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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/110587] [14 regression] 96% pr28071.c compile
 time regression since r14-2337-g37a231cc7594d1
Date: Mon, 17 Jul 2023 10:52:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110587

Martin Jambor <jamborm at gcc dot gnu.org> changed:

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

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Oops sorry, indeed, the much bigger regression is because of:

commit 8911879415d6c2a7baad88235554a912887a1c5c
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Fri Jul 14 18:10:05 2023 +0100

    i386: Improved insv of DImode/DFmode {high,low}parts into TImode.

    This is the next piece towards a fix for (the x86_64 ABI issues affecti=
ng)
    PR 88873.  This patch generalizes the recent tweak to ix86_expand_move
    for setting the highpart of a TImode reg from a DImode source using
    *insvti_highpart_1, to handle both DImode and DFmode sources, and also
    use the recently added *insvti_lowpart_1 for setting the lowpart.

    Although this is another intermediate step (not yet a fix), towards
    enabling *insvti and *concat* patterns to be candidates for TImode STV
    (by using V2DI/V2DF instructions), it already improves things a little.
    [...]=