https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110227
--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Andrew Pinski from comment #2)
> Semi-Reduced testcase:
> ```
> #include <immintrin.h>
>
> void f()
> {
> __m256i mask = _mm256_set_epi32(0, 0, 0, 0, -1, -1, -1, -1);
> register __m256i reg asm("xmm16") = mask;
> asm(""::"v"(reg));
> }
> ```
>
> Most likely introduced by r13-2804-ga282f086ef26d9 .
(define_insn "mov<mode>_internal"
[(set (match_operand:VMOVE 0 "nonimmediate_operand"
- "=v,v ,v ,m")
+ "=v,v ,v,v ,m")
(match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand"
- " C,<sseconstm1>,vm,v"))]
+ " C,<sseconstm1>,BH,vm,v"))]
We need to use "x" instead of "v".
