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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57949] [powerpc64] Structure parameter alignment issue with vector extensions
Date: Mon, 22 Jul 2013 16:30:00 -0000	[thread overview]
Message-ID: <bug-57949-4-3CtswDNP5D@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-57949-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57949

--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
The wrong code is introduced during expand.  vs.m is computed as

  mem(plus(virtual-incoming-args, 72))

with the pad at offset 80, v[0..1] at offset 88, and v[2..3] at offset 96.  All
are shown as having alignment 8.  vs.m should have been placed at offset 80.

After loading these into virtual regs with DI mode, they are stored at offsets
0, 8, 16, 24 from virtual-stack-vars, which is given an alignment of 128. 
Later the vector is loaded with V4SF mode.


  parent reply	other threads:[~2013-07-22 16:30 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-21 16:30 [Bug target/57949] New: " wschmidt at gcc dot gnu.org
2013-07-22 16:02 ` [Bug target/57949] " wschmidt at gcc dot gnu.org
2013-07-22 16:30 ` wschmidt at gcc dot gnu.org [this message]
2013-07-23 17:24 ` wschmidt at gcc dot gnu.org
2013-07-23 20:29 ` wschmidt at gcc dot gnu.org
2013-07-23 20:40 ` joseph at codesourcery dot com
2013-07-31  2:26 ` wschmidt at gcc dot gnu.org
2013-08-14 20:39 ` wschmidt at gcc dot gnu.org
2013-11-15 23:41 ` uweigand at gcc dot gnu.org
2014-04-04 14:05 ` wschmidt at gcc dot gnu.org

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