https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102986
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:4a9e92164a547afcf8cd3fc593c7660238ad2d59 commit r12-7777-g4a9e92164a547afcf8cd3fc593c7660238ad2d59 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Mar 23 10:29:37 2022 +0100 testsuite: Fix up sse2-v1ti-shift-3.c test [PR102986] This test is dg-do run and invokes UB when these rotate functions are called with 0 as second argument. There are some other tests that do this but they are dg-do compile only and not even call those functions at all, so it IMHO doesn't matter that they are only well defined for [1,127] and not [0,127]. The following patch fixes it, we pattern recognize both forms as rotates and we emit identical assembly. 2022-03-23 Jakub Jelinek <ja...@redhat.com> PR target/102986 * gcc.target/i386/sse2-v1ti-shift-3.c (rotr_v1ti, rotl_v1ti, rotr_ti, rotl_ti): Use -i&127 instead of 128-i to avoid UB on i == 0.
