Hydrogen code stubs for vector-based ICs.

src/ic/handler-compiler.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_IC_HANDLER_COMPILER_H_
 #define V8_IC_HANDLER_COMPILER_H_
 
 #include "src/ic/access-compiler.h"
 #include "src/ic/ic-state.h"
 
@@ skipping 20 matching lines @@
   virtual ~PropertyHandlerCompiler() {}
 
   virtual Register FrontendHeader(Register object_reg, Handle<Name> name,
                                   Label* miss) {
     UNREACHABLE();
     return receiver();
   }
 
   virtual void FrontendFooter(Handle<Name> name, Label* miss) { UNREACHABLE(); }
 
-  Register Frontend(Register object_reg, Handle<Name> name);
+  // Frontend loads from receiver(), returns holder register which may be
+  // different.
+  Register Frontend(Handle<Name> name);
   void NonexistentFrontendHeader(Handle<Name> name, Label* miss,
                                  Register scratch1, Register scratch2);
 
+  // When FLAG_vector_ics is true, handlers that have the possibility of missing
+  // will need to save and pass these to miss handlers.
+  void PushVectorAndSlot() { PushVectorAndSlot(vector(), slot()); }
+  void PushVectorAndSlot(Register vector, Register slot);
+  void PopVectorAndSlot() { PopVectorAndSlot(vector(), slot()); }
+  void PopVectorAndSlot(Register vector, Register slot);
+
+  void DiscardVectorAndSlot();
+
   // TODO(verwaest): Make non-static.
   static void GenerateFastApiCall(MacroAssembler* masm,
                                   const CallOptimization& optimization,
                                   Handle<Map> receiver_map, Register receiver,
                                   Register scratch, bool is_store, int argc,
                                   Register* values);
 
   // Helper function used to check that the dictionary doesn't contain
   // the property. This function may return false negatives, so miss_label
   // must always call a backup property check that is complete.
@@ skipping 108 matching lines @@
 
   virtual void FrontendFooter(Handle<Name> name, Label* miss);
 
  private:
   Handle<Code> CompileLoadNonexistent(Handle<Name> name);
   void GenerateLoadConstant(Handle<Object> value);
   void GenerateLoadCallback(Register reg,
                             Handle<ExecutableAccessorInfo> callback);
   void GenerateLoadCallback(const CallOptimization& call_optimization,
                             Handle<Map> receiver_map);
+
+  // Helper emits no code if vector-ics are disabled.
+  void InterceptorVectorSlotPush(Register holder_reg);
+  enum PopMode { POP, DISCARD };
+  void InterceptorVectorSlotPop(Register holder_reg, PopMode mode = POP);
+
   void GenerateLoadInterceptor(Register holder_reg);
   void GenerateLoadInterceptorWithFollowup(LookupIterator* it,
                                            Register holder_reg);
   void GenerateLoadPostInterceptor(LookupIterator* it, Register reg);
 
   // Generates prototype loading code that uses the objects from the
   // context we were in when this function was called. If the context
   // has changed, a jump to miss is performed. This ties the generated
   // code to a particular context and so must not be used in cases
   // where the generated code is not allowed to have references to
@@ skipping 85 matching lines @@
 
   void CompileElementHandlers(MapHandleList* receiver_maps,
                               CodeHandleList* handlers);
 
   static void GenerateStoreSlow(MacroAssembler* masm);
 };
 }
 }  // namespace v8::internal
 
 #endif  // V8_IC_HANDLER_COMPILER_H_