https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100434
--- Comment #2 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:a564da506f52be66ade298b562417641e87b549f commit r12-656-ga564da506f52be66ade298b562417641e87b549f Author: Richard Biener <rguent...@suse.de> Date: Wed May 5 16:15:12 2021 +0200 tree-optimization/100434 - DSE aggregate call LHS This makes DSE consider aggregate LHS of calls as dead, for pure or const calls the whole stmt and for others by removing the LHS. 2021-05-05 Richard Biener <rguent...@suse.de> PR tree-optimization/100434 * tree-ssa-dse.c (initialize_ao_ref_for_dse): Handle call LHS. (dse_optimize_stmt): Handle call LHS by dropping the LHS or the whole call if it doesn't have other side-effects. (pass_dse::execute): Adjust. * gcc.dg/tree-ssa/ssa-dse-43.c: New testcase.
