https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103750
--- Comment #8 from Thiago Macieira <thiago at kde dot org> ---
Update again: looks like the issue was the next line I didn't paste, which was
performing _kortestz_mask32_u8 on an __mmask16. The type mismatch was causing
this problem.
If I Use the correct _kortestz_maskXX_u8, I'm getting:
vmovdqu8 (%rsi), %ymm2
vmovdqu8 32(%rsi), %ymm3
vpcmpub $6, %ymm0, %ymm2, %k0
vpcmpub $6, %ymm0, %ymm3, %k1
kortestd %k1, %k0
je .L794
vmovdqu16 (%rsi), %ymm2
vmovdqu16 32(%rsi), %ymm3
vpcmpuw $6, %ymm0, %ymm2, %k0
vpcmpuw $6, %ymm0, %ymm3, %k1
kortestw %k1, %k0
je .L807
So it looks like GCC is not completely wrong, but it could be more lenient
(Clang is). You can lower the severity of this issue.
