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Commit Graph

50 Commits

Author SHA1 Message Date
Jan Wen Voung
74d9647d18 Revert the test moves from 176733. Use "REQUIRES: asserts" instead.
llvm-svn: 176873
2013-03-12 16:27:52 +00:00
Jan Wen Voung
2346df4d41 Disable statistics on Release builds and move tests that depend on -stats.
Summary:
Statistics are still available in Release+Asserts (any +Asserts builds),
and stats can also be turned on with LLVM_ENABLE_STATS.

Move some of the FastISel stats that were moved under DEBUG()
back out of DEBUG(), since stats are disabled across the board now.

Many tests depend on grepping "-stats" output.  Move those into
a orig_dir/Stats/. so that they can be marked as unsupported
when building without statistics.

Differential Revision: http://llvm-reviews.chandlerc.com/D486

llvm-svn: 176733
2013-03-08 22:56:31 +00:00
James Molloy
de926c367f Add a new attribute, 'noduplicate'. If a function contains a noduplicate call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call.
Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage).

llvm-svn: 170704
2012-12-20 16:04:27 +00:00
Hal Finkel
2392da9d83 getSmallConstantTripMultiple should never return zero.
When the trip count is -1, getSmallConstantTripMultiple could return zero,
and this would cause runtime loop unrolling to assert. Instead of returning
zero, one is now returned (consistent with the existing overflow cases).
Fixes PR14167.

llvm-svn: 166612
2012-10-24 19:46:44 +00:00
Benjamin Kramer
50774721dc Fix tests that didn't test anything.
llvm-svn: 164686
2012-09-26 09:51:39 +00:00
Andrew Trick
7230fee696 Fix 12513: Loop unrolling breaks with indirect branches.
Take this opportunity to generalize the indirectbr bailout logic for
loop transformations. CFG transformations will never get indirectbr
right, and there's no point trying.

llvm-svn: 154386
2012-04-10 05:14:42 +00:00
Hongbin Zheng
2a8f0cf400 Add testcase for r154007, when a function has the optsize attribute,
the loop should be unrolled according the value of OptSizeUnrollThreshold.

llvm-svn: 154014
2012-04-04 13:24:40 +00:00
Andrew Trick
30b64bcc90 Remove redundant -enable-iv-rewrite=false flags from test cases.
llvm-svn: 153255
2012-03-22 17:09:04 +00:00
Eli Bendersky
4afdeeb682 Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.

llvm-svn: 150664
2012-02-16 06:28:33 +00:00
Andrew Trick
4f0b3bb42b Add -unroll-runtime for unrolling loops with run-time trip counts.
Patch by Brendon Cahoon!

This extends the existing LoopUnroll and LoopUnrollPass. Brendon
measured no regressions in the llvm test suite with -unroll-runtime
enabled. This implementation works by using the existing loop
unrolling code to unroll the loop by a power-of-two (default 8). It
generates an if-then-else sequence of code prior to the loop to
execute the extra iterations before entering the unrolled loop.

llvm-svn: 146245
2011-12-09 06:19:40 +00:00
Andrew Trick
fe5f7fc3b8 Fix a corner case in updating LoopInfo after fully unrolling an outer loop.
The loop tree's inclusive block lists are painful and expensive to
update. (I have no idea why they're inclusive). The design was
supposed to handle this case but the implementation missed it and my
unit tests weren't thorough enough.

Fixes PR11335: loop unroll update.

llvm-svn: 144970
2011-11-18 03:42:41 +00:00
Nick Lewycky
772024a00d Don't try to loop on iterators that are potentially invalidated inside the loop. Fixes PR11361!
llvm-svn: 144454
2011-11-12 03:09:12 +00:00
Andrew Trick
f9b98a3c3e Unit test for r140919, loop unroll heuristics.
llvm-svn: 141049
2011-10-04 00:07:02 +00:00
Andrew Trick
1dfb51c692 Reapply r139759. Disable IV rewriting by default. See PR10916.
llvm-svn: 139842
2011-09-15 20:58:37 +00:00
Andrew Trick
2e22ddc364 [indvars] Revert r139579 until 401.bzip -arch i386 miscompilation is fixed. PR10920.
llvm-svn: 139583
2011-09-13 05:23:49 +00:00
Andrew Trick
2bfa2824c6 Disable IV rewriting by default. See PR10916.
llvm-svn: 139579
2011-09-13 03:23:21 +00:00
Andrew Trick
09cf4287c2 Rename -disable-iv-rewrite to -enable-iv-rewrite=false in preparation for default change.
llvm-svn: 139517
2011-09-12 18:28:44 +00:00
Andrew Trick
f449c87835 Test case update for unroll-scev.
llvm-svn: 139037
2011-09-02 21:21:03 +00:00
Andrew Trick
88877293d1 -unroll-scev flag removal
llvm-svn: 139010
2011-09-02 17:36:14 +00:00
Jakub Staszak
132e24bf28 ConstantVector returns arbitrary value for the wrong index.
This fixes PR10813.

llvm-svn: 139006
2011-09-02 15:43:43 +00:00
Andrew Trick
d251d23191 A slew of unit tests for the recent LoopInfo::updateUnloop feature
checked in at r137276 and r137341.

llvm-svn: 137385
2011-08-11 23:38:09 +00:00
Andrew Trick
5a5a5ebe68 Allow loop unrolling to get known trip counts from ScalarEvolution.
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
Andrew Trick
4a938add93 Invoke SimplifyIndVar when we partially unroll a loop. Fixes PR10534.
llvm-svn: 137203
2011-08-10 04:29:49 +00:00
Andrew Trick
3ed0cd3cb6 Fix the LoopUnroller to handle nontrivial loops and partial unrolling.
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
Chris Lattner
6bf82a073a add a testcase for r125827
llvm-svn: 125831
2011-02-18 05:05:01 +00:00
Cameron Zwarich
9d8ab7d0f7 Rename 'loopsimplify' to 'loop-simplify'.
llvm-svn: 125317
2011-02-10 23:38:10 +00:00
Owen Anderson
db6a08beef Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,
there seems to be a better way to achieve the same effect.

llvm-svn: 113528
2010-09-09 20:02:23 +00:00
Owen Anderson
956afdd1f2 Relax the "don't unroll loops containing calls" rule. Instead, when a loop contains a call, lower the
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
Dan Gohman
9f19d60c14 Teach getSmallConstantTripMultiple about Shl operators.
llvm-svn: 89426
2009-11-20 01:09:34 +00:00
Dan Gohman
205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
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
Dan Gohman
c95df8b6d8 Use opt -S instead of piping bitcode output through llvm-dis.
llvm-svn: 81257
2009-09-08 22:34:10 +00:00
Dan Gohman
8d84372836 Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.

llvm-svn: 81226
2009-09-08 16:50:01 +00:00
Chris Lattner
120540fec6 remove a test that depends on -debug.
llvm-svn: 66937
2009-03-13 20:31:48 +00:00
Matthijs Kooijman
7199907f50 Add -unroll-allow-partial command line option that enabled the loop unroller to
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
Dan Gohman
b9384c5e87 Revert 52645, the loop unroller changes. It caused a regression in 252.eon.
llvm-svn: 52688
2008-06-24 20:44:42 +00:00
Dan Gohman
7f6ee1cd4b Revamp the loop unroller, extending it to correctly update PHI nodes
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
Gabor Greif
807c2df887 sabre brings to my attention that the 'tr' suffix is also obsolete
llvm-svn: 51349
2008-05-20 21:00:03 +00:00
Gabor Greif
d8a4dbb5da 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.
llvm-svn: 51328
2008-05-20 19:52:04 +00:00
Tanya Lattner
52e5896b3f Upgrade tests.
llvm-svn: 48538
2008-03-19 07:28:33 +00:00
Nick Lewycky
cd28ef8950 Be more careful modifying the use_list while also iterating through it.
llvm-svn: 46417
2008-01-27 18:35:00 +00:00
Devang Patel
963e54c2cf If a value is incoming from outside the loop then the value does not need remapping and the value is never tracked through LastValueMap.
llvm-svn: 43728
2007-11-05 19:32:30 +00:00
John Criswell
57e5ed4b5a Convert .cvsignore files
llvm-svn: 37801
2007-06-29 16:35:07 +00:00
Dan Gohman
91cc43a237 Add a testcase for unrolling loops with unknown tripcounts.
llvm-svn: 37238
2007-05-18 19:59:23 +00:00
Chris Lattner
3de1698393 new testcase for PR1385
llvm-svn: 36783
2007-05-05 18:48:52 +00:00
Devang Patel
ca917ef212 Add PR number for reference.
llvm-svn: 36184
2007-04-16 23:52:37 +00:00
Devang Patel
e155e1ef8c New test case.
llvm-svn: 36181
2007-04-16 23:02:22 +00:00
Reid Spencer
df17fa8ef9 For PR1319:
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
Reid Spencer
d1d4897d3f For PR1319:
Upgrade to use new Tcl exec based test harness.

llvm-svn: 36062
2007-04-15 08:30:33 +00:00
Reid Spencer
56b310ae49 Make the llvm-runtest function much more amenable by eliminating all the
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
Reid Spencer
4572ce85b0 Regression is gone, don't try to find it on clean target.
llvm-svn: 33296
2007-01-17 07:59:14 +00:00