0ac904455e
Fix some incorrect logic in DominanceFrontier::splitBlock. Part of
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PR4238.
llvm-svn: 72223
2009-05-21 20:40:30 +00:00
81ea3bb55c
Move dominator info printer into tool/opt/GraphPrinters.cpp
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llvm-svn: 52907
2008-06-30 17:32:58 +00:00
abc6e6ab9f
Add dominator info printer pass.
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llvm-svn: 52829
2008-06-27 16:43:21 +00:00
a9fcf009a3
Dominance Frontier is cfg only pass.
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llvm-svn: 51075
2008-05-13 22:43:21 +00:00
00cab5b9a6
don't print dominators every time it is computed with -debug.
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llvm-svn: 50032
2008-04-21 06:19:02 +00:00
57236b58f7
Major repairs to the post-dominators implementation. Patch from Florian Brandner!
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llvm-svn: 49768
2008-04-16 04:21:16 +00:00
4d638f1a42
These passes preserve CFG.
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This patch fixes Benchmarks/Trimaran/enc-pc1/enc-pc1 failure reported by Grawp-PIC i386 nightly tester
llvm-svn: 48623
2008-03-20 23:27:18 +00:00
80e43fa744
Restore isCFGOnly property of various analysis passes.
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llvm-svn: 48579
2008-03-20 02:25:21 +00:00
718da668ab
PassInfo keep tracks whether a pass is an analysis pass or not.
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llvm-svn: 48554
2008-03-19 21:56:59 +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
9c614117da
Make DomTree and PostDomTree thin wrappers around DomTreeBase, rather than inheriting from it.
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llvm-svn: 43259
2007-10-23 20:58:37 +00:00
84490d44ec
Move splitBlock into DomTreeBase from DomTree.
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llvm-svn: 43059
2007-10-17 02:03:17 +00:00
4187801f85
Template DominatorTreeBase by node type. This is the next major step towards
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having dominator information on MBB's.
llvm-svn: 43036
2007-10-16 19:59:25 +00:00
74529b7d5f
Begin the process of allowing DomTree on MBB's. Step One: template DomTreeNode by making it a typedef of a templated DomTreeNodeBase.
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llvm-svn: 42743
2007-10-08 07:44:39 +00:00
a69f987b66
Fix bug in updating dominance frontier after loop
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unswitch when frontier includes basic blocks that
are not inside loop.
llvm-svn: 42654
2007-10-05 22:29:34 +00:00
8313e75ea7
Completely merge the implementation details of DomTree and PostDomTree.
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Also, add a FIXME for a bug in PostDomTree calculation I noticed while writing this,
llvm-svn: 42593
2007-10-03 21:25:45 +00:00
b60f254975
Factor some code from the DomTree and PostDomTree calculate methods up into
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each one's runOnFunction method.
llvm-svn: 42563
2007-10-03 03:20:17 +00:00
ee73e0b8cb
Convert DFSPass into a templated friend function, in preparation for making it common to DomTree and PostDomTree.
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llvm-svn: 42420
2007-09-27 23:23:00 +00:00
da853a400f
Move DFSPass back down into DominatorTree. I need to figure out what the difference is between it
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and the PostDomTree version first.
llvm-svn: 42250
2007-09-23 22:16:38 +00:00
84c357fc26
Factor the dominator tree calculation details out into DominatorCalculation.h. This
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change is not useful in and of itself, but it lays the groundwork for combining
the dominator and postdominator implementations.
Also, factor a few methods that are common to DominatorTree and PostDominatorTree
into DominatorTreeBase. Again, this will make merging the two calculation methods
simpler in the future.
llvm-svn: 42248
2007-09-23 21:31:44 +00:00
367260c0df
Assert sooner. Fix wordings.
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llvm-svn: 41075
2007-08-14 16:53:52 +00:00
c0fa0c52b3
Add methods to erase basic block entry.
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llvm-svn: 41052
2007-08-13 22:10:29 +00:00
415750e132
Speed up updateDFSNumbers with two observations:
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1. domtree is a tree, not a graph. There is no need to avoid revisiting nodes with a set.
2. the worklist can contain the child iterator pointers so we don't get N^2 rescanning of children.
This speeds up updateDFSNumbers significantly, making it basically free. On the testcase in PR1432,
this speeds up loopsimplify by another 3x, dropping it from the 12th most expensive pass to the to
the 30th. :) It used to be #1 .
llvm-svn: 40923
2007-08-08 06:24:20 +00:00
c63d4c2e4e
reimplement dfs number computation to be significantly faster. This speeds up
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natural loop canonicalization (which does many cfg xforms) by 4.3x, for
example. This also fixes a bug in postdom dfnumber computation.
llvm-svn: 40920
2007-08-08 05:51:24 +00:00
67f1c3335c
1. Random tidiness cleanups
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2. Make domtree printing print dfin/dfout #'s
3. Fix the Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll failure from last night (in DominanceFrontier::splitBlock).
w.r.t. #3 , my patches last night happened to expose the bug, but this
has been broken since Owen's r35839 patch to LoopSimplify. The code
was subsequently moved over from LoopSimplify into Dominators, carrying
the latent bug. Fun stuff.
llvm-svn: 40858
2007-08-06 06:19:47 +00:00
d2eb0c9653
Fix an iterator invalidation bug I induced.
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llvm-svn: 40830
2007-08-05 00:24:30 +00:00
0e8f85f87e
Switch some std::sets to SmallPtrSet. This speeds up
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domtree by 10% and postdomtree by 17%
llvm-svn: 40829
2007-08-05 00:15:57 +00:00
5f5585c432
Switch DomTreeNode::assignDFSNumber from using a std::set to using
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a smallptrset. This speeds up domtree by about 15% and postdomtree by 20%.
llvm-svn: 40828
2007-08-05 00:10:08 +00:00
77e05fe20d
Switch the internal "Info" map from an std::map to a DenseMap. This
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speeds up idom by about 45% and postidom by about 33%.
Some extra precautions must be taken not to invalidate densemap iterators.
llvm-svn: 40827
2007-08-05 00:02:00 +00:00
bd0fe01daf
switch the DomTreeNodes and IDoms maps in idom/postidom to a
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DenseMap instead of an std::map. This speeds up postdomtree
by about 25% and domtree by about 23%. It also speeds up clients,
for example, domfrontier by 11%, mem2reg by 4% and ADCE by 6%.
llvm-svn: 40826
2007-08-04 23:48:07 +00:00
a882328e61
Update dominator info for the middle blocks created while spliting
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exit edge to preserve LCSSA.
Fix dominance frontier update during loop unswitch. This fixes PR 1589, again
llvm-svn: 40737
2007-08-02 15:25:57 +00:00
34890b2f27
Undo previous check-in.
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llvm-svn: 40698
2007-08-01 23:24:50 +00:00
561b0c29a3
Update dominator info for the middle blocks created while spliting
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exit edge to preserve LCSSA.
Fix dominance frontier update during loop unswitch. This fixes PR 1589.
llvm-svn: 40695
2007-08-01 22:23:50 +00:00
381a2a26e9
Fix edge cases in handling basic block split.
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llvm-svn: 40564
2007-07-27 19:13:43 +00:00
c445982764
Remove ETForest.
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llvm-svn: 37765
2007-06-27 20:53:52 +00:00
d5258a23a5
Move code to update dominator information after basic block is split
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from LoopSimplify.cpp to Dominator.cpp
llvm-svn: 37689
2007-06-21 17:23:45 +00:00
149a7616dc
isReachableFromEntry() is not suitable for post dominator.
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llvm-svn: 37562
2007-06-12 17:50:25 +00:00
47419ee142
Remove redundant check.
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llvm-svn: 37561
2007-06-12 17:35:20 +00:00
dcf0c03ff7
Check A dominates B and vise versa first while searching for nearest
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common dominator.
llvm-svn: 37559
2007-06-12 17:17:57 +00:00
a6ff5bf9ba
Break DominatorTree from ETNode.
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Remove unused PostETForest.
llvm-svn: 37551
2007-06-12 00:54:38 +00:00
d324360352
Use SmallPtrSet instaed of std::set
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llvm-svn: 37548
2007-06-12 00:40:51 +00:00
9576fac800
Check immediate dominators first while searching for nearset common dominator.
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Fix 80 col violations.
llvm-svn: 37547
2007-06-12 00:35:38 +00:00
88ea2dbc68
Maintain DFS number in DomTreeNode itself.
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This means now ETNodes are not useful anymore.
llvm-svn: 37546
2007-06-12 00:14:41 +00:00
78b9c68164
Add and use DominatorTreeBase::findNearestCommonDominator().
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llvm-svn: 37545
2007-06-11 23:31:22 +00:00
becc466451
Update LoopSimplify to require and preserve DominatorTree only.
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Now LoopSimplify does not require nor preserve ETForest.
llvm-svn: 37512
2007-06-08 01:50:32 +00:00
46d92cae96
Add instruction level dominates(A,B) interface.
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llvm-svn: 37504
2007-06-07 23:52:40 +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
def2d9790a
Add new dominator tree node into dominator tree node map.
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llvm-svn: 37475
2007-06-06 20:08:11 +00:00
4a7c2830d4
Add FIXMEs.
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llvm-svn: 37417
2007-06-04 17:38:00 +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
Eli Friedman