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From: "slyfox at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/115161] [15 Regression] highway-1.0.7 miscompilation of
 some SSE2 intrinsics
Date: Mon, 20 May 2024 11:26:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115161

Sergei Trofimovich <slyfox at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |roger at nextmovesoftware =
dot com,
                   |                            |sayle at gcc dot gnu.org

--- Comment #1 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
Bisect landed on r15-352-gf2449b55fb2d32

  commit f2449b55fb2d32fc4200667ba79847db31f6530d
  Author: Roger Sayle <roger@nextmovesoftware.com>
  Date:   Thu May 9 22:45:54 2024 +0100

    Constant fold {-1,-1} << 1 in simplify-rtx.cc

But I'm not sure if it's the real cause or the code moved around enough. The
sample is somewhat fragile and resisted minimization.=