https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111294
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #1) > In .optimized we have: > <bb 4> [local count: 118111600]: > # _31 = PHI <5(2), 0(3)> > _6 = (int) a.9_28; > _8 = _31 <= 3; > _9 = (int) _8; > if (_6 != _9) > goto <bb 5>; [66.00%] > else > goto <bb 6>; [34.00%] > > Except nothing optimizes _8 into the phi post pre (note _31 is only used in > the definition of _8 even). But optimizing that does not help here. Someone who understands jump threading should look into this.
