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

src/interface-descriptors.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/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
 
 namespace {
@@ skipping 91 matching lines @@
 
 void StoreTransitionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ReceiverRegister(), NameRegister(), ValueRegister(),
                           MapRegister()};
 
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
+void VectorStoreTransitionDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  if (SlotRegister().is(no_reg)) {
+    Register registers[] = {ReceiverRegister(), NameRegister(), ValueRegister(),
+                            MapRegister(), VectorRegister()};
+    data->InitializePlatformSpecific(arraysize(registers), registers);
+  } else {
+    Register registers[] = {ReceiverRegister(), NameRegister(),
+                            ValueRegister(),    MapRegister(),
+                            SlotRegister(),     VectorRegister()};
+    data->InitializePlatformSpecific(arraysize(registers), registers);
+  }
+}
+
+
 Type::FunctionType*
 StoreTransitionDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();
   Type::FunctionType* function =
       Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 4, zone);
   function->InitParameter(0, AnyTagged(zone));  // Receiver
   function->InitParameter(1, AnyTagged(zone));  // Name
   function->InitParameter(2, AnyTagged(zone));  // Value
   function->InitParameter(3, AnyTagged(zone));  // Map
@@ skipping 99 matching lines @@
   Register registers[] = {ReceiverRegister(), NameRegister(), SlotRegister(),
                           VectorRegister()};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 Type::FunctionType*
 VectorStoreTransitionDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();
-  Type::FunctionType* function =
-      Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 6, zone);
-  function->InitParameter(0, AnyTagged(zone));  // receiver
-  function->InitParameter(1, AnyTagged(zone));  // name
-  function->InitParameter(2, AnyTagged(zone));  // value
-  function->InitParameter(3, SmiType(zone));    // slot
-  function->InitParameter(4, AnyTagged(zone));  // vector
-  function->InitParameter(5, AnyTagged(zone));  // map
+  bool has_slot = !VectorStoreTransitionDescriptor::SlotRegister().is(no_reg);
+  int arg_count = has_slot ? 6 : 5;
+  Type::FunctionType* function = Type::FunctionType::New(
+      AnyTagged(zone), Type::Undefined(), arg_count, zone);
+  int index = 0;
+  function->InitParameter(index++, AnyTagged(zone));  // receiver
+  function->InitParameter(index++, AnyTagged(zone));  // name
+  function->InitParameter(index++, AnyTagged(zone));  // value
+  function->InitParameter(index++, AnyTagged(zone));  // map
+  if (has_slot) {
+    function->InitParameter(index++, SmiType(zone));  // slot
+  }
+  function->InitParameter(index++, AnyTagged(zone));  // vector
   return function;
 }
 
 
 Type::FunctionType*
 VectorStoreICDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();
   Type::FunctionType* function =
       Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 5, zone);
@@ skipping 263 matching lines @@
       Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 5, zone);
   function->InitParameter(0, Type::Receiver());
   function->InitParameter(1, SmiType(zone));
   function->InitParameter(2, AnyTagged(zone));
   function->InitParameter(3, AnyTagged(zone));
   function->InitParameter(4, AnyTagged(zone));
   return function;
 }
 }  // namespace internal
 }  // namespace v8