https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115395
--- Comment #7 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:4ed9c5df7efeb98e190573cca42a4fd40666c45f commit r15-1160-g4ed9c5df7efeb98e190573cca42a4fd40666c45f Author: Richard Biener <rguent...@suse.de> Date: Mon Jun 10 10:12:52 2024 +0200 tree-optimization/115395 - wrong-code with SLP reduction in epilog When we continue a non-SLP reduction from the main loop in the epilog with a SLP reduction we currently fail to handle an adjustment by the initial value because that's not a thing with SLP. As long as we have the possibility to mix SLP and non-SLP we have to handle it though. PR tree-optimization/115395 * tree-vect-loop.cc (vect_create_epilog_for_reduction): Handle STMT_VINFO_REDUC_EPILOGUE_ADJUSTMENT also for SLP reductions of group_size one. * gcc.dg/vect/pr115395.c: New testcase.
