https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112525
--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jiu Fu Guo <guoji...@gcc.gnu.org>: https://gcc.gnu.org/g:4759383245ac97a5c83c0272f0a831f2a26ea5c1 commit r14-6674-g4759383245ac97a5c83c0272f0a831f2a26ea5c1 Author: Jiufu Guo <guoji...@linux.ibm.com> Date: Tue Dec 19 13:03:06 2023 +0800 treat argp-based mem as frame related in dse The issue mentioned in PR112525 would be able to be handled by updating dse.cc to treat arg_pointer_rtx similarly with frame_pointer_rtx. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30271#c10 also mentioned this idea. And arpg area may be used to pass argument to callee. So, it would be needed to check if call insns are using that mem. PR rtl-optimization/112525 PR target/30271 gcc/ChangeLog: * dse.cc (get_group_info): Add arg_pointer_rtx as frame_related. (check_mem_read_rtx): Add parameter to indicate if it is checking mem for call insn. (scan_insn): Add mem checking on call usage. gcc/testsuite/ChangeLog: * gcc.target/powerpc/pr112525.c: New test. * gcc.target/powerpc/pr30271.c: New test.
