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From: "darkshikari at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/43827] Intrinsic possibility: does not alias global data
Date: Wed, 21 Apr 2010 22:07:00 -0000 [thread overview]
Message-ID: <20100421220717.6721.qmail@sourceware.org> (raw)
In-Reply-To: <bug-43827-19067@http.gcc.gnu.org/bugzilla/>
------- Comment #2 from darkshikari at gmail dot com 2010-04-21 22:07 -------
Here's what the compiler currently says about one of these calls using "-flto
-fipa-pta -fwhole-program -fdump-tree-optimized-alias -O3 -fomit-frame-pointer
-ffastmath":
# PT = nonlocal unit-escaped
D.9637_762 = h_79(D)->mc.mc_luma;
# PT = nonlocal unit-escaped
D.9343_763 = m_61(D)->weight;
bmy_764 = bmy_20 + 1;
D.9344_765 = m_61(D)->i_stride[0];
# USE = anything
# CLB = anything
D.9637_762 (&pix[16], 64, D.9345_761, D.9344_765, bmx_5, bmy_764, bw_63, bh_65,
D.9343_763);
After the linking step, using LTO:
# PT = anything
D.54843_762 = h_79(D)->mc.mc_luma;
# PT = anything
D.55040_763 = m_61(D)->weight;
bmy_764 = bmy_20 + 1;
D.55039_765 = m_61(D)->i_stride[0];
# USE = anything
# CLB = anything
D.54843_762 (&pix[16], 64, D.55038_761, D.55039_765, bmx_5, bmy_764, bw_63,
bh_65, D.55040_763);
If I'm reading this right, it doesn't seem it's able to infer anything
whatsoever about it.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43827
next prev parent reply other threads:[~2010-04-21 22:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-21 3:40 [Bug c/43827] New: " darkshikari at gmail dot com
2010-04-21 9:30 ` [Bug c/43827] " rguenth at gcc dot gnu dot org
2010-04-21 22:07 ` darkshikari at gmail dot com [this message]
2010-04-21 22:09 ` pinskia at gcc dot gnu dot org
2010-04-21 22:14 ` [Bug tree-optimization/43827] " rguenth at gcc dot gnu dot org
2010-04-21 22:25 ` [Bug c/43827] " darkshikari at gmail dot com
2010-04-22 6:31 ` darkshikari at gmail dot com
[not found] <bug-43827-4@http.gcc.gnu.org/bugzilla/>
2015-03-17 6:54 ` mpolacek at gcc dot gnu.org
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