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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/95855] A missing ifcvt optimization to
 generate fcsel
Date: Tue, 30 Jun 2020 13:54:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95855

--- Comment #1 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:33d114f570b4a3583421c700396fd5945acebc28

commit r11-1731-g33d114f570b4a3583421c700396fd5945acebc28
Author: Yang Yang <yangyang305@huawei.com>
Date:   Tue Jun 30 18:04:31 2020 +0800

    tree-optimization/95855 - Add checks to avoid spoiling if-conversion if

    Add some checks in pass_splits_paths, so that pass_split_paths can
    recognize the missed if-conversion opportunity and do not duplicate the
    corresponding block.

    2020-06-30 Yang Yang <yangyang305@huawei.com>

    gcc/ChangeLog:

            PR tree-optimization/95855
            * gimple-ssa-split-paths.c (is_feasible_trace): Add extra
            checks to recognize a missed if-conversion opportunity when
            judging whether to duplicate a block.

    gcc/testsuite/ChangeLog

            PR tree-optimization/95855
            * gcc.dg/tree-ssa/split-path-12.c: New testcase.=