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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/104530] [12 Regression] Dead Code Elimination
 Regression at -O3 (trunk vs. 11.2.0)
Date: Mon, 14 Feb 2022 16:47:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104530

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.0
                 CC|                            |jakub at gcc dot gnu.org
           Priority|P3                          |P1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r12-7128-gc6bb1db76b3ac127aff7dacf391fc1798a94bb7d
The comparison is done before dereferencing pointer, but unlike the PR104288
case there is no call that could fail to return in between.
I think PR104288 has been fixed on the 11 branch too, so the question is if
this still works there.=