Allow control intructions to have side effects.

src/x64/lithium-x64.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 58 matching lines @@
   V(CheckSmi)                                   \
   V(CheckValue)                                 \
   V(ClampDToUint8)                              \
   V(ClampIToUint8)                              \
   V(ClampTToUint8)                              \
   V(ClassOfTestAndBranch)                       \
   V(CompareNumericAndBranch)                    \
   V(CmpObjectEqAndBranch)                       \
   V(CmpHoleAndBranch)                           \
   V(CmpMapAndBranch)                            \
-  V(CmpT)                                       \
+  V(CompareGenericAndBranch)                    \
   V(ConstantD)                                  \
   V(ConstantE)                                  \
   V(ConstantI)                                  \
   V(ConstantS)                                  \
   V(ConstantT)                                  \
   V(Context)                                    \
   V(DateField)                                  \
   V(DebugBreak)                                 \
   V(DeclareGlobals)                             \
   V(Deoptimize)                                 \
@@ skipping 922 matching lines @@
   LOperand* temp2() { return temps_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ClassOfTestAndBranch,
                                "class-of-test-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(ClassOfTestAndBranch)
 
   virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
 };
 
 
-class LCmpT V8_FINAL : public LTemplateInstruction<1, 2, 0> {
+class LCompareGenericAndBranch V8_FINAL : public LControlInstruction<2, 0> {
  public:
-  LCmpT(LOperand* left, LOperand* right) {
+  LCompareGenericAndBranch(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
-  DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
+  DECLARE_CONCRETE_INSTRUCTION(CompareGenericAndBranch,
+                               "compare-generic-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(CompareGenericAndBranch)
 
   Token::Value op() const { return hydrogen()->token(); }
 };
 
 
 class LInstanceOf V8_FINAL : public LTemplateInstruction<1, 2, 0> {
  public:
   LInstanceOf(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
@@ skipping 1673 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_