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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/94877] Failure to simplify ~(x + 1) to -2 - x
Date: Wed, 06 May 2020 14:55:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94877

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm not sure why this is considered a simplification, two insns vs. two, an=
d on
the subtraction it isn't specific to just one target, but I think for most =
the
constant will need to be forced into register, the immediates the instructi=
ons
have is mostly for the second operand.=