https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111657
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>: https://gcc.gnu.org/g:c6bff80d786919f2f64e8a9f3179d6d36888bdb3 commit r14-4418-gc6bff80d786919f2f64e8a9f3179d6d36888bdb3 Author: Uros Bizjak <ubiz...@gmail.com> Date: Thu Oct 5 17:40:37 2023 +0200 i386: Improve memory copy from named address space [PR111657] The stringop strategy selection algorithm falls back to a libcall strategy when it exhausts its pool of available strategies. The memory area copy function (memcpy) is not availabe from the system library for non-default address spaces, so the compiler emits the most trivial byte-at-a-time copy loop instead. The compiler should instead emit an optimized copy loop as a fallback for non-default address spaces. PR target/111657 gcc/ChangeLog: * config/i386/i386-expand.cc (alg_usable_p): Reject libcall strategy for non-default address spaces. (decide_alg): Use loop strategy as a fallback strategy for non-default address spaces. gcc/testsuite/ChangeLog: * gcc.target/i386/pr111657.c: New test.
