[Bug ipa/115533] [12/13/14/15 regression] flac miscompiled with -O3 -march=znver2 -fipa-pta -fno-vect-cost-model

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115533

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
* Adding optimize("O2") or O0 to ReallocateWindowBuffer fixes it (it's a
realloc wrapper)
* We go wrong in analyzeResult and return a bogus result