MIPS: Never hchange nan-hole to hole or hole to nan-hole. Only allow changing hole to nan if all us…

src/mips/lithium-codegen-mips.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 259 matching lines @@
                          CallKind call_kind,
                          A1State a1_state);
 
   void LoadHeapObject(Register result, Handle<HeapObject> object);
 
   void RecordSafepointWithLazyDeopt(LInstruction* instr,
                                     SafepointMode safepoint_mode);
 
   void RegisterEnvironmentForDeoptimization(LEnvironment* environment,
                                             Safepoint::DeoptMode mode);
-  void DeoptimizeIf(Condition cc,
+  void DeoptimizeIf(Condition condition,
                     LEnvironment* environment,
                     Deoptimizer::BailoutType bailout_type,
                     Register src1 = zero_reg,
                     const Operand& src2 = Operand(zero_reg));
-  void DeoptimizeIf(Condition cc,
+  void DeoptimizeIf(Condition condition,
                     LEnvironment* environment,
                     Register src1 = zero_reg,
                     const Operand& src2 = Operand(zero_reg));
-  void ApplyCheckIf(Condition cc,
+  void ApplyCheckIf(Condition condition,
                     LBoundsCheck* check,
                     Register src1 = zero_reg,
                     const Operand& src2 = Operand(zero_reg));
 
   void AddToTranslation(LEnvironment* environment,
                         Translation* translation,
                         LOperand* op,
                         bool is_tagged,
                         bool is_uint32,
                         int* object_index_pointer,
@@ skipping 22 matching lines @@
   void RecordSafepointWithRegistersAndDoubles(LPointerMap* pointers,
                                               int arguments,
                                               Safepoint::DeoptMode mode);
   void RecordPosition(int position);
   void RecordAndUpdatePosition(int position);
 
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);
   template<class InstrType>
   void EmitBranch(InstrType instr,
-                  Condition cc,
+                  Condition condition,
                   Register src1,
                   const Operand& src2);
   template<class InstrType>
   void EmitBranchF(InstrType instr,
-                   Condition cc,
+                   Condition condition,
                    FPURegister src1,
                    FPURegister src2);
+  template<class InstrType>
+  void EmitFalseBranchF(InstrType instr,
+                        Condition condition,
+                        FPURegister src1,
+                        FPURegister src2);
   void EmitCmpI(LOperand* left, LOperand* right);
   void EmitNumberUntagD(Register input,
                         DoubleRegister result,
                         bool allow_undefined_as_nan,
                         bool deoptimize_on_minus_zero,
                         LEnvironment* env,
                         NumberUntagDMode mode);
 
   // Emits optimized code for typeof x == "y".  Modifies input register.
   // Returns the condition on which a final split to
@@ skipping 160 matching lines @@
   LCodeGen* codegen_;
   Label entry_;
   Label exit_;
   Label* external_exit_;
   int instruction_index_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_LITHIUM_CODEGEN_MIPS_H_