Thread the Lithium instruction down to DeoptimizeIf and friends.

src/x64/lithium-codegen-x64.h

Index: src/x64/lithium-codegen-x64.h
diff --git a/src/x64/lithium-codegen-x64.h b/src/x64/lithium-codegen-x64.h
index e6896d6685e8b9d53fddd3eb750e4aa4e6592adf..e1876b8c662229f57ec2fa308cfdaa765a06c040 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -206,10 +206,9 @@ class LCodeGen: public LCodeGenBase {
                                     int argc);
   void RegisterEnvironmentForDeoptimization(LEnvironment* environment,
                                             Safepoint::DeoptMode mode);
-  void DeoptimizeIf(Condition cc,
-                    LEnvironment* environment,
+  void DeoptimizeIf(Condition cc, LInstruction* instr,
                     Deoptimizer::BailoutType bailout_type);
-  void DeoptimizeIf(Condition cc, LEnvironment* environment);
+  void DeoptimizeIf(Condition cc, LInstruction* instr);
 
   bool DeoptEveryNTimes() {
     return FLAG_deopt_every_n_times != 0 && !info()->IsStub();
@@ -263,13 +262,8 @@ class LCodeGen: public LCodeGenBase {
   void EmitBranch(InstrType instr, Condition cc);
   template<class InstrType>
   void EmitFalseBranch(InstrType instr, Condition cc);
-  void EmitNumberUntagD(
-      Register input,
-      XMMRegister result,
-      bool allow_undefined_as_nan,
-      bool deoptimize_on_minus_zero,
-      LEnvironment* env,
-      NumberUntagDMode mode = NUMBER_CANDIDATE_IS_ANY_TAGGED);
+  void EmitNumberUntagD(LNumberUntagD* instr, Register input,
+                        XMMRegister result, NumberUntagDMode mode);
 
   // Emits optimized code for typeof x == "y".  Modifies input register.
   // Returns the condition on which a final split to