[IC] Only cache handlers on a map that were compiled for that map

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 122 matching lines @@
                                          Address constant_pool);
   static inline void SetTargetAtAddress(Address address, Code* target,
                                         Address constant_pool);
   // As a vector-based IC, type feedback must be updated differently.
   static void OnTypeFeedbackChanged(Isolate* isolate, Code* host);
   static void PostPatching(Address address, Code* target, Code* old_target);
 
   // Compute the handler either by compiling or by retrieving a cached version.
   Handle<Code> ComputeHandler(LookupIterator* lookup,
                               Handle<Object> value = Handle<Code>::null());
+  virtual Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) {
+    UNREACHABLE();
+    return Handle<Code>::null();
+  }
   virtual Handle<Code> CompileHandler(LookupIterator* lookup,
                                       Handle<Object> value,
                                       CacheHolderFlag cache_holder) {
     UNREACHABLE();
     return Handle<Code>::null();
   }
 
   void UpdateMonomorphicIC(Handle<Code> handler, Handle<Name> name);
   bool UpdatePolymorphicIC(Handle<Name> name, Handle<Code> code);
   void UpdateMegamorphicCache(Map* map, Name* name, Code* code);
@@ skipping 144 matching lines @@
 
  protected:
   Handle<Code> slow_stub() const {
     return isolate()->builtins()->LoadIC_Slow();
   }
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupIterator* lookup);
 
+  Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override;
+
   Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> unused,
                               CacheHolderFlag cache_holder) override;
 
  private:
   Handle<Code> SimpleFieldLoad(FieldIndex index);
 
   friend class IC;
 };
 
 
@@ skipping 62 matching lines @@
   static void Clear(Isolate* isolate, Code* host, StoreICNexus* nexus);
 
  protected:
   // Stub accessors.
   Handle<Code> slow_stub() const;
 
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupIterator* lookup, Handle<Object> value,
                     JSReceiver::StoreFromKeyed store_mode);
+  Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override;
   Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> value,
                               CacheHolderFlag cache_holder) override;
 
  private:
   friend class IC;
 };
 
 
 enum KeyedStoreCheckMap { kDontCheckMap, kCheckMap };
 
@@ skipping 92 matching lines @@
 
 // Helper for BinaryOpIC and CompareIC.
 enum InlinedSmiCheck { ENABLE_INLINED_SMI_CHECK, DISABLE_INLINED_SMI_CHECK };
 void PatchInlinedSmiCode(Isolate* isolate, Address address,
                          InlinedSmiCheck check);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_H_