Optionally use 31-bits SMI value for 64-bit system

src/x64/lithium-codegen-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 25 matching lines @@
 #include "scopes.h"
 #include "v8utils.h"
 #include "x64/lithium-gap-resolver-x64.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class LDeferredCode;
 class SafepointGenerator;
+class LithiumSmiInstructionWrapper;
 
 class LCodeGen BASE_EMBEDDED {
  public:
   LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info)
       : zone_(info->zone()),
         chunk_(static_cast<LPlatformChunk*>(chunk)),
         masm_(assembler),
         info_(info),
         current_block_(-1),
         current_instruction_(-1),
@@ skipping 59 matching lines @@
   // chunk contains constructs we cannot handle. Returns true if the
   // code generation attempt succeeded.
   bool GenerateCode();
 
   // Finish the code by setting stack height, safepoint, and bailout
   // information on it.
   void FinishCode(Handle<Code> code);
 
   // Deferred code support.
   void DoDeferredNumberTagD(LNumberTagD* instr);
+  void DoDeferredNumberTagI(LNumberTagI* instr);
   void DoDeferredNumberTagU(LNumberTagU* instr);
   void DoDeferredTaggedToI(LTaggedToI* instr);
   void DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr);
   void DoDeferredStackCheck(LStackCheck* instr);
   void DoDeferredRandom(LRandom* instr);
   void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr);
   void DoDeferredStringCharFromCode(LStringCharFromCode* instr);
   void DoDeferredAllocate(LAllocate* instr);
   void DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
                                        Label* map_check);
@@ skipping 126 matching lines @@
   Register ToRegister(int index) const;
   XMMRegister ToDoubleRegister(int index) const;
   Operand BuildFastArrayOperand(
       LOperand* elements_pointer,
       LOperand* key,
       ElementsKind elements_kind,
       uint32_t offset,
       uint32_t additional_index = 0);
 
   void EmitIntegerMathAbs(LMathAbs* instr);
-  void EmitInteger64MathAbs(LMathAbs* instr);
+  void EmitSmiMathAbs(LMathAbs* instr);
 
   // Support for recording safepoint and position information.
   void RecordSafepoint(LPointerMap* pointers,
                        Safepoint::Kind kind,
                        int arguments,
                        Safepoint::DeoptMode mode);
   void RecordSafepoint(LPointerMap* pointers, Safepoint::DeoptMode mode);
   void RecordSafepoint(Safepoint::DeoptMode mode);
   void RecordSafepointWithRegisters(LPointerMap* pointers,
                                     int arguments,
@@ skipping 117 matching lines @@
       codegen_->expected_safepoint_kind_ = Safepoint::kSimple;
     }
 
    private:
     LCodeGen* codegen_;
   };
 
   friend class LDeferredCode;
   friend class LEnvironment;
   friend class SafepointGenerator;
+  friend class LithiumSmiInstructionWrapper;
   DISALLOW_COPY_AND_ASSIGN(LCodeGen);
 };
 
 
 class LDeferredCode: public ZoneObject {
  public:
   explicit LDeferredCode(LCodeGen* codegen)
       : codegen_(codegen),
         external_exit_(NULL),
         instruction_index_(codegen->current_instruction_) {
@@ skipping 17 matching lines @@
   LCodeGen* codegen_;
   Label entry_;
   Label exit_;
   Label* external_exit_;
   int instruction_index_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_LITHIUM_CODEGEN_X64_H_