https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104686
--- Comment #11 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Martin Liška from comment #8) > (In reply to Martin Liška from comment #7) > > (In reply to Richard Biener from comment #6) > > > Both revisions affect vectorizer cost modeling only. With > > > -fno-vect-cost-model it compiles faster for me but still a slow 30s and > > > 91% > > > in RA. > > > > There are numbers with -fno-vect-cost-model: > > > > Bisecting latest revisions > > a9e2ebe839d56416(24 Feb 2022 22:16)(ol...@adacore.com): [took: 36.06 s] > > result: OK > > 250f234988b62316(20 Apr 2021 09:51)(stefa...@linux.ibm.com): [took: 18.35 > > s] result: OK > > > > I'm going to find out where the change happensed. > > Which started with r12-2463-ga6291d88d5b6c17d. Wonder if it's related to hard register usage in pass_expand op1 = ix86_gen_scratch_sse_rtx (mode);
