Optimize instanceof further...

src/hydrogen-instructions.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 55 matching lines @@
 //         HBitAnd
 //         HBitOr
 //         HBitXor
 //         HSar
 //         HShl
 //         HShr
 //       HBoundsCheck
 //       HCompare
 //       HCompareJSObjectEq
 //       HInstanceOf
+//       HInstanceOfKnownGlobal
 //       HLoadKeyed
 //         HLoadKeyedFastElement
 //         HLoadKeyedGeneric
 //       HLoadNamedGeneric
 //       HPower
 //       HStoreNamed
 //         HStoreNamedField
 //         HStoreNamedGeneric
 //     HBlockEntry
 //     HCall
@@ skipping 115 matching lines @@
   V(Constant)                                  \
   V(DeleteProperty)                            \
   V(Deoptimize)                                \
   V(Div)                                       \
   V(EnterInlined)                              \
   V(FunctionLiteral)                           \
   V(GlobalObject)                              \
   V(GlobalReceiver)                            \
   V(Goto)                                      \
   V(InstanceOf)                                \
+  V(InstanceOfKnownGlobal)                     \
   V(IsNull)                                    \
   V(IsObject)                                  \
   V(IsSmi)                                     \
   V(HasInstanceType)                           \
   V(HasCachedArrayIndex)                       \
   V(ClassOfTest)                               \
   V(LeaveInlined)                              \
   V(LoadElements)                              \
   V(LoadGlobal)                                \
   V(LoadKeyedFastElement)                      \
@@ skipping 2008 matching lines @@
   virtual bool EmitAtUses() const { return uses()->length() <= 1; }
 
   virtual Representation RequiredInputRepresentation(int index) const {
     return Representation::Tagged();
   }
 
   DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance_of")
 };
 
 
+class HInstanceOfKnownGlobal: public HUnaryOperation {
+ public:
+  HInstanceOfKnownGlobal(HValue* left, Handle<JSFunction> right)
+      : HUnaryOperation(left), function_(right) {
+    set_representation(Representation::Tagged());
+    SetFlagMask(AllSideEffects());
+  }
+
+  Handle<JSFunction> function() { return function_; }
+
+  virtual Representation RequiredInputRepresentation(int index) const {
+    return Representation::Tagged();
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal,
+                               "instance_of_known_global")
+
+ private:
+  Handle<JSFunction> function_;
+};
+
+
 class HPower: public HBinaryOperation {
  public:
   HPower(HValue* left, HValue* right)
       : HBinaryOperation(left, right) {
     set_representation(Representation::Double());
     SetFlag(kUseGVN);
   }
 
   virtual Representation RequiredInputRepresentation(int index) const {
     return (index == 1) ? Representation::None() : Representation::Double();
@@ skipping 695 matching lines @@
   HValue* object() const { return left(); }
   HValue* key() const { return right(); }
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_