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* Do not use typeinfo to identify pass in pass manager.Devang Patel2007-05-011-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid recursion.Devang Patel2007-04-201-6/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36272 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove ImmediateDominator analysis. The same information can be obtained ↵Owen Anderson2007-04-151-26/+0
| | | | | | | | | | | from DomTree. A lot of code for constructing ImmediateDominator is now folded into DomTree construction. This is part of the ongoing work for PR217. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36063 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-constify things that don't break the build. Last patch in thisOwen Anderson2007-04-091-2/+4
| | | | | | | series, I promise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35848 91177308-0d34-0410-b5e6-96231b3b80d8
* Unconst-ify stuff that broke the build.Owen Anderson2007-04-091-1/+1
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* Const-ify some parameters, and some cosmetic cleanups. No functionalityOwen Anderson2007-04-091-3/+4
| | | | | | | change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35842 91177308-0d34-0410-b5e6-96231b3b80d8
* Tabs -> SpacesOwen Anderson2007-04-091-36/+36
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* Improve some _slow_ behavior introduced in my patches the last few days.Owen Anderson2007-04-091-42/+42
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35839 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleanup some from my DomSet-removal changes. Add a newOwen Anderson2007-04-091-4/+4
| | | | | | | | isReachableFromEntry test to ETForest to factor a common test out of code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35786 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove DominatorSet usage from LoopSimplify. Patch from Owen Anderson.Nick Lewycky2007-04-081-89/+54
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35757 91177308-0d34-0410-b5e6-96231b3b80d8
* Add DomSet back, and revert the changes to LoopSimplify. Apparently theOwen Anderson2007-04-071-48/+85
| | | | | | | | ETForest updating mechanisms don't work as I thought they did. These changes will be reapplied once the issue is worked out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35741 91177308-0d34-0410-b5e6-96231b3b80d8
* Completely purge DomSet from LoopSimplify. This is part of theOwen Anderson2007-04-071-82/+46
| | | | | | | continuing work on PR1171. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35730 91177308-0d34-0410-b5e6-96231b3b80d8
* Expunge a bunch of uses of DomSet from LoopSimplify. Many more remain.Owen Anderson2007-04-071-3/+2
| | | | | | | This is the beginning of work for PR1171. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35720 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopSimplify::FindPHIToPartitionLoops()Devang Patel2007-03-201-4/+6
| | | | | | | Use ETForest instead of DominatorSet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35221 91177308-0d34-0410-b5e6-96231b3b80d8
* switch more statistics over to STATISTIC, eliminating static ctors. Also,Chris Lattner2006-12-191-5/+4
| | | | | | | delete some dead ones. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32694 91177308-0d34-0410-b5e6-96231b3b80d8
* Detemplatize the Statistic class. The only type it is instantiated withChris Lattner2006-12-061-2/+2
| | | | | | | is 'unsigned'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32279 91177308-0d34-0410-b5e6-96231b3b80d8
* For PR786:Reid Spencer2006-11-021-1/+0
| | | | | | | | | | | Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting fall out by removing unused variables. Remaining warnings have to do with unused functions (I didn't want to delete code without review) and unused variables in generated code. Maintainers should clean up the remaining issues when they see them. All changes pass DejaGnu tests and Olden. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
* Be far more careful when splitting a loop header, either to form a preheaderChris Lattner2006-09-231-1/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | or when splitting loops with a common header into multiple loops. In particular the old code would always insert the preheader before the old loop header. This is disasterous in cases where the loop hasn't been rotated. For example, it can produce code like: .. outside the loop... jmp LBB1_2 #bb13.outer LBB1_1: #bb1 movsd 8(%esp,%esi,8), %xmm1 mulsd (%edi), %xmm1 addsd %xmm0, %xmm1 addl $24, %edi incl %esi jmp LBB1_3 #bb13 LBB1_2: #bb13.outer leal (%edx,%eax,8), %edi pxor %xmm1, %xmm1 xorl %esi, %esi LBB1_3: #bb13 movapd %xmm1, %xmm0 cmpl $4, %esi jl LBB1_1 #bb1 Note that the loop body is actually LBB1_1 + LBB1_3, which means that the loop now contains an uncond branch WITHIN it to jump around the inserted loop header (LBB1_2). Doh. This patch changes the preheader insertion code to insert it in the right spot, producing this code: ... outside the loop, fall into the header ... LBB1_1: #bb13.outer leal (%edx,%eax,8), %esi pxor %xmm0, %xmm0 xorl %edi, %edi jmp LBB1_3 #bb13 LBB1_2: #bb1 movsd 8(%esp,%edi,8), %xmm0 mulsd (%esi), %xmm0 addsd %xmm1, %xmm0 addl $24, %esi incl %edi LBB1_3: #bb13 movapd %xmm0, %xmm1 cmpl $4, %edi jl LBB1_2 #bb1 Totally crazy, no branch in the loop! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30587 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach UpdateDomInfoForRevectoredPreds to handle revectored preds that are notChris Lattner2006-09-231-91/+49
| | | | | | | | | reachable, making it general purpose enough for use by InsertPreheaderForLoop. Eliminate custom dominfo updating code in InsertPreheaderForLoop, using UpdateDomInfoForRevectoredPreds instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30586 91177308-0d34-0410-b5e6-96231b3b80d8
* eliminate RegisterOpt. It does the same thing as RegisterPass.Chris Lattner2006-08-271-1/+1
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* s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|Chris Lattner2006-08-271-1/+1
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* Don't attempt to split subloops out of a loop with a huge number of backedges.Chris Lattner2006-08-121-8/+19
| | | | | | | | | | Not only will this take huge amounts of compile time, the resultant loop nests won't be useful for optimization. This reduces loopsimplify time on Transforms/LoopSimplify/2006-08-11-LoopSimplifyLongTime.ll from ~32s to ~0.4s with a debug build of llvm on a 2.7Ghz G5. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29647 91177308-0d34-0410-b5e6-96231b3b80d8
* Reimplement the loopsimplify code which deletes edges from unreachableChris Lattner2006-08-121-29/+53
| | | | | | | | | | | | | | | | | | | | blocks that target loop blocks. Before, the code was run once per loop, and depended on the number of predecessors each block in the loop had. Unfortunately, scanning preds can be really slow when huge numbers of phis exist or when phis with huge numbers of inputs exist. Now, the code is run once per function and scans successors instead of preds, which is far faster. In addition, the new code is simpler and is goto free, woo. This change speeds up a nasty testcase Duraid provided me from taking hours to taking ~72s with a debug build. The functionality this implements is already tested in the testsuite as Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29644 91177308-0d34-0410-b5e6-96231b3b80d8
* Use hidden visibility to make symbols in an anonymous namespace getChris Lattner2006-06-281-1/+2
| | | | | | | dropped. This shrinks libllvmgcc.dylib another 67K git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28975 91177308-0d34-0410-b5e6-96231b3b80d8
* Canonicalize inner loops before outer loops. Inner loop canonicalizationChris Lattner2006-02-141-4/+5
| | | | | | | | | can provide work for the outer loop to canonicalize. This fixes a case that breaks unswitching. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26189 91177308-0d34-0410-b5e6-96231b3b80d8
* When splitting exit edges to canonicalize loops, make sure to put the newChris Lattner2006-02-141-18/+20
| | | | | | | | | block in the appropriate loop nest. Third time is the charm, right? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26187 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert my last patch. It too breaks stuffChris Lattner2006-02-121-12/+6
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* Fix for my previously reverted patchChris Lattner2006-02-111-6/+12
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* revert my previous change, it exposed other problems.Chris Lattner2006-02-111-1/+1
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* Make this check stricter. Disallow loop exit blocks from being shared byChris Lattner2006-02-111-4/+7
| | | | | | | loops and their subloops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26118 91177308-0d34-0410-b5e6-96231b3b80d8
* remove dead exprChris Lattner2006-02-111-1/+0
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* Teach loopsimplify to update et-forest. Patch contributed by Daniel Berlin!Chris Lattner2006-01-091-0/+19
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* remove dead code. The exit block list is computed on demand, thus does notChris Lattner2005-08-131-15/+0
| | | | | | | need to be updated. This code is a relic from when it did. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22775 91177308-0d34-0410-b5e6-96231b3b80d8
* remove some trickiness that broke yacr2 and some other programs last nightChris Lattner2005-08-101-3/+1
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* Make loop-simplify produce better loops by turning PHI nodes like X = phi [X, Y]Chris Lattner2005-08-101-1/+16
| | | | | | | | into just Y. This often occurs when it seperates loops that have collapsed loop headers. This implements LoopSimplify/phi-node-simplify.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22746 91177308-0d34-0410-b5e6-96231b3b80d8
* This code can handle non-dominating instructionsChris Lattner2005-08-051-1/+1
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* Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization intoNate Begeman2005-08-041-3/+2
| | | | | | | | | BasicBlock's removePredecessor routine. This requires shuffling around the definition and implementation of hasContantValue from Utils.h,cpp into Instructions.h,cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove trailing whitespaceMisha Brukman2005-04-211-22/+22
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* Enhance loopsimplify to preserve alias analysis instead of clobbering it.Chris Lattner2005-03-251-2/+15
| | | | | | | This prevents crashes on some programs when using -ds-aa -licm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20831 91177308-0d34-0410-b5e6-96231b3b80d8
* trivial simplificationChris Lattner2005-03-061-1/+1
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* Adjust to changes in instruction interfaces.Chris Lattner2005-01-291-2/+4
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* hasConstantValue will soon return instructions that don't dominate the PHI node,Chris Lattner2004-10-171-16/+21
| | | | | | | so prepare for this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17095 91177308-0d34-0410-b5e6-96231b3b80d8
* Pull assignment out of for loop conditional in order for this toAlkis Evlogimenos2004-09-281-8/+9
| | | | | | | compile under windows. Patch contributed by Paolo Invernizzi! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16534 91177308-0d34-0410-b5e6-96231b3b80d8
* Prototype these functions more accuratelyChris Lattner2004-09-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16432 91177308-0d34-0410-b5e6-96231b3b80d8
* Changes For Bug 352Reid Spencer2004-09-011-4/+4
| | | | | | | | | Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix #includes of i*.h => Instructions.h as per PR403.Misha Brukman2004-07-291-2/+1
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* Fix PR404 try #2Chris Lattner2004-07-151-8/+8
| | | | | | | | This version takes about 1s longer than the previous one (down to 2.35s), but on the positive side, it actually works :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14856 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert previous patch until I get a bug fixedChris Lattner2004-07-151-12/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14853 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR404: Loop simplify is really slow on 252.eonChris Lattner2004-07-151-12/+12
| | | | | | | | | This eliminates an N*N*logN algorithm from the loop simplify pass, replacing it with a much simpler and faster alternative. In a debug build, this reduces gccas time on eon from 85s to 42s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14851 91177308-0d34-0410-b5e6-96231b3b80d8
* Correct rewriting of exit blocks after my last patchChris Lattner2004-04-181-3/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13048 91177308-0d34-0410-b5e6-96231b3b80d8
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