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From: "suckfish at ihug dot co dot nz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/37807] Exponential compile time with MMX builtins.
Date: Sun, 12 Oct 2008 04:48:00 -0000 [thread overview]
Message-ID: <20081012044645.32357.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37807-2018@http.gcc.gnu.org/bugzilla/>
------- Comment #8 from suckfish at ihug dot co dot nz 2008-10-12 04:46 -------
Created an attachment (id=16484)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16484&action=view)
Test-case modfied to take exponential time on trunk too.
It turns out that it was fast on trunk because inlining is less aggressive
there.
Making some functions inline causes compile time to blow up with trunk also.
Updated test case attached also.
PS. The correct fix for the rotate on trunk was to use
__builtin_ia32_psrldi/pslldi.
--
suckfish at ihug dot co dot nz changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #16482|0 |1
is obsolete| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37807
next prev parent reply other threads:[~2008-10-12 4:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-11 21:22 [Bug c/37807] New: " suckfish at ihug dot co dot nz
2008-10-11 21:22 ` [Bug c/37807] " suckfish at ihug dot co dot nz
2008-10-11 21:36 ` suckfish at ihug dot co dot nz
2008-10-11 22:07 ` rguenth at gcc dot gnu dot org
2008-10-11 22:24 ` suckfish at ihug dot co dot nz
2008-10-11 23:03 ` suckfish at ihug dot co dot nz
2008-10-11 23:25 ` suckfish at ihug dot co dot nz
2008-10-12 2:40 ` suckfish at ihug dot co dot nz
2008-10-12 4:48 ` suckfish at ihug dot co dot nz [this message]
2008-10-12 5:23 ` suckfish at ihug dot co dot nz
2008-10-12 5:28 ` suckfish at ihug dot co dot nz
2008-10-12 10:31 ` [Bug middle-end/37807] " rguenth at gcc dot gnu dot org
2008-11-10 9:11 ` uros at gcc dot gnu dot org
2008-11-10 10:46 ` uros at gcc dot gnu dot org
2008-11-10 12:23 ` uros at gcc dot gnu dot org
2008-11-10 12:26 ` ubizjak at gmail dot com
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