https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79173
--- Comment #18 from CVS 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:b6ca11407d4f5d16ccfb580ea2d3d9aa08d7cd11 commit r14-1835-gb6ca11407d4f5d16ccfb580ea2d3d9aa08d7cd11 Author: Jakub Jelinek <ja...@redhat.com> Date: Thu Jun 15 09:05:01 2023 +0200 i386: Add peephole2 patterns to improve add with carry or subtract with borrow with memory destination [PR79173] This patch adds various peephole2s which help to recognize add with carry or subtract with borrow with memory destination. 2023-06-14 Jakub Jelinek <ja...@redhat.com> PR middle-end/79173 * config/i386/i386.md (*sub<mode>_3, @add<mode>3_carry, addcarry<mode>, @sub<mode>3_carry, *add<mode>3_cc_overflow_1): Add define_peephole2 TARGET_READ_MODIFY_WRITE/-Os patterns to prefer using memory destination in these patterns.
