https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81657
--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Fri Apr 13 08:35:32 2018 New Revision: 259366 URL: https://gcc.gnu.org/viewcvs?rev=259366&root=gcc&view=rev Log: PR middle-end/81657 * expr.h (enum block_op_methods): Add BLOCK_OP_NO_LIBCALL_RET. * expr.c (emit_block_move_hints): Handle BLOCK_OP_NO_LIBCALL_RET. * builtins.c (expand_builtin_memory_copy_args): Use BLOCK_OP_NO_LIBCALL_RET method for mempcpy with non-ignored target, handle dest_addr == pc_rtx. * gcc.dg/string-opt-1.c: Remove bogus comment. Expect a mempcpy call. Modified: trunk/gcc/ChangeLog trunk/gcc/builtins.c trunk/gcc/expr.c trunk/gcc/expr.h trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/string-opt-1.c
