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Subject: [Bug tree-optimization/106474] DCE depends on how if expressions are
 nested
Date: Tue, 02 Aug 2022 18:32:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106474

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andrew Macleod <amacleod@gcc.gnu.org>:

https://gcc.gnu.org/g:87dd4c8c83768aafad92588853fd84a6070553d6

commit r13-1938-g87dd4c8c83768aafad92588853fd84a6070553d6
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Fri Jul 29 12:05:38 2022 -0400

    Check equivalencies when calculating range on entry.

    When propagating on-entry values in the cache, checking if any equivale=
nce
    has a known value can improve results.  No new calculations are made.
    Only queries via dominators which do not populate the cache are checked.

            PR tree-optimization/106474
            gcc/
            * gimple-range-cache.cc (ranger_cache::fill_block_cache): Query
            range of equivalences that may contribute to the range.

            gcc/testsuite/
            * g++.dg/pr106474.C: New.=