Split HCompareGeneric in a test and a branch part.

src/hydrogen.h

 // Copyright 2012 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 1191 matching lines @@
 
   template<class I, class P1, class P2, class P3, class P4,
            class P5, class P6, class P7, class P8>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7, P8 p8) {
     return I::cast(
         AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7, p8)));
   }
 
   void AddSimulate(BailoutId id, RemovableSimulate removable = FIXED_SIMULATE);
 
+  HAndBranch* AndBranch(HInstruction* pluggable,

[titzer, 2013/10/10 14:05:25]

Need a better name than "pluggable"

+                        Token::Value condition,
+                        BailoutId bailout_id) {
+    ASSERT(pluggable->IsLinked());
+    if (pluggable->HasObservableSideEffects()) {
+      Push(pluggable);
+      AddSimulate(bailout_id, REMOVABLE_SIMULATE);
+      return New<HAndBranch>(Pop(), condition);
+    }
+    return New<HAndBranch>(pluggable, condition);
+  }
+
+
  protected:
   virtual bool BuildGraph() = 0;
 
   HBasicBlock* CreateBasicBlock(HEnvironment* env);
   HBasicBlock* CreateLoopHeaderBlock();
 
   HValue* BuildCheckHeapObject(HValue* object);
   HValue* BuildCheckMap(HValue* obj, Handle<Map> map);
   HValue* BuildWrapReceiver(HValue* object, HValue* function);
 
@@ skipping 1231 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_