https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112816
--- Comment #13 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:0246a37ebdef4ffc863fe4c56e812c0614026e02 commit r12-10052-g0246a37ebdef4ffc863fe4c56e812c0614026e02 Author: Jakub Jelinek <ja...@redhat.com> Date: Mon Dec 4 09:00:18 2023 +0100 i386: Fix up signbit<mode>2 expander [PR112816] The following testcase ICEs, because the signbit<mode>2 expander uses an explicit SUBREG in the pattern around match_operand with register_operand predicate. If we are unlucky enough that expansion tries to expand it with some SUBREG as operands[1], we have two nested SUBREGs in the IL, which is not valid and causes ICE later. 2023-12-04 Jakub Jelinek <ja...@redhat.com> PR target/112816 * config/i386/sse.md (signbit<mode>2): Force operands[1] into a REG. * gcc.target/i386/sse2-pr112816.c: New test. (cherry picked from commit 994d6dc64435d6b7c50accca9941ee7decd92a22)
