Evan Cheng
d5aaab210c
Now if-converting all 4 variants of triangles.
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llvm-svn: 37565
2007-06-12 23:54:05 +00:00
Owen Anderson
67084c3848
Fix test/Transforms/GVNPRE/2007-06-12-PhiTranslate.ll
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llvm-svn: 37564
2007-06-12 22:43:57 +00:00
Devang Patel
fbde93ba1f
isReachableFromEntry() is not suitable for post dominator.
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llvm-svn: 37562
2007-06-12 17:50:25 +00:00
Devang Patel
b4e2a776cb
Remove redundant check.
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llvm-svn: 37561
2007-06-12 17:35:20 +00:00
Devang Patel
8c07212a59
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
Owen Anderson
f476df648e
Refactor some code, and fix test/Transforms/GVNPRE/2007-06-12-NoExit.ll by being more careful when using
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post-dominator information.
llvm-svn: 37556
2007-06-12 16:57:50 +00:00
Dale Johannesen
f223789fea
Sink CmpInst's to their uses to reduce register pressure.
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llvm-svn: 37554
2007-06-12 16:50:17 +00:00
Devang Patel
ab4cb51479
Break DominatorTree from ETNode.
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Remove unused PostETForest.
llvm-svn: 37551
2007-06-12 00:54:38 +00:00
Owen Anderson
8fd2a040de
Fix a few more bugs, including an instance of walking in reverse topological rather than topological order. This
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fixes a testcase extracted from llvm-test.
llvm-svn: 37550
2007-06-12 00:50:47 +00:00
Devang Patel
520e92a7f4
Use SmallPtrSet instaed of std::set
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llvm-svn: 37548
2007-06-12 00:40:51 +00:00
Devang Patel
31da507473
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
Devang Patel
73d23a5f70
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
Devang Patel
bc3887310b
Add and use DominatorTreeBase::findNearestCommonDominator().
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llvm-svn: 37545
2007-06-11 23:31:22 +00:00
Lauro Ramos Venancio
c9a156f041
Fix a typo in bswap lowering.
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llvm-svn: 37544
2007-06-11 23:16:16 +00:00
Evan Cheng
d6740b478b
Restructure code to reduce ifcvt compile time cost.
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llvm-svn: 37543
2007-06-11 22:26:22 +00:00
Devang Patel
336e38d425
Simplify.
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llvm-svn: 37542
2007-06-11 21:45:31 +00:00
Devang Patel
8fba00d86d
simplify
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llvm-svn: 37541
2007-06-11 21:25:31 +00:00
Devang Patel
35df53ab56
Simplify. Dominator Tree is required so always available.
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llvm-svn: 37540
2007-06-11 21:18:00 +00:00
Owen Anderson
cdb51c9ac4
Handle functions with multiple exit blocks properly.
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llvm-svn: 37539
2007-06-11 16:25:17 +00:00
Devang Patel
a8e236cab7
Use DominatorTree instead of ETForest.
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llvm-svn: 37538
2007-06-11 15:40:48 +00:00
Reid Spencer
0c11f4ebd8
Fix the build.
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llvm-svn: 37537
2007-06-10 00:19:17 +00:00
Owen Anderson
532366fb7d
Perform PRE of comparison operators.
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llvm-svn: 37536
2007-06-09 18:35:31 +00:00
Chris Lattner
5f85da00bb
fix x86-64 mmx calling convention for real, which passes in integer gprs.
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llvm-svn: 37534
2007-06-09 05:08:10 +00:00
Chris Lattner
e965432273
fix mmx handling bug
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llvm-svn: 37533
2007-06-09 05:01:50 +00:00
Nick Lewycky
e03bd9ddbb
Fix edge case.
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llvm-svn: 37532
2007-06-09 04:20:33 +00:00
Evan Cheng
859dab4bda
Don't change CFG during analysis stage. Do so during ifcvt and invalidate predecessors accordingly.
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llvm-svn: 37531
2007-06-09 01:03:43 +00:00
Owen Anderson
1e60429027
Collect statistics from GVN-PRE.
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llvm-svn: 37530
2007-06-08 22:02:36 +00:00
Evan Cheng
7996fc5d23
Carefully remove extraneous CFG edges after each ifcvt.
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llvm-svn: 37529
2007-06-08 22:01:07 +00:00
Evan Cheng
1a6c0341fd
Add a utility routine to check for unpredicated terminator instruction.
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llvm-svn: 37528
2007-06-08 21:59:56 +00:00
Lauro Ramos Venancio
ec8ae8443a
Define AsmTransCBE for ARM.
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llvm-svn: 37527
2007-06-08 21:06:23 +00:00
Owen Anderson
2cf00c37de
Fix typo in a comment.
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llvm-svn: 37526
2007-06-08 20:57:08 +00:00
Owen Anderson
4621335527
Fix a bug that was causing the elimination phase not to replace values when it should be.
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With this patch, GVN-PRE now correctly optimizes the example from the thesis.
Many thanks to Daniel Berlin for helping me find errors in this.
llvm-svn: 37525
2007-06-08 20:44:02 +00:00
Evan Cheng
515e2537d7
Correct transfer predicate information.
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llvm-svn: 37524
2007-06-08 19:17:12 +00:00
Evan Cheng
49720a7312
Hidden options to help debugging ifcvt issues.
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llvm-svn: 37523
2007-06-08 19:10:51 +00:00
David Greene
6b14050d1e
Factor live variable analysis so it does not do register coalescing
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simultaneously. Move that pass to SimpleRegisterCoalescing.
This makes it easier to implement alternative register allocation and
coalescing strategies while maintaining reuse of the existing live
interval analysis.
llvm-svn: 37520
2007-06-08 17:18:56 +00:00
Evan Cheng
a41764f141
Allow more cmp / bcc to be predicated; clean up triangle ifcvt checking code.
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llvm-svn: 37518
2007-06-08 09:36:04 +00:00
Evan Cheng
4c6df8ba37
Fix ARM condition code subsumission check.
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llvm-svn: 37517
2007-06-08 09:14:47 +00:00
Evan Cheng
8eff719058
tBcc is not a barrier.
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llvm-svn: 37516
2007-06-08 09:13:23 +00:00
Duncan Sands
f31e17574a
Use more realistically sized vectors. Reserve capacity if we know in advance
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how much will be used.
llvm-svn: 37515
2007-06-08 08:59:11 +00:00
Owen Anderson
64daf17aa0
Small bugfix, and const-ify some methods (Thanks, Bill).
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llvm-svn: 37513
2007-06-08 01:52:45 +00:00
Devang Patel
cfb3a761ae
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
Dale Johannesen
74ffb6ffb3
Make throttle a hidden parameter, per review.
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llvm-svn: 37511
2007-06-08 01:08:52 +00:00
Owen Anderson
ccd2616fbb
Add partial redundancy elimination.
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llvm-svn: 37510
2007-06-08 01:03:01 +00:00
Dale Johannesen
0903dd4e52
Throttle tail merging; handling blocks with large numbers of predecessors
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is too slow.
llvm-svn: 37509
2007-06-08 00:34:27 +00:00
Devang Patel
d544f5262e
Use DominatorTree instead of ETForest.
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llvm-svn: 37507
2007-06-08 00:17:13 +00:00
Devang Patel
b5554f450a
Do not preserve ETForest.
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llvm-svn: 37506
2007-06-08 00:02:08 +00:00
Devang Patel
67ede3d635
Use DominatorTree instead of ETForest.
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llvm-svn: 37505
2007-06-07 23:53:38 +00:00
Devang Patel
9772222f41
Add instruction level dominates(A,B) interface.
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llvm-svn: 37504
2007-06-07 23:52:40 +00:00
Evan Cheng
2b9e9abed1
Only remove the edge from entry to false if false block is merged.
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llvm-svn: 37503
2007-06-07 22:31:28 +00:00
Devang Patel
8d261e921f
Do not require ETForest. Now it is unused by LICM.
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llvm-svn: 37502
2007-06-07 22:21:15 +00:00