[Bug tree-optimization/121256] [13/14/15 Regression] ffmpeg miscompiled with -O2 -march=znver2 since r13-3327-g46a8e017d048ec

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121256

--- Comment #9 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #8)
> Should be fixed on trunk, can you please verify on the original sources?

Of course - and it works now, thanks as ever!

I suspect there might be some other issues which fall out with flag
permutations (as they've been building w/ -fno-tree-vectorize as a workaround
for some ancient long-forgotten bug, this was me playing with dropping it).
Will keep an eye out.