https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114239
--- Comment #3 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:89c443a7e9a0780a52a698fb02d4f5173e025918 commit r14-9335-g89c443a7e9a0780a52a698fb02d4f5173e025918 Author: Richard Biener <rguent...@suse.de> Date: Wed Mar 6 10:31:02 2024 +0100 tree-optimization/114239 - rework reduction epilogue driving The following reworks vectorizable_live_operation to pass the live stmt to vect_create_epilog_for_reduction also for early breaks and a peeled main exit. This is to be able to figure the scalar definition to replace. This reverts the PR114192 fix as it is subsumed by this cleanup. PR tree-optimization/114239 * tree-vect-loop.cc (vect_get_vect_def): Remove. (vect_create_epilog_for_reduction): The passed in stmt_info should now be the live stmt that produces the scalar reduction result. Revert PR114192 fix. Base reduction info off info_for_reduction. Remove special handling of early-break/peeled, restore original vector def gathering. Make sure to pick the correct exit PHIs. (vectorizable_live_operation): Pass in the proper stmt_info for early break exits. * gcc.dg/vect/vect-early-break_122-pr114239.c: New testcase.
