[Issue 17484] high penalty for vbroadcastsd with -mcpu=avx

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17484

--- Comment #3 from github-bugzilla at puremagic.com ---
Commit pushed to stable at https://github.com/dlang/dmd

https://github.com/dlang/dmd/commit/1f11aa0eb8f6087b7dbadeb770e4526ec9808ccc
fix Issue 17484 - high penalty for AVX-256 instructions with AVX-128 regs

--