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From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/45739] static evaluation of SSE intrinsics (pxor)
Date: Tue, 21 Sep 2010 12:24:00 -0000	[thread overview]
Message-ID: <20100921122334.14566.qmail@sourceware.org> (raw)
In-Reply-To: <bug-45739-17603@http.gcc.gnu.org/bugzilla/>



------- Comment #2 from jakub at gcc dot gnu dot org  2010-09-21 12:23 -------
Created an attachment (id=21856)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21856&action=view)
gcc46-pr45739.patch

Fix.  For further optimizations (like vector A | ~0, A | ~A, A ^ ~0, A & ~0), I
guess we'd need something like CONST_ALL_ONES_RTX (mode) and sharing that in
const_tiny_rtx.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45739


  parent reply	other threads:[~2010-09-21 12:24 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-21 10:13 [Bug middle-end/45739] New: [missed optimization] " kretz at kde dot org
2010-09-21 10:25 ` [Bug target/45739] " rguenth at gcc dot gnu dot org
2010-09-21 11:27 ` jakub at gcc dot gnu dot org
2010-09-21 12:24 ` jakub at gcc dot gnu dot org [this message]
2010-09-21 23:33 ` [Bug rtl-optimization/45739] " jakub at gcc dot gnu dot org
2010-09-22  0:06 ` jakub at gcc dot gnu dot org
2010-09-22  2:57 ` howarth at nitro dot med dot uc dot edu
2010-09-22  3:11 ` howarth at nitro dot med dot uc dot edu
2010-09-22  8:58 ` jakub at gcc dot gnu dot org

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