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From: "pterjan at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/96326] Incorrect loop optimization at -O3
Date: Mon, 27 Jul 2020 01:48:50 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96326

--- Comment #2 from Pascal Terjan <pterjan at gmail dot com> ---
No:

$ gcc -O3 -Wall -fno-strict-aliasing  t.c; ./a.out=20
24

However -fno-tree-loop-vectorize fixes it:

$ gcc -O3 -Wall -fno-tree-loop-vectorize t.c; ./a.out=20
68=