https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115370
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Hongyu Wang <hong...@gcc.gnu.org>: https://gcc.gnu.org/g:83a765768510d1f329887116757d6818d7846717 commit r15-1293-g83a765768510d1f329887116757d6818d7846717 Author: Hongyu Wang <hongyu.w...@intel.com> Date: Thu Jun 13 00:18:32 2024 +0800 [APX CCMP] Add targetm.have_ccmp hook [PR115370] In cfgexpand, there is an optimization for branch which tests targetm.gen_ccmp_first == NULL. However for target like x86-64, the hook was implemented but it does not indicate that ccmp was enabled. Add a new target hook TARGET_HAVE_CCMP and replace the middle-end check for the existance of gen_ccmp_first to avoid misoptimization. gcc/ChangeLog: PR target/115370 PR target/115463 * target.def (have_ccmp): New target hook. * targhooks.cc (default_have_ccmp): New function. * targhooks.h (default_have_ccmp): New prototype. * doc/tm.texi.in: Add TARGET_HAVE_CCMP. * doc/tm.texi: Regenerate. * cfgexpand.cc (expand_gimple_cond): Call targetm.have_ccmp instead of checking if targetm.gen_ccmp_first exists. * expr.cc (expand_expr_real_gassign): Likewise. * config/i386/i386.cc (ix86_have_ccmp): New target hook to check if APX_CCMP enabled. (TARGET_HAVE_CCMP): Define.
