On 04/24/2012 02:54 PM, Peter Zijlstra wrote: > - andl $4294967295, %edx > shrq $32, %rcx > - andl $4294967295, %esi > + mov %esi, %esi If you can *ever* get gcc to generate those andl instructions on x86, then please file a gcc bug report: the constant is 0xffffffff and those are plain zero-extension instructions which is much better done with mov. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html