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From: "roger at nextmovesoftware dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/115351] [14/15 regression] pointless movs when passing by value on x86-64
Date: Wed, 05 Jun 2024 23:33:16 +0000 [thread overview]
Message-ID: <bug-115351-4-3vgnzJ8DwQ@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-115351-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115351
Roger Sayle <roger at nextmovesoftware dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |roger at nextmovesoftware dot com
--- Comment #3 from Roger Sayle <roger at nextmovesoftware dot com> ---
I have a fix (to ix86_rtx_costs) that I'm bootstrapping and regression testing.
By making concatditi3 slightly cheaper than *insvti_highpart (COSTS_N_INSN(2)
vs. COSTS_N_INSNS(2)+1), fwprop is able to do the right.
next prev parent reply other threads:[~2024-06-05 23:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-05 3:14 [Bug c++/115351] New: [14 " michael.kenzel at gmail dot com
2024-06-05 7:10 ` [Bug rtl-optimization/115351] [14/15 " rguenth at gcc dot gnu.org
2024-06-05 7:21 ` liuhongt at gcc dot gnu.org
2024-06-05 23:33 ` roger at nextmovesoftware dot com [this message]
2024-06-07 13:04 ` [Bug target/115351] " cvs-commit at gcc dot gnu.org
2024-06-08 14:51 ` [Bug target/115351] [14 " roger at nextmovesoftware dot com
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