Never hchange nan-hole to hole or hole to nan-hole.

src/arm/lithium-codegen-arm.h

Index: src/arm/lithium-codegen-arm.h
diff --git a/src/arm/lithium-codegen-arm.h b/src/arm/lithium-codegen-arm.h
index 59d4ba4ac78c76bfc16ea3c5c9f2bbd10348724c..5d5135dc1b900d66753264987ad1b2dca742c8ca 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/arm/lithium-codegen-arm.h
@@ -280,11 +280,11 @@ class LCodeGen BASE_EMBEDDED {
 
   void RegisterEnvironmentForDeoptimization(LEnvironment* environment,
                                             Safepoint::DeoptMode mode);
-  void DeoptimizeIf(Condition cc,
+  void DeoptimizeIf(Condition condition,
                     LEnvironment* environment,
                     Deoptimizer::BailoutType bailout_type);
-  void DeoptimizeIf(Condition cc, LEnvironment* environment);
-  void ApplyCheckIf(Condition cc, LBoundsCheck* check);
+  void DeoptimizeIf(Condition condition, LEnvironment* environment);
+  void ApplyCheckIf(Condition condition, LBoundsCheck* check);
 
   void AddToTranslation(LEnvironment* environment,
                         Translation* translation,
@@ -322,7 +322,9 @@ class LCodeGen BASE_EMBEDDED {
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);
   template<class InstrType>
-  void EmitBranch(InstrType instr, Condition cc);
+  void EmitBranch(InstrType instr, Condition condition);
+  template<class InstrType>
+  void EmitFalseBranch(InstrType instr, Condition condition);
   void EmitNumberUntagD(Register input,
                         DwVfpRegister result,
                         bool allow_undefined_as_nan,