Vector ICs: Get rid of stack arguments on ia32 transitioning stores.

src/ia32/interface-descriptors-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/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 17 matching lines @@
 
 
 const Register VectorStoreICDescriptor::VectorRegister() { return ebx; }
 
 
 const Register VectorStoreTransitionDescriptor::SlotRegister() {
   return no_reg;
 }
 
 
-const Register VectorStoreTransitionDescriptor::VectorRegister() {
-  return no_reg;
-}
+const Register VectorStoreTransitionDescriptor::VectorRegister() { return ebx; }
 
 
-const Register VectorStoreTransitionDescriptor::MapRegister() { return no_reg; }
+const Register VectorStoreTransitionDescriptor::MapRegister() { return edi; }
 
 
 const Register StoreTransitionDescriptor::MapRegister() { return ebx; }
 
 
 const Register LoadGlobalViaContextDescriptor::SlotRegister() { return ebx; }
 
 
 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return ebx; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return eax; }
@@ skipping 24 matching lines @@
 
 const Register MathPowIntegerDescriptor::exponent() {
   return MathPowTaggedDescriptor::exponent();
 }
 
 
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return eax; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return ebx; }
 
 
-void VectorStoreTransitionDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {ReceiverRegister(), NameRegister(), ValueRegister()};
-  // The other three parameters are on the stack in ia32.
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ebx};
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
 
 void FastNewContextDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {edi};
@@ skipping 312 matching lines @@
       ecx,  // address of first argument (argv)
       ebx   // the runtime function to call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32