Re: [PATCH 11/13] x86_64: Remove pointless set_64bit() usage

Jason A. Donenfeld
2022-11-05T20:55:13Z

On Sat, Nov 05, 2022 at 04:14:19PM +0100, Peter Zijlstra wrote:
> Also:
>
> $ ./align
> 16, 16
>
> ---
>
> #include <stdio.h>
>
> int main(int argx, char **argv)
> {
> __int128 a;
>
> printf("%d, %d\n", sizeof(a), __alignof(a));
> return 0;
> }

zx2c4@thinkpad /tmp $ x86_64-linux-musl-gcc -O2 a.c -static && qemu-x86_64 ./a.out
16, 16
zx2c4@thinkpad /tmp $ aarch64-linux-musl-gcc -O2 a.c -static && qemu-aarch64 ./a.out
16, 16
zx2c4@thinkpad /tmp $ powerpc64le-linux-musl-gcc -O2 a.c -static && qemu-ppc64le ./a.out
16, 16
zx2c4@thinkpad /tmp $ s390x-linux-musl-gcc -O2 a.c -static && qemu-s390x ./a.out
16, 8
zx2c4@thinkpad /tmp $ riscv64-linux-musl-gcc -O2 a.c -static && qemu-riscv64 ./a.out
16, 16

Er, yea, you're right. Looks like of these, it's just s390x, so
whatever.

Jason