[Atomics] use TFJ builtins for atomic add, sub, and, or, and xor

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 690 matching lines @@
 }
 
 
 void Assembler::xchg(Register dst, const Operand& src) {
   EnsureSpace ensure_space(this);
   EMIT(0x87);
   emit_operand(dst, src);
 }
 
 void Assembler::xchg_b(Register reg, const Operand& op) {
+  DCHECK(reg.is_byte_register());
   EnsureSpace ensure_space(this);
   EMIT(0x86);
   emit_operand(reg, op);
 }
 
 void Assembler::xchg_w(Register reg, const Operand& op) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x87);
   emit_operand(reg, op);
 }
 
 void Assembler::lock() {
   EnsureSpace ensure_space(this);
   EMIT(0xF0);
 }
 
 void Assembler::cmpxchg(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   EMIT(0x0F);
   EMIT(0xB1);
   emit_operand(src, dst);
 }
 
 void Assembler::cmpxchg_b(const Operand& dst, Register src) {
+  DCHECK(src.is_byte_register());
   EnsureSpace ensure_space(this);
   EMIT(0x0F);
   EMIT(0xB0);
   emit_operand(src, dst);
 }
 
 void Assembler::cmpxchg_w(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
   EMIT(0x0F);
@@ skipping 2372 matching lines @@
   }
   RelocInfo rinfo(pc_, rmode, data, NULL);
   reloc_info_writer.Write(&rinfo);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32