https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82524
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 42346 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42346&action=edit gcc8-pr82524.patch Perhaps it could, but I think such a change isn't at least backportable and not sure how much work would that be, after all, I think LRA usually works with insn operands, not RTL that wraps them, so this would need to be an exception. Here is an attempt to adjust the affected patterns, some of them with match_dups, others with rtx_equal_p in conditions. Let me try to write some testcase that attempts to test all the patterns whether they can be matched if there is matching target.
