From: Devang Patel <dpatel@apple.com>
To: Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
Cc: "gcc@gcc.gnu.org list" <gcc@gcc.gnu.org>,
Jason Merrill <jason@redhat.com>,
Richard Henderson <rth@redhat.com>,
Dorit Naishlos <DORIT@il.ibm.com>,
Diego Novillo <dnovillo@redhat.com>
Subject: Re: [lno] [RFC] if-conversion and auto vectorizer
Date: Sat, 13 Mar 2004 22:41:00 -0000 [thread overview]
Message-ID: <63C299A6-753F-11D8-9A45-000393A91CAA@apple.com> (raw)
In-Reply-To: <20040313092438.GA6767@atrey.karlin.mff.cuni.cz>
On Mar 13, 2004, at 1:24 AM, Zdenek Dvorak wrote:
[snip]
>> # BLOCK 2
>> # PRED: 1 [79.0%] (true,exec)
>> <L1>:;
>> T.1_9 = if (1 && T.0_3 > 0)
>
> why this "1 &&" part?
Its because, I have not simplified conditional boolean expressions yet.
[snip]
>>
>> I spent lot of time unnecessary to create super block inside loop by
>> merging block 2 and 3 into block 1.
>>
>> If vectorizer can not vectorize this loop then it will be reverted to
>> original form using loop versioning. Am I on the right track ?
>
> I am not at all sure what you want to achieve with this transformation;
> it seems to me that you haven't done anything that could possibly make
> vectorizer's work easier.
After transforming statements, I should be able to merge all blocks
in one super block inside loop. Once that is done vectorizer just needs
to do one-to-one replacement.
--
Devang
next prev parent reply other threads:[~2004-03-13 22:41 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-04 19:59 Devang Patel
2004-03-04 20:12 ` Andrew Pinski
2004-03-04 20:39 ` Devang Patel
2004-03-04 21:03 ` Richard Henderson
2004-03-05 19:06 ` Devang Patel
2004-03-05 19:17 ` Diego Novillo
2004-03-05 19:22 ` Diego Novillo
2004-03-05 19:28 ` Devang Patel
2004-03-05 19:41 ` Diego Novillo
2004-03-05 19:44 ` Diego Novillo
2004-03-12 18:45 ` Devang Patel
2004-03-13 9:24 ` Zdenek Dvorak
2004-03-13 22:41 ` Devang Patel [this message]
2004-03-14 10:59 ` Dorit Naishlos
2004-03-14 10:57 Fw: " Dorit Naishlos
2004-03-14 19:22 ` Andrew Pinski
2004-03-14 22:31 ` Daniel Berlin
2004-03-15 2:29 ` Alex Rosenberg
2004-03-15 22:38 ` Richard Henderson
2004-03-15 23:08 ` Devang Patel
2004-03-15 23:20 ` Richard Henderson
2004-03-16 0:02 ` Devang Patel
2004-03-16 0:07 ` Diego Novillo
2004-03-16 0:45 ` Richard Henderson
2004-03-16 3:02 ` Diego Novillo
2004-03-16 3:33 ` Richard Henderson
2004-03-16 6:33 ` Devang Patel
2004-03-15 22:42 Robert Dewar
2004-03-15 23:08 ` Richard Henderson
2004-03-16 3:46 Chris Lattner
2004-03-16 5:33 Robert Dewar
2004-03-16 6:54 ` Richard Henderson
2004-03-16 12:27 Robert Dewar
2004-03-16 18:32 ` Richard Henderson
2004-03-16 22:51 ` Toon Moene
2004-03-16 23:10 ` Joseph S. Myers
2004-03-16 23:28 ` Toon Moene
2004-03-16 23:37 ` Richard Henderson
2004-03-16 23:42 ` Toon Moene
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