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From: "irar at il dot ibm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/37150] vectorizer misses some loops
Date: Thu, 06 Aug 2009 10:49:00 -0000	[thread overview]
Message-ID: <20090806104923.20802.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37150-6642@http.gcc.gnu.org/bugzilla/>



------- Comment #10 from irar at il dot ibm dot com  2009-08-06 10:49 -------
Yes. The problem is that only a basic implementation was added. To vectorize
this code several improvements must be done: support stmt group sizes greater
than vector size, allow loads and stores to the same location, initiate SLP
analysis from groups of loads, support misaligned access, etc. 

Finding a benchmark could really help to push these items to the top of
vectorizer's todo list.

Ira


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37150


  parent reply	other threads:[~2009-08-06 10:49 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-18 15:34 [Bug middle-end/37150] New: vectorizer issue jv244 at cam dot ac dot uk
2008-08-18 15:35 ` [Bug middle-end/37150] " jv244 at cam dot ac dot uk
2008-08-18 15:56 ` rguenth at gcc dot gnu dot org
2008-08-18 16:10 ` burnus at gcc dot gnu dot org
2008-08-19 10:55 ` jv244 at cam dot ac dot uk
2008-08-19 11:37 ` jv244 at cam dot ac dot uk
2008-08-19 13:51 ` jv244 at cam dot ac dot uk
2008-08-24 22:50 ` [Bug middle-end/37150] vectorizer misses some loops pinskia at gcc dot gnu dot org
2008-12-27  6:33 ` pinskia at gcc dot gnu dot org
2009-08-06  7:55 ` jv244 at cam dot ac dot uk
2009-08-06  9:40 ` rguenth at gcc dot gnu dot org
2009-08-06 10:24 ` jv244 at cam dot ac dot uk
2009-08-06 10:49 ` irar at il dot ibm dot com [this message]
2009-08-06 11:11 ` jv244 at cam dot ac dot uk
     [not found] <bug-37150-4@http.gcc.gnu.org/bugzilla/>
2012-07-13  8:44 ` rguenth at gcc dot gnu.org
2012-10-06 10:39 ` Joost.VandeVondele at mat dot ethz.ch

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