https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119133
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Richard Sandiford <rsand...@gcc.gnu.org>: https://gcc.gnu.org/g:5ae621e2e86c00d1fb13ef6839d0c3bace762ac8 commit r15-7880-g5ae621e2e86c00d1fb13ef6839d0c3bace762ac8 Author: Richard Sandiford <richard.sandif...@arm.com> Date: Fri Mar 7 10:18:35 2025 +0000 aarch64: Use force_lowpart_subreg in a BFI splitter [PR119133] lowpart_subreg ICEs are the gift that keeps giving. This is another case where we need to use force_lowpart_subreg instead, to handle cases where the input is already a subreg and where the combined subreg is not allowed as a single operation. We don't need to check can_create_pseudo_p since the input should be a hard register rather than a subreg if !can_create_pseudo_p. gcc/ PR target/119133 * config/aarch64/aarch64.md (*aarch64_bfi<GPI:mode><ALLX:mode>_<SUBDI_BITS>): Use force_lowpart_subreg. gcc/testsuite/ PR target/119133 * gcc.dg/torture/pr119133.c: New test.
