https://gcc.gnu.org/g:d4d592b6dcc6b92f79dfd292dad07c5b2b65063f
commit d4d592b6dcc6b92f79dfd292dad07c5b2b65063f Author: Andrew Pinski <[email protected]> Date: Sun Dec 28 12:50:12 2025 -0800 ifcvt: Allow non-comparisons against 0 in noce_try_cond_zero_arith Like r16-6332-g2a84a753afcf37 but instead of just allowing any comparisons against 0, this allows all comparisons. I mentioned this in https://gcc.gnu.org/pipermail/gcc-patches/2025-December/704463.html. gcc/ChangeLog: * ifcvt.cc (noce_try_cond_zero_arith): Remove restriction on comparison against 0. Signed-off-by: Andrew Pinski <[email protected]> (cherry picked from commit cc515677b95d292d619c1fe6748a0d91385ca3ff) Diff: --- gcc/ifcvt.cc | 3 --- 1 file changed, 3 deletions(-) diff --git a/gcc/ifcvt.cc b/gcc/ifcvt.cc index e2f98fbd5fbc..36ba65286ff9 100644 --- a/gcc/ifcvt.cc +++ b/gcc/ifcvt.cc @@ -3160,9 +3160,6 @@ noce_try_cond_zero_arith (struct noce_if_info *if_info) if (!noce_simple_bbs (if_info)) return false; - if (!REG_P (XEXP (cond, 0)) || !rtx_equal_p (XEXP (cond, 1), const0_rtx)) - return false; - a = copy_rtx (if_info->a); b = copy_rtx (if_info->b);
