https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112962
--- Comment #17 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:02c30fdad2f46a1f7b4e30d0eff0ac275cd108a5 commit r14-6485-g02c30fdad2f46a1f7b4e30d0eff0ac275cd108a5 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Dec 13 11:34:12 2023 +0100 i386: Fix ICE on __builtin_ia32_pabsd128 without lhs [PR112962] The following patch fixes ICE on the testcase in similar way to how other folded builtins are handled in ix86_gimple_fold_builtin when they don't have a lhs; these builtins are const or pure, so normally DCE would remove them later, but with -O0 that isn't guaranteed to happen, and during expansion if they are marked TREE_SIDE_EFFECTS it might still be attempted to be expanded. This removes them right away during the folding. Initially I wanted to also change all gsi_replace last args in that function to true, but Andrew pointed to PR107209, so I've kept them as is. 2023-12-13 Jakub Jelinek <ja...@redhat.com> PR target/112962 * config/i386/i386.cc (ix86_gimple_fold_builtin): For shifts and abs without lhs replace with nop. * gcc.target/i386/pr112962.c: New test.
