[turbofan] Add checked load/store operators.

src/ia32/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 601 matching lines @@
   void pop(Register dst);
   void pop(const Operand& dst);
 
   void enter(const Immediate& size);
   void leave();
 
   // Moves
   void mov_b(Register dst, Register src) { mov_b(dst, Operand(src)); }
   void mov_b(Register dst, const Operand& src);
   void mov_b(Register dst, int8_t imm8) { mov_b(Operand(dst), imm8); }
-  void mov_b(const Operand& dst, int8_t imm8);
+  void mov_b(const Operand& dst, int8_t src) { mov_b(dst, Immediate(src)); }
+  void mov_b(const Operand& dst, const Immediate& src);
   void mov_b(const Operand& dst, Register src);
 
   void mov_w(Register dst, const Operand& src);
+  void mov_w(const Operand& dst, int16_t src) { mov_w(dst, Immediate(src)); }
+  void mov_w(const Operand& dst, const Immediate& src);
   void mov_w(const Operand& dst, Register src);
-  void mov_w(const Operand& dst, int16_t imm16);
 
   void mov(Register dst, int32_t imm32);
   void mov(Register dst, const Immediate& x);
   void mov(Register dst, Handle<Object> handle);
   void mov(Register dst, const Operand& src);
   void mov(Register dst, Register src);
   void mov(const Operand& dst, const Immediate& x);
   void mov(const Operand& dst, Handle<Object> handle);
   void mov(const Operand& dst, Register src);
 
@@ skipping 561 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_