https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118795
--- Comment #18 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:3d4bfd43059c3a92b9608d3d17f8c045a58edda1 commit r15-8918-g3d4bfd43059c3a92b9608d3d17f8c045a58edda1 Author: Richard Biener <rguent...@suse.de> Date: Tue Mar 25 13:45:36 2025 +0100 middle-end/118795 - fix can_vec_perm_const_p query in match.pd When expanding to RTL we always use vec_perm_indices with two operands which can make a difference with respect to supported vs. unsupported. So the following adjusts a query in match.pd for target support which got this "wrong" and using 1 for a equal operand permute. PR middle-end/118795 * match.pd (vec_perm <vec_perm <a, b>> -> vec_perm <a, b>): Use the appropriate check to see whether the original outer permute was supported. * g++.dg/torture/pr118795.C: New testcase.
