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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111652] [14 Regression] wrong code at -O3 on
 x86_64-linux-gnu
Date: Mon, 02 Oct 2023 17:58:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111652

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |carll at gcc dot gnu.org

--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I ran git bisect on POWER (gcc120) and strangely got this as the
first bad commit:

b51795c832cf6e724d61919eb18a383223b76694 is the first bad commit
commit b51795c832cf6e724d61919eb18a383223b76694
Author: Carl Love <cel@us.ibm.com>
Date:   Wed Jul 26 11:31:53 2023 -0400

    rs6000, fix vec_replace_unaligned built-in arguments

    The first argument of the vec_replace_unaligned built-in should always =
be
    of type vector unsigned char, as specified in gcc/doc/extend.texi.

    This patch fixes the builtin definitions and updates the test cases to =
use
    the correct arguments.  The original test file is renamed and a second =
test
    file is added for a new test case.

This is weird because the problem also occurs on x86_64.=