Split HCompareGeneric in a test and a branch part.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 7e5272e218e6a32eebaa847a21d6369319b74bc9..2bd71520f24b5f86a8b66872a0eb1e742fb4f5d0 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -67,6 +67,7 @@ class LChunkBuilder;
   V(AccessArgumentsAt)                         \
   V(Add)                                       \
   V(Allocate)                                  \
+  V(AndBranch)                                 \
   V(ApplyArguments)                            \
   V(ArgumentsElements)                         \
   V(ArgumentsLength)                           \
@@ -1197,6 +1198,34 @@ class HTemplateControlInstruction : public HControlInstruction {
 };
 
 
+class HConstant;
+
+
+class HAndBranch V8_FINAL : public HTemplateControlInstruction<2, 1> {
+ public:
+  DECLARE_INSTRUCTION_FACTORY_P2(HAndBranch,
+                                 HValue*,
+                                 Token::Value);
+
+  virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
+    return Representation::Smi();
+  }
+
+  HValue* value()        { return OperandAt(0); }
+  Token::Value op()      { return op_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(AndBranch);
+
+ private:
+  HAndBranch(HValue* value, Token::Value op) : op_(op) {
+    ASSERT(value->representation().IsSmi());
+    SetOperandAt(0, value);
+  }
+
+  Token::Value op_;
+};
+
+
 class HBlockEntry V8_FINAL : public HTemplateInstruction<0> {
  public:
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
@@ -3943,14 +3972,12 @@ class HCompareGeneric V8_FINAL : public HBinaryOperation {
       : HBinaryOperation(context, left, right, HType::Boolean()),
         token_(token) {
     ASSERT(Token::IsCompareOp(token));
-    set_representation(Representation::Tagged());
+    set_representation(Representation::Smi());
     SetAllSideEffects();
   }
 
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
-    return index == 0
-        ? Representation::Tagged()
-        : representation();
+    return Representation::Tagged();
   }
 
   Token::Value token() const { return token_; }