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Subject: [Bug tree-optimization/103278] [12 Regression] Recent change to
 cddce inhibits switch optimization
Date: Thu, 18 Nov 2021 09:02:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103278

--- Comment #6 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:e28afbb90f8eca31d0a658e92e2007eb0db2a964

commit r12-5365-ge28afbb90f8eca31d0a658e92e2007eb0db2a964
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Nov 18 09:49:38 2021 +0100

    testsuite/103278 - adjust gcc.dg/tree-ssa/if-to-switch-3.c

    Analysis shows that after the CD-DCE change we produce better
    code which makes if-to-switch run into case-values-threshold on
    some architectures, thus the switch is deemed to simple to be
    worth generating.  The following statically provides
    --param case-values-threshold to make the testcase less
    target dependent.

    2021-11-18  Richard Biener  <rguenther@suse.de>

            PR testsuite/103278
            * gcc.dg/tree-ssa/if-to-switch-3.c: Supply
            --param case-values-threshold=3D4.=