https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109849
--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jan Hubicka <hubi...@gcc.gnu.org>: https://gcc.gnu.org/g:c2ebccc97190a978a44e341516b488f02a78c598 commit r14-2101-gc2ebccc97190a978a44e341516b488f02a78c598 Author: Jan Hubicka <j...@suse.cz> Date: Mon Jun 26 18:29:39 2023 +0200 Fix profile of forwarders produced by cd-dce compiling the testcase from PR109849 (which uses std:vector based stack to drive a loop) with profile feedbakc leads to profile mismatches introduced by tree-ssa-dce. This is the new code to produce unified forwarder blocks for PHIs. I am not including the testcase itself since checking it for Invalid sum is probably going to be too fragile and this should show in our LNT testers. The patch however fixes the mismatch. Bootstrapped/regtested x86_64-linux and plan to commit it shortly. gcc/ChangeLog: PR tree-optimization/109849 * tree-ssa-dce.cc (make_forwarders_with_degenerate_phis): Fix profile count of newly constructed forwarder block.
