[Bug target/79177] use the register keyword with ymm0 register

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79177

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The inline asm input constraints don't make sense, if you have __m256 var, you
should use "x" constraint (i.e. SSE regs) for it rather than "r" (general
regs).
That said, the testcase compiles just fine with -mavx or -mavx2, the error is
only if you compile without -mavx, but then it is appropriate, without AVX
enabled __m256 is just a generic vector, that certainly can't be put into a SSE
register.