[Bug target/97127] FMA3 code transformation leads to slowdown on Skylake

[already5chosen at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97127

--- Comment #8 from Michael_S <already5chosen at yahoo dot com> ---
What are values of gcc "loop" cost of the relevant instructions now?
1. AVX256 Load
2. FMA3 ymm,ymm,ymm
3. AVX256 Regmove
4. FMA3 mem,ymm,ymm