[Bug target/110273] i686-w64-mingw32 with -march=znver4 generates AVX instructions without stack alignment

[amonakov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110273

--- Comment #4 from Alexander Monakov  ---
Further reduced:

void f()
{
int c[4] = { 0, 0, 0, 0 };
int cc[8] = { 0 };
asm("" :: "m"(c), "m"(cc));
}

Also reproducible with -march=skylake-avx512 or even plain -mavx512f,
retitling.

[Bug target/110273] i686-w64-mingw32 with -march=znver4 generates AVX instructions without stack alignment

[amonakov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110273

--- Comment #3 from Alexander Monakov  ---
Seems to work fine with explicit '-mincoming-stack-boundary=2' on the command
line, even though it should make no difference for the 32-bit MinGW target.

[Bug target/110273] i686-w64-mingw32 with -march=znver4 generates AVX instructions without stack alignment

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110273

--- Comment #2 from Andrew Pinski  ---
The difference is the inlining of memcpy if I used -minline-all-stringops, the
realignment comes back.

[Bug target/110273] i686-w64-mingw32 with -march=znver4 generates AVX instructions without stack alignment

[zfigura at codeweavers dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110273

--- Comment #1 from Zebediah Figura  ---
Created attachment 55335
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55335=edit
gcc -v output, from godbolt