https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89074
--- Comment #17 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:b834435c8fa4cb9424787fe3044a49fef7992de8 commit r12-6726-gb834435c8fa4cb9424787fe3044a49fef7992de8 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Jan 19 09:26:13 2022 +0100 fold-const: Optimize &"foo"[0] == "foo" [PR89074] This is a non-C++ related part from the PR89074 address_compare changes. For "foo" == "foo" we already optimize this from the (cmp @0 @0) simplification, because we use operand_equal_p in that case and operand_equal_p also compares the STRING_CSTs bytes rather than just addresses. 2022-01-19 Jakub Jelinek <ja...@redhat.com> PR c++/89074 * fold-const.cc (address_compare): Consider different STRING_CSTs with the same lengths that memcmp the same as equal, not different. * gcc.dg/tree-ssa/pr89074.c: New test.
