Roman Lebedev 8d081b78e4 SCEVExpander::expandAddRecExprLiterally(): check before casting as Instruction ... Summary: An alternative to D48597. Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=37936 | PR37936 ]]. The problem is as follows: 1. `indvars` marks `%dec` as `NUW`. 2. `loop-instsimplify` runs `instsimplify`, which constant-folds `%dec` to -1 (D47908) 3. `loop-reduce` tries to do some further modification, but crashes with an type assertion in cast, because `%dec` is no longer an `Instruction`, If the runline is split into two, i.e. you first run `-indvars -loop-instsimplify`, store that into a file, and then run `-loop-reduce`, there is no crash. So it looks like the problem is due to `-loop-instsimplify` not discarding SCEV. But in this case we can just not crash if it's not an `Instruction`. This is just a local fix, unlike D48597, so there may very well be other problems. Reviewers: mkazantsev, uabelho, sanjoy, silviu.baranga, wmi Reviewed By: mkazantsev Subscribers: evstupac, javed.absar, spatel, llvm-commits Differential Revision: https://reviews.llvm.org/D48599 llvm-svn: 335950		2018-06-29 07:44:20 +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	…
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	…
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	…
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	…
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	…
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	…
EarlyCSE	[EarlyCSE] Propagate conditions of AND and OR instructions	2018-06-14 13:02:13 +00:00
EliminateAvailableExternally	…
EntryExitInstrumenter	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
ExpandMemCmp/X86	…
Float2Int	…
ForcedFunctionAttrs	…
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	…
GlobalDCE	…
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	…
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	[IndVarSimplify] Ignore unreachable users of truncs	2018-06-28 08:20:03 +00:00
IndirectBrExpand	…
InferAddressSpaces	[AMDGPU] Switch to the new addr space mapping by default	2018-02-02 16:07:16 +00:00
InferFunctionAttrs	[SimplifyLibcalls] Replace locked IO with unlocked IO	2018-05-16 11:39:52 +00:00
Inline	[ThinLTO] Port InlinerFunctionImportStats handling to new PM	2018-06-28 20:07:47 +00:00
InstCombine	[InstCombine] adjust shuffle tests; NFC	2018-06-28 21:14:02 +00:00
InstMerge	[MergedLoadStoreMotion] Fix a debug invariant bug in mergeStores	2018-05-09 06:52:12 +00:00
InstNamer	…
InstSimplify	[InstSimplify] fold shifts by sext bool	2018-06-26 17:31:38 +00:00
InterleavedAccess	…
Internalize	…
JumpThreading	[JumpThreading] Don't try to rewrite a use if it's already valid.	2018-06-26 22:19:48 +00:00
LCSSA	[Debugify] Set a DI version module flag for llc compatibility	2018-05-24 23:00:23 +00:00
LICM	Fix invariant fdiv hoisting in LICM	2018-06-23 04:01:28 +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	…
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	…
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	SCEVExpander::expandAddRecExprLiterally(): check before casting as Instruction	2018-06-29 07:44:20 +00:00
LoopUnroll	LoopUnroll: Allow analyzing intrinsic call costs	2018-06-26 18:51:17 +00:00
LoopUnswitch	[LoopUnswitch] Fix SCEV invalidation in unswitching	2018-05-23 10:09:53 +00:00
LoopVectorize	[AArch64] Add custom lowering for v4i8 trunc store	2018-06-27 13:58:46 +00:00
LoopVersioning	[LoopVersioning] Don't modify the list that we iterate over in addPHINodes	2018-05-22 08:33:02 +00:00
LoopVersioningLICM	…
LowerAtomic	…
LowerExpectIntrinsic	…
LowerGuardIntrinsic	…
LowerInvoke	…
LowerSwitch	…
LowerTypeTests	In thin and full LTO + CFI, direct function calls may go through jump table	2018-06-04 18:18:12 +00:00
Mem2Reg	Improve ConvertDebugDeclareToDebugValue	2018-06-26 06:17:00 +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	…
NameAnonGlobals	…
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	…
PhaseOrdering	[PhaseOrdering] remove stale comments; NFC	2018-05-09 23:10:46 +00:00
PlaceSafepoints	…
PreISelIntrinsicLowering	…
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	…
RewriteStatepointsForGC	[RewriteStatepoints] Fix stale parse points	2018-03-05 22:27:30 +00:00
SCCP	[SCCP] Mark CFG as preserved.	2018-06-28 09:53:38 +00:00
SLPVectorizer	[SLPVectorizer] Recognise non uniform power of 2 constants	2018-06-26 16:20:16 +00:00
SROA	[SROA] Preserve DebugLoc when rewriting alloca partitions	2018-06-28 18:58:30 +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	[PM/LoopUnswitch] Teach the new unswitch to handle nontrivial	2018-06-25 23:32:54 +00:00
SimplifyCFG	Revert "Simplify blockaddress usage before giving up in MergeBlockIntoPredecessor"	2018-06-18 23:20:08 +00:00
Sink	…
SpeculateAroundPHIs	…
SpeculativeExecution	…
StraightLineStrengthReduce	…
StripDeadPrototypes	…
StripSymbols	…
StructurizeCFG	StructurizeCFG: Adjust the loop depth for a subregion to order the nodes correctly	2018-05-23 18:34:48 +00:00
SyntheticCountsPropagation	…
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