https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100923
--- Comment #11 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:7c469a9fc785505dc350aba60311812c2bb0c1b5 commit r15-204-g7c469a9fc785505dc350aba60311812c2bb0c1b5 Author: Richard Biener <rguent...@suse.de> Date: Wed Feb 28 10:08:31 2024 +0100 tree-optimization/100923 - re-do VN with contextual PTA info fix The following implements the gist of the PR100923 fix in a leaner (and more complete) way by realizing that all ao_ref_init_from_vn_reference uses need to have an SSA name in the base valueized with availability in mind. Instead of re-valueizing the whole chain of operands we can simply only and always valueize the SSA name we put in the base. This handles also two omitted places in vn_reference_lookup_3. PR tree-optimization/100923 * tree-ssa-sccvn.cc (ao_ref_init_from_vn_reference): Valueize base SSA_NAME. (vn_reference_lookup_3): Adjust vn_context_bb around calls to ao_ref_init_from_vn_reference. (vn_reference_lookup_pieces): Revert original PR100923 fix. (vn_reference_lookup): Likewise.
