https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105333
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:daf9bd6c5c7835bdbca47c8f798bd110cc8f5be8 commit r10-10711-gdaf9bd6c5c7835bdbca47c8f798bd110cc8f5be8 Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Apr 22 13:38:11 2022 +0200 rtlanal: Fix up replace_rtx [PR105333] The following testcase FAILs, because replace_rtx replaces a REG with CONST_WIDE_INT inside of a SUBREG, which is an invalid transformation because a SUBREG relies on SUBREG_REG having non-VOIDmode but CONST_WIDE_INT has VOIDmode. replace_rtx already has code to deal with it, but it was doing it only for CONST_INTs. The following patch does it also for VOIDmode CONST_DOUBLE or CONST_WIDE_INT. 2022-04-22 Jakub Jelinek <ja...@redhat.com> PR rtl-optimization/105333 * rtlanal.c (replace_rtx): Use simplify_subreg or simplify_unary_operation if CONST_SCALAR_INT_P rather than just CONST_INT_P. * gcc.dg/pr105333.c: New test. (cherry picked from commit 7092b7aea122a91824d048aeb23834cf1d19b1a1)
