d48ab84556
Don't try to loop on iterators that are potentially invalidated inside the loop. Fixes PR11361!
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llvm-svn: 144454
2011-11-12 03:09:12 +00:00
bf51f97c28
Unit test for r140919, loop unroll heuristics.
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llvm-svn: 141049
2011-10-04 00:07:02 +00:00
74111ee07f
Reapply r139759. Disable IV rewriting by default. See PR10916.
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llvm-svn: 139842
2011-09-15 20:58:37 +00:00
f9f68b816b
[indvars] Revert r139579 until 401.bzip -arch i386 miscompilation is fixed. PR10920.
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llvm-svn: 139583
2011-09-13 05:23:49 +00:00
061d811c51
Disable IV rewriting by default. See PR10916.
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llvm-svn: 139579
2011-09-13 03:23:21 +00:00
183013d8d4
Rename -disable-iv-rewrite to -enable-iv-rewrite=false in preparation for default change.
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llvm-svn: 139517
2011-09-12 18:28:44 +00:00
310a448cfe
Test case update for unroll-scev.
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llvm-svn: 139037
2011-09-02 21:21:03 +00:00
4a31ba3bae
-unroll-scev flag removal
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llvm-svn: 139010
2011-09-02 17:36:14 +00:00
057d423e4b
ConstantVector returns arbitrary value for the wrong index.
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This fixes PR10813.
llvm-svn: 139006
2011-09-02 15:43:43 +00:00
2d8494a030
A slew of unit tests for the recent LoopInfo::updateUnloop feature
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checked in at r137276 and r137341.
llvm-svn: 137385
2011-08-11 23:38:09 +00:00
2b6860f0a1
Allow loop unrolling to get known trip counts from ScalarEvolution.
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SCEV unrolling can unroll loops with arbitrary induction variables. It
is a prerequisite for -disable-iv-rewrite performance. It is also
easily handles loops of arbitrary structure including multiple exits
and is generally more robust.
This is under a temporary option to avoid affecting default
behavior for the next couple of weeks. It is needed so that I can
checkin unit tests for updateUnloop.
llvm-svn: 137384
2011-08-11 23:36:16 +00:00
4d0040baf8
Invoke SimplifyIndVar when we partially unroll a loop. Fixes PR10534.
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llvm-svn: 137203
2011-08-10 04:29:49 +00:00
b72bbe2a92
Fix the LoopUnroller to handle nontrivial loops and partial unrolling.
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These are not individual bug fixes. I had to rewrite a good chunk of
the unroller to make it sane. I think it was getting lucky on trivial
completely unrolled loops with no early exits. I included some fairly
simple unit tests for partial unrolling. I didn't do much stress
testing, so it may not be perfect, but should be usable now.
llvm-svn: 137190
2011-08-10 00:28:10 +00:00
6b88c76f13
add a testcase for r125827
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llvm-svn: 125831
2011-02-18 05:05:01 +00:00
d8e66038f4
Rename 'loopsimplify' to 'loop-simplify'.
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llvm-svn: 125317
2011-02-10 23:38:10 +00:00
6270515918
Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,
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there seems to be a better way to achieve the same effect.
llvm-svn: 113528
2010-09-09 20:02:23 +00:00
8084dbaf8e
Relax the "don't unroll loops containing calls" rule. Instead, when a loop contains a call, lower the
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unrolling threshold to the optimize-for-size threshold. Basically, for loops containing calls, unrolling
can still be profitable as long as the loop is REALLY small.
llvm-svn: 113439
2010-09-08 23:10:07 +00:00
62167b9516
Teach getSmallConstantTripMultiple about Shl operators.
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llvm-svn: 89426
2009-11-20 01:09:34 +00:00
1880092722
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
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input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.
llvm-svn: 81537
2009-09-11 18:01:28 +00:00
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
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llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
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of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
2150eb9f6f
remove a test that depends on -debug.
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llvm-svn: 66937
2009-03-13 20:31:48 +00:00
98b5c16e3b
Add -unroll-allow-partial command line option that enabled the loop unroller to
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partially unroll a loop when fully unrolling would not fit under the threshold.
Patch by Mikael Lepistö.
llvm-svn: 54160
2008-07-29 13:21:23 +00:00
04c8bd7e11
Revert 52645, the loop unroller changes. It caused a regression in 252.eon.
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llvm-svn: 52688
2008-06-24 20:44:42 +00:00
48c5c7e860
Revamp the loop unroller, extending it to correctly update PHI nodes
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in the presence of out-of-loop users of in-loop values and the trip
count is not a known multiple of the unroll count, and to be a bit
simpler overall. This fixes PR2253.
llvm-svn: 52645
2008-06-23 21:29:41 +00:00
1e427c3264
sabre brings to my attention that the 'tr' suffix is also obsolete
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llvm-svn: 51349
2008-05-20 21:00:03 +00:00
f45ff35bfe
Rename the last test with .llx extension to .ll, resolve duplicate test by renaming to isnan2. Now that no test has llx ending there is no need to search for them from dg.exp too.
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llvm-svn: 51328
2008-05-20 19:52:04 +00:00
ab7872c06c
Upgrade tests.
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llvm-svn: 48538
2008-03-19 07:28:33 +00:00
efb16f7057
Be more careful modifying the use_list while also iterating through it.
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llvm-svn: 46417
2008-01-27 18:35:00 +00:00
b98d2050a2
If a value is incoming from outside the loop then the value does not need remapping and the value is never tracked through LastValueMap.
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llvm-svn: 43728
2007-11-05 19:32:30 +00:00
2660cef6d7
Convert .cvsignore files
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llvm-svn: 37801
2007-06-29 16:35:07 +00:00
6164a1b279
Add a testcase for unrolling loops with unknown tripcounts.
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llvm-svn: 37238
2007-05-18 19:59:23 +00:00
580d824e5d
new testcase for PR1385
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llvm-svn: 36783
2007-05-05 18:48:52 +00:00
74ede29a27
Add PR number for reference.
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llvm-svn: 36184
2007-04-16 23:52:37 +00:00
369bec184b
New test case.
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llvm-svn: 36181
2007-04-16 23:02:22 +00:00
6e87ec4351
For PR1319:
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Remove && from the end of the lines to prevent tests from throwing run
lines into the background. Also, clean up places where the same command
is run multiple times by using a temporary file.
llvm-svn: 36142
2007-04-16 17:36:08 +00:00
951d8dc29f
For PR1319:
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Upgrade to use new Tcl exec based test harness.
llvm-svn: 36062
2007-04-15 08:30:33 +00:00
d029c7e666
Make the llvm-runtest function much more amenable by eliminating all the
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global variables that needed to be passed in. This makes it possible to
add new global variables with only a couple changes (Makefile and llvm-dg.exp)
instead of touching every single dg.exp file.
llvm-svn: 35918
2007-04-11 19:56:59 +00:00
83b3d82672
Regression is gone, don't try to find it on clean target.
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llvm-svn: 33296
2007-01-17 07:59:14 +00:00
Nick Lewycky