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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/110888] Missing optimization for trivial MATMUL cases,
 requires -fno-signed-zeros
Date: Fri, 04 Aug 2023 15:45:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110888

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |fortran

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Hm, on second thoughts, signed zeros are an issue, resetting to Fortran.

Generally, we are in an intrinsic, so we can do whatever we please
(we certainly do in the library case, and this is expected behavior).

Having -ffast-math applied locally to the BLOCK that the matmul
is executed in would be a possibility.=