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From: "gabravier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/98908] Failure to optimize arithmetic
 involving struct members into operating on the entire struct
Date: Fri, 03 Sep 2021 01:09:13 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 11.0
X-Bugzilla-Keywords: missed-optimization
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X-Bugzilla-Resolution: FIXED
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98908

--- Comment #8 from Gabriel Ravier <gabravier at gmail dot com> ---
Well, fixing a bug filed in 2021 in GCC 9 seems quite hard. Are you confused
about the nature of the bug ? The first example in the description *is* the=
 one
whose optimization the bug is about, and it is the one that didn't optimize
properly in trunk at the time of the bug being filed, back when trunk was G=
CC
11.0. I'm pretty sure this bug should be considering as fixed for GCC 12
considering it seems to have been fixed somewhere between GCC 11 (which has=
 the
bad code generation) and trunk (which doesn't).=