18991d78fa
Fix newly-introduced 4.3 warnings
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llvm-svn: 47375
2008-02-20 12:07:57 +00:00
f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
b5933bbbd5
Use SmallVector instead of std::vector.
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llvm-svn: 41207
2007-08-21 00:31:24 +00:00
d1fcfcc76c
When one branch of condition is eliminated then head of the other
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branch is not necessary immediate dominators of merge blcok in all cases.
llvm-svn: 41144
2007-08-17 21:59:16 +00:00
c5e340eded
LCSSA preserves dom info.
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llvm-svn: 40604
2007-07-30 20:23:45 +00:00
de5901523c
Now this temp. fix is not required.
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llvm-svn: 40034
2007-07-19 02:22:21 +00:00
3363f4ad96
Return Undef if the block has no dominator. This was required to allow
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llvm-gcc build to succeed. Without this change it fails in libstdc++
compilation. This causes no regressions in dejagnu tests. However,
someone who knows this code better might want to review it.
llvm-svn: 39924
2007-07-16 21:03:44 +00:00
4cd1413f15
Make LCSSA a loop pass.
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llvm-svn: 39844
2007-07-13 23:57:11 +00:00
af41e4a192
Maintain ETNode as part of DomTreeNode.
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This adds redundancy for now.
llvm-svn: 37492
2007-06-07 17:47:21 +00:00
bdd1aaef10
s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g
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llvm-svn: 37407
2007-06-04 00:32:22 +00:00
0e8aa7b69a
s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g
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llvm-svn: 37403
2007-06-03 06:26:14 +00:00
b5650ebd6a
Fix typos.
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llvm-svn: 36994
2007-05-11 21:10:54 +00:00
e7da2d6ac3
Fix typo in comment.
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llvm-svn: 36873
2007-05-06 13:37:16 +00:00
8c78a0bff0
Drop 'const'
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llvm-svn: 36662
2007-05-03 01:11:54 +00:00
e95c6ad802
Use 'static const char' instead of 'static const int'.
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Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.
llvm-svn: 36652
2007-05-02 21:39:20 +00:00
09f162ca6a
Do not use typeinfo to identify pass in pass manager.
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llvm-svn: 36632
2007-05-01 21:15:47 +00:00
db9b65d67a
Revert Owen's last check-in. This is breaking Mac OS X / PPC llvm-gcc bootstrap.
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llvm-svn: 36258
2007-04-18 22:39:00 +00:00
f38f2f2394
Use ETForest instead of DominatorTree.
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llvm-svn: 36247
2007-04-18 04:39:32 +00:00
a6b5660209
avoid copying sets and vectors around.
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llvm-svn: 36017
2007-04-14 22:10:17 +00:00
557ab15e71
Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in
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the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.
llvm-svn: 33939
2007-02-05 23:32:05 +00:00
a1d35926b7
For PR1177:
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Revert last patch which caused iteration invalidation.
llvm-svn: 33901
2007-02-05 05:23:32 +00:00
f6fa108993
Use DenseMap for pointer->pointer maps.
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llvm-svn: 33897
2007-02-05 02:39:47 +00:00
45f966d80f
switch more statistics over to STATISTIC, eliminating static ctors. Also,
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delete some dead ones.
llvm-svn: 32694
2006-12-19 22:17:40 +00:00
700b873130
Detemplatize the Statistic class. The only type it is instantiated with
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is 'unsigned'.
llvm-svn: 32279
2006-12-06 17:46:33 +00:00
984d6e1669
generalize the fix for PR977 to also fix
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Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll
llvm-svn: 31317
2006-10-31 18:56:48 +00:00
eb68f080ef
Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll
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llvm-svn: 31315
2006-10-31 17:52:18 +00:00
c2d3d3112e
eliminate RegisterOpt. It does the same thing as RegisterPass.
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llvm-svn: 29925
2006-08-27 22:42:52 +00:00
38b6e8382a
Add special check to avoid isLoop call. Simple, but doesn't seem to speed
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up lcssa much in practice.
llvm-svn: 29465
2006-08-02 00:16:47 +00:00
5a2bc786be
Replace the SSA update code in LCSSA with a bottom-up approach instead of a top
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down approach, inspired by discussions with Tanya.
This approach is significantly faster, because it does not need dominator
frontiers and it does not insert extraneous unused PHI nodes. For example, on
252.eon, in a release-asserts build, this speeds up LCSSA (which is the slowest
pass in gccas) from 9.14s to 0.74s on my G5. This code is also slightly smaller
and significantly simpler than the old code.
Amusingly, in a normal Release build (which includes the
"assert(L->isLCSSAForm());" assertion), asserting that the result of LCSSA
is in LCSSA form is actually slower than the LCSSA transformation pass
itself on 252.eon. I will see if Loop::isLCSSAForm can be sped up next.
llvm-svn: 29463
2006-08-02 00:06:09 +00:00
fe6e97d275
Fix typo in the comment.
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llvm-svn: 29078
2006-07-09 21:35:40 +00:00
aecaabb6e1
Add a fix for an issue where LCSSA would fail to insert undef's in some corner
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cases. Ideally, this issue will go away in the future as LCSSA gets smarter
about which Phi nodes it inserts.
llvm-svn: 29076
2006-07-09 08:14:06 +00:00
e3abb14503
Use the PotDoms map to memoize 'dominating value' lookup. With this patch,
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LCSSA is still the slowest pass when gccas'ing 252.eon, but now it only takes
39s instead of 289s. :)
llvm-svn: 28776
2006-06-14 01:13:57 +00:00
e714a5c549
Fix another instance where PHI nodes need special treatment.
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llvm-svn: 28774
2006-06-13 20:50:09 +00:00
3f8ff0449a
Fix a bug that was causing major slowdowns in povray. This was due to LCSSA
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not handling PHI nodes correctly when determining if a value was live-out.
This patch reduces the number of detected live-out variables in the testcase
from 6565 to 485.
llvm-svn: 28771
2006-06-13 19:37:18 +00:00
0ac336965e
Fix for 2006-06-26-MultipleExitsSingleBlock.
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If a single exit block has multiple predecessors within the loop, it will
appear in the exit blocks list more than once. LCSSA needs to take that into
account so that it doesn't double process that exit block.
llvm-svn: 28750
2006-06-12 07:10:16 +00:00
b538f14d2a
Re-commit the safe parts of my 6/9 patch. Still working on fixing the unsafe parts.
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llvm-svn: 28748
2006-06-11 19:22:28 +00:00
1b6e310e6f
Back out Owen's 6/9 changes. They broke MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others).
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llvm-svn: 28747
2006-06-11 09:32:57 +00:00
505adff3f0
Make Loop able to verify that it is in LCSSA-form, and have the LCSSA pass assert
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on this.
llvm-svn: 28738
2006-06-09 18:33:30 +00:00
5d029264ec
Update some comments, and expose LCSSAID in preparation for having other passes
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require LCSSA.
llvm-svn: 28734
2006-06-08 20:02:53 +00:00
ac601b4c4b
Fix some formatting, and use inLoop() when appropriate.
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llvm-svn: 28694
2006-06-06 04:36:36 +00:00
9e81c1bb03
Stop a memory leak, and update some comments.
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llvm-svn: 28693
2006-06-06 04:28:30 +00:00
766f90b08e
Some more clean-up, and squash an IDF-Phi related bug.
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llvm-svn: 28680
2006-06-04 00:55:19 +00:00
eb33815f1b
Various clean-ups suggested by Chris.
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llvm-svn: 28678
2006-06-04 00:02:23 +00:00
d00eacc4f9
Fix a bug in Phi-noded insertion. Also, update some comments to reflect what's
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actually going on.
llvm-svn: 28677
2006-06-03 23:22:50 +00:00
619e4ba57f
Remove a FIXME that was fixed with my last patch.
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llvm-svn: 28619
2006-06-01 06:07:40 +00:00
cd76fa04a1
More cleanups. Also, add a special case for updating PHI nodes, and
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reimplement getValueDominatingFunction to walk the DominanceTree rather than
just searching blindly.
llvm-svn: 28618
2006-06-01 06:05:47 +00:00
dad8c57340
Extract a huge loop into a helper method. Fix a few iterator-invalidation bugs.
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llvm-svn: 28599
2006-05-31 20:55:06 +00:00
8a8f278f15
Add Use replacement. Assuming there is nothing horribly wrong with this, LCSSA
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is now theoretically feature-complete. It has not, however, been thoroughly
test, and is still considered experimental.
llvm-svn: 28529
2006-05-29 01:00:00 +00:00
152d063ccb
Major think-o. Iterate over all live out-of-loop values, and perform the
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other calculations on each individually, rather than trying to delay it and do
them all at the end.
llvm-svn: 28527
2006-05-28 19:33:28 +00:00
1310e42803
Make LCSSA insert proper Phi nodes throughout the rest of the CFG by computing
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the iterated Dominance Frontier of the loop-closure Phi's. This is the
second phase of the LCSSA pass. The third phase (coming soon) will be to
update all uses of loop variables to use the loop-closure Phi's instead.
llvm-svn: 28524
2006-05-27 18:47:11 +00:00
b4e16996f1
A few small clean-ups, and the addition of an LCSSA statistic.
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llvm-svn: 28512
2006-05-27 00:31:37 +00:00
6e047ab8fc
Fix a copy-and-paste-o that would break some compilers.
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llvm-svn: 28507
2006-05-26 21:19:17 +00:00
f3dd3e2bfd
Clean up and refactor LCSSA a bunch. It should also run faster now, though
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there's still a lot of work to be done on it.
llvm-svn: 28506
2006-05-26 21:11:53 +00:00
8eca8910b6
Skeletal LCSSA pass. This is currently non-functional. Expect functionality
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and documentation updates soo.
llvm-svn: 28495
2006-05-26 13:58:26 +00:00
Anton Korobeynikov