Vector ICs: Changes to the IC system to support vector-based stores.

src/ic/ic.h

 // 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.
 
 #ifndef V8_IC_H_
 #define V8_IC_H_
 
 #include "src/ic/ic-state.h"
 #include "src/macro-assembler.h"
 #include "src/messages.h"
@@ skipping 96 matching lines @@
     return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC;
   }
 
   static bool IsCleared(FeedbackNexus* nexus) {
     InlineCacheState state = nexus->StateFromFeedback();
     return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC;
   }
 
   static bool ICUseVector(Code::Kind kind) {
     return kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC ||
-           kind == Code::CALL_IC;
+           kind == Code::CALL_IC ||
+           (FLAG_vector_stores &&
+            (kind == Code::STORE_IC || kind == Code::KEYED_STORE_IC));
   }
 
  protected:
   // Get the call-site target; used for determining the state.
   Handle<Code> target() const { return target_; }
 
   Address fp() const { return fp_; }
   Address pc() const { return *pc_address_; }
   Isolate* isolate() const { return isolate_; }
 
@@ skipping 362 matching lines @@
   friend class IC;
 };
 
 
 class StoreIC : public IC {
  public:
   static ExtraICState ComputeExtraICState(LanguageMode flag) {
     return StoreICState(flag).GetExtraICState();
   }
 
-  StoreIC(FrameDepth depth, Isolate* isolate) : IC(depth, isolate) {
+  StoreIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL)
+      : IC(depth, isolate, nexus) {
     DCHECK(IsStoreStub());
   }
 
   LanguageMode language_mode() const {
     return StoreICState::GetLanguageMode(extra_ic_state());
   }
 
   // Code generators for stub routines. Only called once at startup.
   static void GenerateSlow(MacroAssembler* masm);
   static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); }
@@ skipping 13 matching lines @@
       Isolate* isolate, LanguageMode language_mode, State initialization_state);
 
   MUST_USE_RESULT MaybeHandle<Object> Store(
       Handle<Object> object, Handle<Name> name, Handle<Object> value,
       JSReceiver::StoreFromKeyed store_mode =
           JSReceiver::CERTAINLY_NOT_STORE_FROM_KEYED);
 
   bool LookupForWrite(LookupIterator* it, Handle<Object> value,
                       JSReceiver::StoreFromKeyed store_mode);
 
+  static void Clear(Isolate* isolate, Code* host, StoreICNexus* nexus);
+
  protected:
   // Stub accessors.
   Handle<Code> megamorphic_stub() override;
   Handle<Code> slow_stub() const;
 
   virtual Handle<Code> pre_monomorphic_stub() const {
     return pre_monomorphic_stub(isolate(), language_mode());
   }
 
   static Handle<Code> pre_monomorphic_stub(Isolate* isolate,
@@ skipping 43 matching lines @@
 
   static KeyedAccessStoreMode GetKeyedAccessStoreMode(
       ExtraICState extra_state) {
     return ExtraICStateKeyedAccessStoreMode::decode(extra_state);
   }
 
   static IcCheckType GetKeyType(ExtraICState extra_state) {
     return IcCheckTypeField::decode(extra_state);
   }
 
-  KeyedStoreIC(FrameDepth depth, Isolate* isolate) : StoreIC(depth, isolate) {
+  KeyedStoreIC(FrameDepth depth, Isolate* isolate,
+               KeyedStoreICNexus* nexus = NULL)
+      : StoreIC(depth, isolate, nexus) {
     DCHECK(target()->is_keyed_store_stub());
   }
 
   MUST_USE_RESULT MaybeHandle<Object> Store(Handle<Object> object,
                                             Handle<Object> name,
                                             Handle<Object> value);
 
   // Code generators for stub routines.  Only called once at startup.
   static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); }
   static void GeneratePreMonomorphic(MacroAssembler* masm) {
     GenerateMiss(masm);
   }
   static void GenerateMiss(MacroAssembler* masm);
   static void GenerateSlow(MacroAssembler* masm);
   static void GenerateMegamorphic(MacroAssembler* masm,
                                   LanguageMode language_mode);
 
   static Handle<Code> initialize_stub(Isolate* isolate,
                                       LanguageMode language_mode,
                                       State initialization_state);
 
   static Handle<Code> initialize_stub_in_optimized_code(
       Isolate* isolate, LanguageMode language_mode, State initialization_state);
 
+  static void Clear(Isolate* isolate, Code* host, KeyedStoreICNexus* nexus);
+
  protected:
   virtual Handle<Code> pre_monomorphic_stub() const {
     return pre_monomorphic_stub(isolate(), language_mode());
   }
   static Handle<Code> pre_monomorphic_stub(Isolate* isolate,
                                            LanguageMode language_mode) {
     if (is_strict(language_mode)) {
       return isolate->builtins()->KeyedStoreIC_PreMonomorphic_Strict();
     } else {
       return isolate->builtins()->KeyedStoreIC_PreMonomorphic();
@@ skipping 109 matching lines @@
 
 // Support functions for interceptor handlers.
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptorOnly);
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(LoadElementWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(StorePropertyWithInterceptor);
 }
 }  // namespace v8::internal
 
 #endif  // V8_IC_H_