[Bug tree-optimization/106860] [12/13 Regression] ICE in single_pred_edge, at basic-block.h:347

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106860

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:0386609923577e07354ee63754795b2f729e7e00

commit r13-2514-g0386609923577e07354ee63754795b2f729e7e00
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Sep 7 10:44:33 2022 +0200

    tree-optimization/106860 - fix profile scaling in split_loop

    The following fixes a mistake in loop splitting which assumes loop
    latches have a single predecessor and that edge is from the exit
    test.  Instead work from the single exit edge we have to find the
    edge towards the latch.

            PR tree-optimization/106860
            * tree-ssa-loop-split.cc (split_loop): Find the exit to
            latch edge from the loop exit edge instead of from the
            latch.  Verify we're going to find it.

            * g++.dg/opt/pr106860.C: New testcase.