https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118801
--- Comment #6 from GCC 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:e1c49f413c8c892a61612b3b89de0607ff7ba893 commit r15-7878-ge1c49f413c8c892a61612b3b89de0607ff7ba893 Author: Richard Biener <rguent...@suse.de> Date: Mon Feb 10 10:23:45 2025 +0100 middle-end/118801 - excessive redundant DEBUG BEGIN_STMT The following addresses the fact that we keep an excessive amount of redundant DEBUG BEGIN_STMTs - in the testcase it sums up to 99.999% of all stmts, sucking up compile-time in IL walks. The patch amends the GIMPLE DCE code that elides redundant DEBUG BIND stmts, also pruning uninterrupted sequences of DEBUG BEGIN_STMTs, keeping only the last of each set of DEBUG BEGIN_STMT with unique location. PR middle-end/118801 * tree-ssa-dce.cc (eliminate_unnecessary_stmts): Prune sequences of uninterrupted DEBUG BEGIN_STMTs, keeping only the last of a set with unique location.
