[Bug tree-optimization/103317] [12 regression] Spec 2017 benchmark blender_r fails with -Ofast on PowerPc (power9, power10)

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103317

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>:

https://gcc.gnu.org/g:09d462146b3107c665265b11ad925c61a91c6efb

commit r12-5393-g09d462146b3107c665265b11ad925c61a91c6efb
Author: Andrew Pinski <apin...@marvell.com>
Date:   Thu Nov 18 23:38:30 2021 +0000

    Fix PR 103317, ICE after PHI-OPT, minmax_replacement producing invalid SSA

    The problem is r12-5300-gf98f373dd822b35c allows phiopt to recognize more
basic blocks
    but missed one location where the basic block does not need to be empty but
still
    needs to have a single predecessor. This patch fixes that over sight.

    OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.

            PR tree-optimization/103317

    gcc/ChangeLog:

            * tree-ssa-phiopt.c (minmax_replacement): For the non empty
            middle bb case, check to make sure it has a single predecessor.

    gcc/testsuite/ChangeLog:

            * gcc.c-torture/compile/pr103317-1.c: New test.