https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100843
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alexandre Oliva <aol...@gcc.gnu.org>: https://gcc.gnu.org/g:c95a9f1ee7ebd461cbced455271a993bae3a42b6 commit r12-5983-gc95a9f1ee7ebd461cbced455271a993bae3a42b6 Author: Alexandre Oliva <ol...@adacore.com> Date: Wed Dec 15 02:22:33 2021 -0300 [PR100843] store by mult pieces: punt on max_len < min_len The testcase confuses the code that detects min and max len for the memset, so max_len ends up less than min_len. That shouldn't be possible, but the testcase requires us to handle this case. The store-by-mult-pieces algorithm actually relies on min and max lengths, so if we find them to be inconsistent, the best we can do is punting. for gcc/ChangeLog PR middle-end/100843 * builtins.c (try_store_by_multiple_pieces): Fail if min_len is greater than max_len. for gcc/testsuite/ChangeLog PR middle-end/100843 * gcc.dg/pr100843.c: New.
