On 07/12/2011 02:22 PM, harsha.jaga...@amd.com wrote: > We would like to propose changing AVX generic mode tuning to generate 128-bit > AVX instead of 256-bit AVX.
You indicate a 3% reduction on bulldozer with avx256. How does avx128 compare to -mno-avx -msse4.2? Will the next AMD generation have a useable avx256? I'm not keen on the idea of generic mode being tune for a single processor revision that maybe shouldn't actually be using avx at all. r~