VectorICs: New interface descriptor for vector transitioning stores.

src/interface-descriptors.h

 // Copyright 2014 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.
 
 #ifndef V8_CALL_INTERFACE_DESCRIPTOR_H_
 #define V8_CALL_INTERFACE_DESCRIPTOR_H_
 
 #include "src/assembler.h"
 #include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 class PlatformInterfaceDescriptor;
 
 #define INTERFACE_DESCRIPTOR_LIST(V)          \
   V(Load)                                     \
   V(Store)                                    \
   V(StoreTransition)                          \
+  V(VectorStoreTransition)                    \
   V(VectorStoreICTrampoline)                  \
   V(VectorStoreIC)                            \
   V(Instanceof)                               \
   V(LoadWithVector)                           \
   V(FastNewClosure)                           \
   V(FastNewContext)                           \
   V(ToNumber)                                 \
   V(ToObject)                                 \
   V(NumberToString)                           \
   V(Typeof)                                   \
@@ skipping 226 matching lines @@
 
   // Extends StoreDescriptor with Map parameter.
   enum ParameterIndices {
     kReceiverIndex,
     kNameIndex,
     kValueIndex,
     kMapIndex,
     kParameterCount
   };
 
-  // MapRegister() is no_reg on ia32, instead it's on the stack.
   static const Register MapRegister();
 };
 
+
+class VectorStoreTransitionDescriptor : public StoreDescriptor {
+ public:
+  DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(VectorStoreTransitionDescriptor,
+                                               StoreDescriptor)
+
+  // Extends StoreDescriptor with Map parameter.
+  enum ParameterIndices {
+    kReceiverIndex,
+    kNameIndex,
+    kValueIndex,
+    kSlotIndex,
+    kVectorIndex,
+    kMapIndex,
+    kParameterCount
+  };
+
+  // These registers are no_reg for ia32, using the stack instead.
+  static const Register SlotRegister();
+  static const Register VectorRegister();
+  static const Register MapRegister();
+};
+
 
 class InstanceofDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(InstanceofDescriptor, CallInterfaceDescriptor)
 
   enum ParameterIndices { kLeftIndex, kRightIndex, kParameterCount };
   static const Register left();
   static const Register right();
 };
 
@@ skipping 372 matching lines @@
 }  // namespace v8::internal
 
 
 #if V8_TARGET_ARCH_ARM64
 #include "src/arm64/interface-descriptors-arm64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "src/arm/interface-descriptors-arm.h"
 #endif
 
 #endif  // V8_CALL_INTERFACE_DESCRIPTOR_H_