Stuart Henderson <s...@spacehopper.org> writes: > On 2024/04/22 10:30, Greg Steuck wrote: >> > If it would help, I could update my old AMD machine to -current >> > and check ghc works with the two patches removed, once I've finished >> > trying out the patch I just sent for 7.5. >> >> Thanks James for working through this. Yes, we need the new development >> to happen on -current ports with -current base system. We'd also want a >> more complicated patch than the one you just sent because base supports >> avx-512 now. > > We probably don't need any patches for this in -current now that avx-512 > opcodes are supported by the OS.
James, if you'd like to play with this on -current, please remove both patch-libraries_text_simdutf_simdutf_h and patch-libraries_text_cbits_measure_off_c This should make the offending check disappear and the pre-existing checks should correctly report the OS doesn't support these instructions on your machine. We can then confirm that avx-512 is working for people who previously had problems. Thanks Greg
