https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101373
--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-11 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:ee875b63b22e30a0dcb4b05f7532c2c416ba6cd0 commit r11-8875-gee875b63b22e30a0dcb4b05f7532c2c416ba6cd0 Author: Richard Biener <rguent...@suse.de> Date: Tue Aug 17 08:38:35 2021 +0200 tree-optimization/101868 - avoid PRE of trapping mems across calls This backports a fix for the omission of a check of trapping mems when hoisting them across calls that might not return. This was originally done as part of a fix to handle const functions that throw properly. 2021-08-17 Richard Biener <rguent...@suse.de> PR tree-optimization/101373 PR tree-optimization/101868 * tree-ssa-pre.c (prune_clobbered_mems): Also prune trapping references when the BB may not return. * gcc.dg/lto/pr101868_0.c: New testcase. * gcc.dg/lto/pr101868_1.c: Likewise. * gcc.dg/lto/pr101868_2.c: Likewise. * gcc.dg/lto/pr101868_3.c: Likewise.
