2236   void arithmetic_op(byte opcode, Register reg, Register rm_reg, int size);
2237   void arithmetic_op(byte opcode,
2283     arithmetic_op(0x03, dst, src, size);  in emit_add()
2291     arithmetic_op(0x03, dst, src, size);  in emit_add()
2295     arithmetic_op(0x1, src, dst, size);  in emit_add()
2303     arithmetic_op(0x23, dst, src, size);  in emit_and()
2307     arithmetic_op(0x23, dst, src, size);  in emit_and()
2311     arithmetic_op(0x21, src, dst, size);  in emit_and()
2323     arithmetic_op(0x3B, dst, src, size);  in emit_cmp()
2327     arithmetic_op(0x3B, dst, src, size);  in emit_cmp()
2331     arithmetic_op(0x39, src, dst, size);  in emit_cmp()
2388     arithmetic_op(0x0B, dst, src, size);  in emit_or()
2392     arithmetic_op(0x0B, dst, src, size);  in emit_or()
2396     arithmetic_op(0x9, src, dst, size);  in emit_or()
2410     arithmetic_op(0x1b, dst, src, size);  in emit_sbb()
2414     arithmetic_op(0x2B, dst, src, size);  in emit_sub()
2422     arithmetic_op(0x2B, dst, src, size);  in emit_sub()
2426     arithmetic_op(0x29, src, dst, size);  in emit_sub()
2448       arithmetic_op(0x33, dst, src, kInt32Size);  in emit_xor()
2450       arithmetic_op(0x33, dst, src, size);  in emit_xor()
2455     arithmetic_op(0x33, dst, src, size);  in emit_xor()
2467     arithmetic_op(0x31, src, dst, size);  in emit_xor()