   // common store code.
   __ cmp(key, FieldOperand(receiver, JSArray::kLengthOffset));  // Compare smis.
   __ j(above_equal, &extra);
 
-  KeyedStoreGenerateGenericHelper(masm, &fast_object, &fast_double, &slow,
-                                  kCheckMap, kDontIncrementLength);
-  KeyedStoreGenerateGenericHelper(masm, &fast_object_grow, &fast_double_grow,
-                                  &slow, kDontCheckMap, kIncrementLength);
+  KeyedStoreGenerateMegamorphicHelper(masm, &fast_object, &fast_double, &slow,
+                                      kCheckMap, kDontIncrementLength);
+  KeyedStoreGenerateMegamorphicHelper(masm, &fast_object_grow,
+                                      &fast_double_grow, &slow, kDontCheckMap,
+                                      kIncrementLength);
 
-  if (handler_requirement == kMissOnMissingHandler) {
-    __ bind(&miss);
-    GenerateMiss(masm);
-  }
+  __ bind(&miss);
+  GenerateMiss(masm);
 }
 
 
 void LoadIC::GenerateNormal(MacroAssembler* masm) {
   Register dictionary = eax;
   DCHECK(!dictionary.is(LoadDescriptor::ReceiverRegister()));
   DCHECK(!dictionary.is(LoadDescriptor::NameRegister()));
 
   Label slow;
 
@@ skipping 209 matching lines @@
   Condition cc =
       (check == ENABLE_INLINED_SMI_CHECK)
           ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero)
           : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry);
   *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32