https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102566
--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Andrew Pinski from comment #16) > (In reply to H.J. Lu from comment #14) > > Created attachment 51556 [details] > > The v5 patch > > > > Changes in v5: > > > > 1. Check SSA_NAME before SSA_NAME_OCCURS_IN_ABNORMAL_PHI. > > Why don't you just move this to match.pd instead as suggested by Richard B. > on the mailing list? Then you get the check for > SSA_NAME_OCCURS_IN_ABNORMAL_PHI for free and such. Plus other passes will > do the optimization too .... Without __atomic_fetch_or_* or __atomic_fetch_and_*, the conversion isn't needed. We also need to check the mask of the atomic builtin.
