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path: root/include/llvm/Transforms/Utils/BasicBlockUtils.h
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* Assing line number info to new PHIs created by SSA updater.Devang Patel2011-04-291-0/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130551 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply r124518 with fix. Watch out for invalidated iterator.Evan Cheng2011-01-291-2/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124526 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r124518. It broke Linux self-host.Evan Cheng2011-01-291-11/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124522 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit r124462 with fixes. Tail recursion elim will now dup ret into ↵Evan Cheng2011-01-291-2/+11
| | | | | | unconditional predecessor to enable TCE on demand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124518 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix FoldSingleEntryPHINodes to update memdep and AA when it deletesChris Lattner2011-01-111-2/+2
| | | | | | | | | | | phi nodes. It is called from MergeBlockIntoPredecessor which is called from GVN, which claims to preserve these. I'm skeptical that this is the actual problem behind PR8954, but this is a stab in the right direction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123222 91177308-0d34-0410-b5e6-96231b3b80d8
* remove the dead (and terrible) llvm::RemoveSuccessor function.Chris Lattner2010-12-141-9/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121753 91177308-0d34-0410-b5e6-96231b3b80d8
* Move FindAvailableLoadedValue isSafeToLoadUnconditionally out ofDan Gohman2010-05-281-18/+0
| | | | | | | | lib/Transforms/Utils and into lib/Analysis so that Analysis passes can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename SuccessorNumber to GetSuccessorNumber.Bob Wilson2010-02-161-4/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96387 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor to share code to find the position of a basic block successor in theBob Wilson2010-02-161-0/+5
| | | | | | | terminator's list of successors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96377 91177308-0d34-0410-b5e6-96231b3b80d8
* Make RecursivelyDeleteTriviallyDeadInstructions,Dan Gohman2010-01-051-2/+3
| | | | | | | | RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag indicating whether they made any changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead debug info intrinsics.Devang Patel2010-01-051-5/+0
| | | | | | | | | | | | Intrinsic::dbg_stoppoint Intrinsic::dbg_region_start Intrinsic::dbg_region_end Intrinsic::dbg_func_start AutoUpgrade simply ignores these intrinsics now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92557 91177308-0d34-0410-b5e6-96231b3b80d8
* Improve the other instance of the comment.Duncan Sands2009-11-011-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85733 91177308-0d34-0410-b5e6-96231b3b80d8
* update the comment above llvm::SplitCriticalEdge, and makeChris Lattner2009-10-311-3/+9
| | | | | | | it abort on IndirectBrInst as describe in the comment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85688 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r85667. LoopUnroll currently can't call utility functions whichDan Gohman2009-10-311-5/+3
| | | | | | | | auto-update the DominatorTree because it doesn't keep the DominatorTree current while it works. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85670 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge the enhancements from LoopUnroll's FoldBlockIntoPredecessor intoDan Gohman2009-10-311-3/+5
| | | | | | | | MergeBlockIntoPredecessor. This makes SimplifyCFG slightly more aggressive, and makes it unnecessary for LoopUnroll to have its own copy of this code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85667 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply r80926, with fixes: keep the domtree informed of new blocksDan Gohman2009-09-081-8/+13
| | | | | | | | | | | | | | | | that get created during loop unswitching, and fix SplitBlockPredecessors' LCSSA updating code to create new PHIs instead of trying to just move existing ones. Also, optimize Loop::verifyLoop, since it gets called a lot. Use searches on a sorted list of blocks instead of calling the "contains" function, as is done in other places in the Loop class, since "contains" does a linear search. Also, don't call verifyLoop from LoopSimplify or LCSSA, as the PassManager is already calling verifyLoop as part of LoopInfo's verifyAnalysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81221 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r80926. It causes loop unswitch assertion and slow down some JIT ↵Evan Cheng2009-09-061-13/+8
| | | | | | tests significantly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81101 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a verifyAnalysis to LoopInfo, LoopSimplify, and LCSSA form that verifyDan Gohman2009-09-031-8/+13
| | | | | | | | | | that these passes are properly preserved. Fix several transformation passes that claimed to preserve LoopSimplify form but weren't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80926 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply 70645, converting ScalarEvolution to useDan Gohman2009-05-041-4/+2
| | | | | | | | | | | | | CallbackVH, with fixes. allUsesReplacedWith need to walk the def-use chains and invalidate all users of a value that is replaced. SCEVs of users need to be recalcualted even if the new value is equivalent. Also, make forgetLoopPHIs walk def-use chains, since any SCEV that depends on a PHI should be recalculated when more information about that PHI becomes available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70927 91177308-0d34-0410-b5e6-96231b3b80d8
* Restore minor deletion.Mike Stump2009-05-041-1/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70892 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r70645 for now; it's causing a variety of regressions.Dan Gohman2009-05-031-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70661 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert ScalarEvolution to use CallbackVH for its internal map. ThisDan Gohman2009-05-021-4/+2
| | | | | | | | | | makes ScalarEvolution::deleteValueFromRecords, and it's code that subtly needed to be called before ReplaceAllUsesWith, unnecessary. It also makes ValueDeletionListener unnecessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70645 91177308-0d34-0410-b5e6-96231b3b80d8
* Previously, RecursivelyDeleteDeadInstructions provided an optionDan Gohman2009-05-021-2/+9
| | | | | | | | | | | | | | | | | | | of returning a list of pointers to Values that are deleted. This was unsafe, because the pointers in the list are, by nature of what RecursivelyDeleteDeadInstructions does, always dangling. Replace this with a simple callback mechanism. This may eventually be removed if all clients can reasonably be expected to use CallbackVH. Use this to factor out the dead-phi-cycle-elimination code from LSR utility function, and generalize it to use the RecursivelyDeleteTriviallyDeadInstructions utility function. This makes LSR more aggressive about eliminating dead PHI cycles; adjust tests to either be less trivial or to simply expect fewer instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70636 91177308-0d34-0410-b5e6-96231b3b80d8
* When sinking an insn in InstCombine bring its debugDale Johannesen2009-03-031-0/+5
| | | | | | | | | | info with it. Don't count debug info insns against the scan maximum in FindAvailableLoadedValue (lest they affect codegen). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65910 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor some code into a new FoldSingleEntryPHINodes method.Chris Lattner2008-12-031-0/+8
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* fix a really incorrect comment.Chris Lattner2008-12-031-2/+2
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* Rename DeleteBlockIfDead to DeleteDeadBlock and make it Chris Lattner2008-12-031-4/+3
| | | | | | | | unconditionally delete the block. All likely clients will do the checking anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60464 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor some code out of SimplifyCFG, forming a new Chris Lattner2008-12-031-0/+5
| | | | | | | DeleteBlockIfDead method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60463 91177308-0d34-0410-b5e6-96231b3b80d8
* move FindAvailableLoadedValue from JumpThreading to Transforms/Utils.Chris Lattner2008-11-271-0/+20
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* Make MergeBlockIntoPredecessor more aggressive when the same successor appearsOwen Anderson2008-07-171-1/+1
| | | | | | | more than once. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53731 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor MergeBlockIntoPredecessor out into BasicBlockUtils.Owen Anderson2008-07-171-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53705 91177308-0d34-0410-b5e6-96231b3b80d8
* Move SplitBlockPredecessors out of loopsimplify into BasicBlockUtils.hChris Lattner2008-04-211-0/+13
| | | | | | | | | | as a global helper function. At the same type, switch it from taking a vector of predecessors to an arbitrary sequential input. This allows us to switch LoopSimplify to use a SmallVector for various temporary vectors that it passed into SplitBlockPredecessors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50020 91177308-0d34-0410-b5e6-96231b3b80d8
* prune #includes, fit in 80 cols.Chris Lattner2008-02-251-3/+5
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* Don't attribute in file headers anymore. See llvmdev for theChris Lattner2007-12-291-2/+2
| | | | | | | | discussion of this change. Boy are my fingers tired. ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
* Add SplitEdge and SplitBlock utility routines. Devang Patel2007-07-061-0/+11
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* Do not preserve ETForest.Devang Patel2007-06-081-9/+9
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* Completely purge DomSet. This is the (hopefully) final patch for PR1171.Owen Anderson2007-04-071-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35731 91177308-0d34-0410-b5e6-96231b3b80d8
* add option to isCriticalEdgeChris Lattner2006-10-281-1/+2
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* Expose a smarter way to break critical edges.Chris Lattner2006-10-281-4/+11
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* This is a proper fix for the compiler warning. A termination condition isChris Lattner2006-05-141-3/+11
| | | | | | | not needed, as it can never be reached: an edge must exist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28282 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an infinite loop bug that Vladimir Prus identified.Reid Spencer2006-05-131-1/+2
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* Remove a level of indirection.Chris Lattner2006-02-101-9/+8
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* add a helperChris Lattner2005-08-171-0/+7
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* Remove trailing whitespaceMisha Brukman2005-04-211-2/+2
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* Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke2003-11-111-1/+4
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* Include forms of SplitCriticalEdge which work correctly with pred/succ iteratorsChris Lattner2003-11-101-0/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9856 91177308-0d34-0410-b5e6-96231b3b80d8
* Move isCriticalEdge & SplitCritical into this file. While we're at it, changeChris Lattner2003-11-101-0/+16
| | | | | | | | the interface to SplitCriticalEdge so that it splits an edge if it is critical, otherwise just returns false and noops if not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9852 91177308-0d34-0410-b5e6-96231b3b80d8
* Added LLVM copyright header (for lack of a better term).John Criswell2003-10-201-0/+7
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* Standardize header file commentsChris Lattner2003-09-301-1/+1
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* Implement a new RemoveSuccessor functionChris Lattner2002-07-291-4/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3130 91177308-0d34-0410-b5e6-96231b3b80d8
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