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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/51534] Bad code gen for vcgtq_u32 NEON intrinsic
Date: Wed, 14 Dec 2011 15:01:00 -0000	[thread overview]
Message-ID: <bug-51534-4-QnxWbztrEy@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-51534-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51534

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-12-14
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-12-14 14:36:51 UTC ---
Confirmed.

The VCGT ..., #0 instruction only operates on signed types.  Also applies to
VCLE.


Alternatives for unsigned are:
- load 0 into a register
- convert the comparison to VCEQ then, for GT only, invert the result.


  parent reply	other threads:[~2011-12-14 14:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-13 19:29 [Bug target/51534] New: " rmansfield at qnx dot com
2011-12-13 19:53 ` [Bug target/51534] " rmansfield at qnx dot com
2011-12-14 15:01 ` rearnsha at gcc dot gnu.org [this message]
2012-02-28 16:15 ` mgretton at gcc dot gnu.org
2012-02-28 16:19 ` mgretton at gcc dot gnu.org
2014-08-10 16:46 ` rmansfield at qnx dot com
2023-03-03 19:10 ` cvs-commit at gcc dot gnu.org

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