https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108129
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:75cda3be0232f745cda4e177d514f6900390af0b commit r13-6902-g75cda3be0232f745cda4e177d514f6900390af0b Author: Richard Biener <rguent...@suse.de> Date: Tue Mar 28 12:42:14 2023 +0200 bootstrap/84402 - improve (match ...) code generation The following avoids duplicating matching code for (match ...) in match.pd when possible. That's more easily possible for (match ...) than simplify because we do not need to handle common matches (those would be diagnosed only during compiling) nor is the result able to inspect the active operator. Specifically this reduces the size of the generated matches for the atomic ops as noted in PR108129. gimple-match.cc shrinks from 245k lines to 209k lines with this patch. PR bootstrap/84402 PR tree-optimization/108129 * genmatch.cc (lower_for): For (match ...) delay substituting into the match operator if possible. (dt_operand::gen_gimple_expr): For user_id look at the first substitute for determining how to access operands. (dt_operand::gen_generic_expr): Likewise. (dt_node::gen_kids): Properly sort user_ids according to their substitutes. (dt_node::gen_kids_1): Code-generate user_id matching.
