https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124555
--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Richard Biener <[email protected]>: https://gcc.gnu.org/g:8ca429aeafc2afc569900a00e77068c5e39985cb commit r14-12661-g8ca429aeafc2afc569900a00e77068c5e39985cb Author: Richard Biener <[email protected]> Date: Wed Mar 18 10:15:00 2026 +0100 tree-optimization/124555 - guard abs patterns for vector support The following adds missing vector support checks to abs producing match.pd patterns. The g++.dg/absvect.C shows that we previously then lowered this to non-vector unless you add -msse4 on x86_64 at least. PR tree-optimization/124555 * match.pd ((A - B) >=/> 0 ? (A - B) : (B - A) -> abs (A - B)): Guard the vector case with target_supports_op_p checks. ((A - B) <=/< 0 ? (A - B) : (B - A) -> -abs (A - B)): Likewise. ((type)A >=/> 0 ? A : -A -> abs (A)): Likewise. ((type)A <=/< 0 ? A : -A -> -abs (A)): Likewise. * gcc.dg/torture/pr124555.c: New testcase. * g++.dg/absvect.C: Restrict dump scan to x86-64 and force -msse4 there. (cherry picked from commit c97e6d7be7d51cd812b2acde680cd9704bae3c70)
