[turbofan] Add checked load/store operators.

src/ia32/assembler-ia32.cc

 // 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 439 matching lines @@
 
 
 void Assembler::mov_b(Register dst, const Operand& src) {
   CHECK(dst.is_byte_register());
   EnsureSpace ensure_space(this);
   EMIT(0x8A);
   emit_operand(dst, src);
 }
 
 
-void Assembler::mov_b(const Operand& dst, int8_t imm8) {
+void Assembler::mov_b(const Operand& dst, const Immediate& src) {
   EnsureSpace ensure_space(this);
   EMIT(0xC6);
   emit_operand(eax, dst);
-  EMIT(imm8);
+  EMIT(static_cast<int8_t>(src.x_));
 }
 
 
 void Assembler::mov_b(const Operand& dst, Register src) {
   CHECK(src.is_byte_register());
   EnsureSpace ensure_space(this);
   EMIT(0x88);
   emit_operand(src, dst);
 }
 
 
 void Assembler::mov_w(Register dst, const Operand& src) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x8B);
   emit_operand(dst, src);
 }
 
 
 void Assembler::mov_w(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x89);
   emit_operand(src, dst);
 }
 
 
-void Assembler::mov_w(const Operand& dst, int16_t imm16) {
+void Assembler::mov_w(const Operand& dst, const Immediate& src) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0xC7);
   emit_operand(eax, dst);
-  EMIT(static_cast<int8_t>(imm16 & 0xff));
-  EMIT(static_cast<int8_t>(imm16 >> 8));
+  EMIT(static_cast<int8_t>(src.x_ & 0xff));
+  EMIT(static_cast<int8_t>(src.x_ >> 8));
 }
 
 
 void Assembler::mov(Register dst, int32_t imm32) {
   EnsureSpace ensure_space(this);
   EMIT(0xB8 | dst.code());
   emit(imm32);
 }
 
 
@@ skipping 2142 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32