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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/104265] Missed vectorization in 526.blender_r
Date: Fri, 28 Jan 2022 07:07:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104265

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends on|                            |104240
             Blocks|                            |53947
           Keywords|                            |missed-optimization

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
One of the issues is that the compares are not uniform in the IL but partly
if-combined.  That will make the matching process for the initial SLP seed
quite tedious.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104240
[Bug 104240] SLP discovery does not consider swapping comparisons=