[Bug target/109137] [12 regression] Compiling ffmpeg with -m32 on x86_64-pc-linux-gnu hangs on libavcodec/h264_cabac.c since r12-9086-g489c81db7d4f75

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109137

--- Comment #23 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 30 Mar 2023, hubicka at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109137
> 
> --- Comment #21 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
> Zen 1-3 changes were intentional in the original tuning patch (it is also
> briefly mentioned in the commit message).  By allowing 256 bit AVX moves
> instead of 64bit integer moves (or 128bit) we can move bigger blocks of memory
> without loops and it was faster in micro-benchmarks I made on all zens, even on
> znver1.
> We also automatically go for 128bit moves when ISA allows that.

Sure, but this change is IMHO surprising for people on the branch so
I'd rather not do this.