https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100204
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>: https://gcc.gnu.org/g:f03b8f595b6350732bb0a9a69557c5ed2af085b2 commit r14-8436-gf03b8f595b6350732bb0a9a69557c5ed2af085b2 Author: Andrew Pinski <quic_apin...@quicinc.com> Date: Thu Jan 25 08:30:36 2024 -0800 aarch64: Fix undefinedness while testing the J constraint [PR100204] The J constraint can invoke undefined behavior due to it taking the negative of the ival if ival was HWI_MIN. The fix is simple as casting to `unsigned HOST_WIDE_INT` before doing the negative of it. This does that. Committed as obvious after build/test for aarch64-linux-gnu. gcc/ChangeLog: PR target/100204 * config/aarch64/constraints.md (J): Cast to `unsigned HOST_WIDE_INT` before taking the negative of it. Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
