Re: Zen5 tuning part 1: avoid FMA chains

[Jan Hubicka]

Hi,
> 
> gcc/ChangeLog:
> 
>       * config/i386/x86-tune.def (X86_TUNE_AVOID_128FMA_CHAINS): Enable for
>       znver5.
>       (X86_TUNE_AVOID_256FMA_CHAINS): Likewise.
>       (X86_TUNE_AVOID_512FMA_CHAINS): Likewise.
This patch is also now backported to active branches.

Honza