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llvm-project/llvm/test/Transforms
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Eli Friedman 203eaaf5ba [LoopReroll] Rewrite induction variable rewriting. 
This gets rid of a bunch of weird special cases; instead, just use SCEV
rewriting for everything.  In addition to being simpler, this fixes a
bug where we would use the wrong stride in certain edge cases.

The one bit I'm not quite sure about is the trip count handling,
specifically the FIXME about overflow.  In general, I think we need to
widen the exit condition, but that's probably not profitable if the new
type isn't legal, so we probably need a check somewhere.  That said, I
don't think I'm making the existing problem any worse.

As a followup to this, a bunch of IV-related code in root-finding could
be cleaned up; with SCEV-based rewriting, there isn't any reason to
assume a loop will have exactly one or two PHI nodes.

Differential Revision: https://reviews.llvm.org/D45191

llvm-svn: 335400
 		2018-06-22 22:58:55 +00:00
..
ADCE [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
AddDiscriminators [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
AggressiveInstCombine [AggressiveInstCombine] avoid crashing on unsimplified code (PR37446) 2018-05-14 13:43:32 +00:00
AlignmentFromAssumptions [AlignmentFromAssumptions] Set source and dest alignments of memory intrinsiscs separately 2018-02-22 18:55:59 +00:00
ArgumentPromotion [ArgumentPromotion] don't break musttail invariant PR36543 2018-03-02 00:59:27 +00:00
AtomicExpand
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BDCE [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
BlockExtractor BlockExtractor: Don’t delete functions directly 2018-03-12 22:28:18 +00:00
BranchFolding
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CallSiteSplitting [CallSiteSplit] Make sure we remove nonnull if the parameter turns out to be a constant. 2018-04-23 20:09:08 +00:00
CalledValuePropagation
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CodeExtractor [CodeExtractor] Allow extracting blocks with exception handling 2018-05-11 22:49:49 +00:00
CodeGenPrepare Generalize MergeBlockIntoPredecessor. Replace uses of MergeBasicBlockIntoOnlyPred. 2018-06-20 22:01:04 +00:00
ConstProp Make uitofp and sitofp defined on overflow. 2018-06-14 22:58:48 +00:00
ConstantHoisting [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
ConstantMerge
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Coroutines [Coroutines] PR34897: Fix incorrect elisions 2018-05-11 03:12:28 +00:00
CorrelatedValuePropagation [ValueTracking] Fix endless recursion in isKnownNonZero() 2018-05-30 15:56:46 +00:00
CrossDSOCFI
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DCE [DCE] Salvage debug info from dead insts 2018-02-15 22:26:18 +00:00
DeadArgElim [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
DeadStoreElimination [Debugify] Move debug value intrinsics closer to their operand defs 2018-06-06 19:05:42 +00:00
DivRemPairs
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EarlyCSE [EarlyCSE] Propagate conditions of AND and OR instructions 2018-06-14 13:02:13 +00:00
EliminateAvailableExternally
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EntryExitInstrumenter [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
ExpandMemCmp/X86
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Float2Int
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ForcedFunctionAttrs
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FunctionAttrs [CaptureTracking] Handle capturing of launder.invariant.group 2018-05-05 10:23:27 +00:00
FunctionImport [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
GCOVProfiling [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
GVN [GVN] Avoid casting a vector of size less than 8 bits to i8 2018-06-21 21:43:20 +00:00
GVNHoist [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
GVNSink
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GlobalDCE
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GlobalMerge [GlobalMerge] Set the alignment on merged global structs 2018-06-06 14:48:32 +00:00
GlobalOpt Revert r335324 due to a builtbot failure 2018-06-22 08:57:01 +00:00
GlobalSplit
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GuardWidening [LoopGuardWidening] Make PostDomTree optional 2018-04-27 23:15:56 +00:00
IPConstantProp Revert r335206 "Recommit r333268: [IPSCCP] Use PredicateInfo to propagate facts from cmp instructions." 2018-06-21 19:18:36 +00:00
IRCE [IRCE] Fix miscompile with range checks against negative values 2018-05-19 13:06:37 +00:00
IndVarSimplify [SimplifyIndVars] Eliminate redundant truncs 2018-06-19 04:48:34 +00:00
IndirectBrExpand
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InferAddressSpaces
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InferFunctionAttrs [SimplifyLibcalls] Replace locked IO with unlocked IO 2018-05-16 11:39:52 +00:00
Inline Fix aliasing of launder.invariant.group 2018-05-23 09:16:44 +00:00
InstCombine [InstCombine] add shuffle+binops test from PR37806; NFC 2018-06-22 13:44:42 +00:00
InstMerge [MergedLoadStoreMotion] Fix a debug invariant bug in mergeStores 2018-05-09 06:52:12 +00:00
InstNamer
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InstSimplify [InstSimplify] Fix missed optimization in simplifyUnsignedRangeCheck() 2018-06-20 14:22:49 +00:00
InterleavedAccess
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Internalize
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JumpThreading Fix the issue that ComputeValueKnownInPredecessors only handles the case when 2018-05-01 14:47:24 +00:00
LCSSA [Debugify] Set a DI version module flag for llc compatibility 2018-05-24 23:00:23 +00:00
LICM [MustExecute] Fix a debug invariant issue in isGuaranteedToExecute() 2018-05-25 13:02:59 +00:00
LoadStoreVectorizer [AMDGPU] Re-enabled 128bit wide-vector generation for local addr space by default. 2018-05-28 18:15:11 +00:00
LoopDataPrefetch [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopDeletion
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LoopDistribute [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopIdiom [ValueTracking] Match select abs pattern when there's an sext involved 2018-06-04 16:53:57 +00:00
LoopInstSimplify [LoopInstSimplify] Re-implement the core logic of loop-instsimplify to 2018-05-29 20:15:38 +00:00
LoopInterchange [DA] Enable -da-delinearize by default 2018-06-21 11:53:16 +00:00
LoopLoadElim
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LoopPredication [LoopPredication] Add profitability check based on BPI 2018-03-22 16:03:59 +00:00
LoopReroll [LoopReroll] Rewrite induction variable rewriting. 2018-06-22 22:58:55 +00:00
LoopRotate [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopSimplify [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopSimplifyCFG Generalize MergeBlockIntoPredecessor. Replace uses of MergeBasicBlockIntoOnlyPred. 2018-06-20 22:01:04 +00:00
LoopStrengthReduce Generalize MergeBlockIntoPredecessor. Replace uses of MergeBasicBlockIntoOnlyPred. 2018-06-20 22:01:04 +00:00
LoopUnroll [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LoopUnswitch [LoopUnswitch] Fix SCEV invalidation in unswitching 2018-05-23 10:09:53 +00:00
LoopVectorize [LoopVectorize] regenerate full checks; NFC 2018-06-21 16:54:32 +00:00
LoopVersioning [LoopVersioning] Don't modify the list that we iterate over in addPHINodes 2018-05-22 08:33:02 +00:00
LoopVersioningLICM
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LowerAtomic
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LowerExpectIntrinsic
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LowerGuardIntrinsic
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LowerInvoke
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LowerSwitch
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LowerTypeTests In thin and full LTO + CFI, direct function calls may go through jump table 2018-06-04 18:18:12 +00:00
Mem2Reg Re-apply "[DebugInfo] Check size of variable in ConvertDebugDeclareToDebugValue" 2018-06-15 13:48:55 +00:00
MemCpyOpt [MemCpyOpt] Skip optimizing basic blocks not reachable from entry 2018-04-23 19:55:04 +00:00
MergeFunc [MergeFunctions] Fix merging of small weak functions 2018-05-15 11:31:07 +00:00
MergeICmps [MergeICmps] Don't crash when memcmp is not available 2018-05-19 12:51:59 +00:00
MetaRenamer
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NameAnonGlobals
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NaryReassociate [NaryReassociate] Detect deleted instr with WeakVH 2018-05-24 06:09:02 +00:00
NewGVN [NewGVN] Fix handling of assumes 2018-05-22 17:38:22 +00:00
ObjCARC [ObjCARC] Prevent code motion into a catchswitch 2018-05-16 04:52:18 +00:00
PGOProfile [ICP] Do not attempt type matching for variable length arguments. 2018-04-25 17:19:21 +00:00
PartiallyInlineLibCalls
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PhaseOrdering [PhaseOrdering] remove stale comments; NFC 2018-05-09 23:10:46 +00:00
PlaceSafepoints
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PreISelIntrinsicLowering
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PruneEH [PM][FunctionAttrs] add NoUnwind attribute inference to PostOrderFunctionAttrs pass 2018-03-23 21:46:16 +00:00
Reassociate [Reassociate] Prevent infinite loops when processing PHIs. 2018-05-11 15:45:36 +00:00
Reg2Mem
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RewriteStatepointsForGC [RewriteStatepoints] Fix stale parse points 2018-03-05 22:27:30 +00:00
SCCP Revert r335206 "Recommit r333268: [IPSCCP] Use PredicateInfo to propagate facts from cmp instructions." 2018-06-21 19:18:36 +00:00
SLPVectorizer [SLPVectorizer] Support alternate opcodes in tryToVectorizeList 2018-06-22 16:37:34 +00:00
SROA [SROA] Handle PHI with multiple duplicate predecessors 2018-05-17 07:21:41 +00:00
SafeStack [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
SampleProfile [SampleFDO] Add a new compact binary format for sample profile. 2018-06-11 22:40:43 +00:00
Scalarizer [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
SeparateConstOffsetFromGEP [Split GEP] handle trunc() in separate-const-offset-from-gep pass. 2018-05-11 21:13:19 +00:00
SimpleLoopUnswitch [LegacyPM] Fix PR37888 by teaching the legacy loop pass manager how to 2018-06-22 02:43:41 +00:00
SimplifyCFG Revert "Simplify blockaddress usage before giving up in MergeBlockIntoPredecessor" 2018-06-18 23:20:08 +00:00
Sink
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SpeculateAroundPHIs
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SpeculativeExecution
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StraightLineStrengthReduce
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StripDeadPrototypes
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StripSymbols
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StructurizeCFG StructurizeCFG: Adjust the loop depth for a subregion to order the nodes correctly 2018-05-23 18:34:48 +00:00
SyntheticCountsPropagation
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TailCallElim [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
ThinLTOBitcodeWriter [ThinLTOBitcodeWriter] Emit summaries for regular LTO modules 2018-06-01 15:20:47 +00:00
Util [PredicateInfo] Order instructions in different BBs by DFSNumIn. 2018-06-20 17:42:01 +00:00
WholeProgramDevirt Runtime flag to control branch funnel threshold 2018-04-06 21:32:36 +00:00