https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98601
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:86e761b46de55532db35f257ea67071512804a58 commit r9-9442-g86e761b46de55532db35f257ea67071512804a58 Author: Jakub Jelinek <ja...@redhat.com> Date: Sat Apr 10 12:46:09 2021 +0200 rtlanal: Another fix for VOIDmode MEMs [PR98601] This is a sequel to the PR85022 changes, inline-asm can (unfortunately) introduce VOIDmode MEMs and in PR85022 they have been changed so that we don't pretend we know their size (as opposed to assuming they have zero size). This time we ICE in rtx_addr_can_trap_p_1 because it assumes that all memory but BLKmode has known size. The patch just treats VOIDmode MEMs like BLKmode in that regard. And, the STRICT_ALIGNMENT change is needed because VOIDmode has GET_MODE_SIZE of 0 and we don't want to check if something is a multiple of 0. 2021-04-10 Jakub Jelinek <ja...@redhat.com> PR rtl-optimization/98601 * rtlanal.c (rtx_addr_can_trap_p_1): Allow in assert unknown size not just for BLKmode, but also for VOIDmode. For STRICT_ALIGNMENT unaligned_mems handle VOIDmode like BLKmode. * gcc.dg/torture/pr98601.c: New test. (cherry picked from commit e68ac8c2b46997af1464f2549ac520a192c928b1)
