https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98973
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Richard Biener from comment #6) > Btw, -fgcse-sm is nowhere enabled by default (same applies to -fgcse-las), > we should consider removing these optimizations (though -fgcse-las at least > sounds > useful and I wonder why it is not enabled). GCSE store-motion should be > re-implemented on GIMPLE, replacing the sink pass (there were previous > attempts in implementing SSU-PRE). > > A comment in store-motion.c claims > > /* This pass implements downward store motion. > As of May 1, 2009, the pass is not enabled by default on any target, > but bootstrap completes on ia64 and x86_64 with the pass enabled. */ > > I'm trying if enabling it by default still bootstraps & tests OK on x86-64 > (also enabling gcse-las at the same time..) It does. Extra FAILs are FAIL: c-c++-common/guality/Og-dce-2.c -Og line 17 ptr->a == 1 FAIL: c-c++-common/guality/Og-dce-2.c -Og -flto line 17 ptr->a == 1
