https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94591
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alex Coplan <acop...@gcc.gnu.org>: https://gcc.gnu.org/g:98452668d362bb9e6358f7eb5cff69f4f5ab1d45 commit r11-502-g98452668d362bb9e6358f7eb5cff69f4f5ab1d45 Author: Alex Coplan <alex.cop...@arm.com> Date: Tue May 19 20:33:20 2020 +0100 [aarch64] PR target/94591: Don't generate invalid REV64 insns This fixes PR94591. The problem was the function aarch64_evpc_rev_local() matching vector permutations that were not reversals. In particular, prior to this patch, this function matched the identity permutation which led to generating bogus REV64 insns which were rejected by the assembler. gcc/ PR target/94591 * config/aarch64/aarch64.c (aarch64_evpc_rev_local): Don't match identity permutation. gcc/testsuite/ PR target/94591 * gcc.c-torture/execute/pr94591.c: New test.
