https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106063
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:13d23c313374e15186f33fa6d57a0c9fd5d8b486 commit r12-8625-g13d23c313374e15186f33fa6d57a0c9fd5d8b486 Author: Tamar Christina <tamar.christ...@arm.com> Date: Fri Jul 8 08:30:22 2022 +0100 middle-end: don't lower past veclower [PR106063] Hi All, My previous patch can cause a problem if the pattern matches after veclower as it may replace the construct with a vector sequence which the target may not directly support. As such don't perform the rewriting if after veclower unless the target supports the operation. If before veclower do the rewriting as well if the target didn't support the original operation either. gcc/ChangeLog: PR tree-optimization/106063 * match.pd: Do not apply pattern after veclower is not supported. gcc/testsuite/ChangeLog: PR tree-optimization/106063 * gcc.dg/pr106063.c: New test. (cherry picked from commit f7854e2faf7640230062dec3596e71773ca500ed)
