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Amara Emerson a3e702346e [GlobalISel] Fix legalizer artifact combiner from crashing with invalid dead instructions. 
The artifact combiners push instructions which have been marked for deletion
onto an list for the legalizer to deal with on return. However, for trunc(ext)
combines the combiner routine recursively calls itself. When it does this the
dead instructions list may not be empty, and the other combiners don't expect
to be dealing with essentially invalid MIR (multiple vreg defs etc).

This change fixes it by ensuring that the dead instructions are processed on
entry into tryCombineInstruction.

As a result, this fix exposed a few places in tests where G_TRUNC instructions
were not being deleted even though they were dead.

Differential Revision: https://reviews.llvm.org/D59892

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357101 91177308-0d34-0410-b5e6-96231b3b80d8
2019-03-27 17:47:42 +00:00
..
GlobalISel
[GlobalISel] Fix legalizer artifact combiner from crashing with invalid dead instructions.
2019-03-27 17:47:42 +00:00
MIRParser
MIR: Allow targets to serialize MachineFunctionInfo
2019-03-14 22:54:43 +00:00
PBQP
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
AccelTable.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Analysis.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
AsmPrinter.h
[Remarks] Emit a section containing remark diagnostics metadata
2019-03-27 01:13:59 +00:00
AsmPrinterHandler.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
AtomicExpandUtils.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
BasicTTIImpl.h
[TTI] Enable analysis of clib functions in getIntrinsicCosts. NFCI.
2019-03-12 09:48:02 +00:00
BuiltinGCs.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
CalcSpillWeights.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
CallingConvLower.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
CommandFlags.inc
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
CostTable.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
DAGCombine.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
DbgEntityHistoryCalculator.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
DebugHandlerBase.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
DFAPacketizer.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
DIE.h
[DebugInfo] Introduce DW_OP_LLVM_convert
2019-03-19 13:16:28 +00:00
DIEValue.def
[DebugInfo] Introduce DW_OP_LLVM_convert
2019-03-19 13:16:28 +00:00
DwarfStringPoolEntry.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
EdgeBundles.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ExecutionDomainFix.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ExpandReductions.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
FastISel.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
FaultMaps.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
FunctionLoweringInfo.h
[SelectionDAGBuilder] Add restrictions to EmitFuncArgumentDbgValue
2019-02-11 19:23:30 +00:00
GCMetadata.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
GCMetadataPrinter.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
GCStrategy.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
IntrinsicLowering.h
[opaque pointer types] Add a FunctionCallee wrapper type, and use it.
2019-02-01 02:28:03 +00:00
ISDOpcodes.h
[SDAG][AArch64] Legalize VECREDUCE
2019-03-11 20:22:13 +00:00
LatencyPriorityQueue.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LazyMachineBlockFrequencyInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LexicalScopes.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LinkAllAsmWriterComponents.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LinkAllCodegenComponents.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveInterval.h
[LiveRange] Reset the VNIs when splitting subranges
2019-03-26 21:27:15 +00:00
LiveIntervals.h
LiveIntervals: Add removeAllRegUnitsForPhysReg
2019-02-22 19:03:31 +00:00
LiveIntervalUnion.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LivePhysRegs.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveRangeEdit.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveRegMatrix.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveRegUnits.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveStacks.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LiveVariables.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LoopTraversal.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
LowLevelType.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineBasicBlock.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineBlockFrequencyInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineBranchProbabilityInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineCombinerPattern.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineConstantPool.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineDominanceFrontier.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineDominators.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineFrameInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineFunction.h
[COFF, ARM64] Fix localaddress to handle stack realignment and variable size objects
2019-02-01 21:41:33 +00:00
MachineFunctionPass.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineInstr.h
[NFC] add/modify wrapper function for findRegisterDefOperand().
2019-02-20 07:01:04 +00:00
MachineInstrBuilder.h
[NFC][GlobalISel]: Add a convenience method to MachineInstrBuilder to simplify getOperand(i).getReg()
2019-02-05 22:14:40 +00:00
MachineInstrBundle.h
Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h
2019-02-06 08:02:46 +00:00
MachineInstrBundleIterator.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineJumpTableInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineLoopInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineMemOperand.h
Fix a bug in the definition of isUnordered on MachineMemOperand
2019-02-01 19:08:59 +00:00
MachineModuleInfo.h
MIR: Allow targets to serialize MachineFunctionInfo
2019-03-14 22:54:43 +00:00
MachineModuleInfoImpls.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineOperand.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineOptimizationRemarkEmitter.h
Reland "[Remarks] Refactor remark diagnostic emission in a RemarkStreamer"
2019-03-06 15:20:13 +00:00
MachineOutliner.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachinePassRegistry.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachinePipeliner.h
[Pipeliner] Add two pragmas to control software pipelining optimization
2019-01-23 03:26:10 +00:00
MachinePostDominators.h
Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h
2019-02-06 08:02:46 +00:00
MachineRegionInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineRegisterInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineScheduler.h
[NFC] Declare the member data of class PostGenericScheduler as "protected" instead of "private"
2019-03-06 02:39:18 +00:00
MachineSSAUpdater.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachineTraceMetrics.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MachORelocation.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MacroFusion.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
MIRPrinter.h
Fix missing C++ mode comments
2019-03-12 20:42:14 +00:00
MIRYamlMapping.h
MIR: Allow targets to serialize MachineFunctionInfo
2019-03-14 22:54:43 +00:00
ParallelCG.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
Passes.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
PBQPRAConstraint.h
Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h
2019-02-06 08:02:46 +00:00
PreISelIntrinsicLowering.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
PseudoSourceValue.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ReachingDefAnalysis.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
RegAllocPBQP.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
RegAllocRegistry.h
CodeGen: Make RegAllocRegistry a template class
2019-02-22 19:16:52 +00:00
RegisterClassInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
RegisterPressure.h
Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>
2019-01-20 21:19:56 +00:00
RegisterScavenging.h
RegisterScavenger: Allow fail without spill
2019-02-25 20:29:04 +00:00
RegisterUsageInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ResourcePriorityQueue.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
RuntimeLibcalls.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ScheduleDAG.h
Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>
2019-01-20 21:19:56 +00:00
ScheduleDAGInstrs.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ScheduleDAGMutation.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ScheduleDFS.h
Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h
2019-02-06 08:02:46 +00:00
ScheduleHazardRecognizer.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
SchedulerRegistry.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ScoreboardHazardRecognizer.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
SDNodeProperties.td
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
SelectionDAG.h
[SDAG] add simplifications for FP at node creation time
2019-03-26 20:54:15 +00:00
SelectionDAGAddressAnalysis.h
[DAGCombiner] Unify Lifetime and memory Op aliasing.
2019-03-27 14:14:46 +00:00
SelectionDAGISel.h
Recommit r355224 "[TableGen][SelectionDAG][X86] Add specific isel matchers for immAllZerosV/immAllOnesV. Remove bitcasts from X86 patterns that are no longer necessary."
2019-03-10 05:21:52 +00:00
SelectionDAGNodes.h
[SelectionDAG] Strengthen assertions about usage of AtomicSDNodes
2019-02-28 04:07:23 +00:00
SelectionDAGTargetInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
SlotIndexes.h
Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>
2019-01-20 21:19:56 +00:00
StackMaps.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
StackProtector.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TailDuplicator.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetCallingConv.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetFrameLowering.h
[COFF, ARM64] Fix localaddress to handle stack realignment and variable size objects
2019-02-01 21:41:33 +00:00
TargetInstrInfo.h
[AMDGPU] Fix DPP combiner
2019-02-08 11:59:48 +00:00
TargetLowering.h
[TargetLowering] Add code size information on isFPImmLegal. NFC
2019-03-18 18:40:07 +00:00
TargetLoweringObjectFileImpl.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetOpcodes.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetPassConfig.h
CodeGen: Refactor regallocator command line and target selection
2019-03-19 19:33:12 +00:00
TargetRegisterInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetSchedule.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
TargetSubtargetInfo.h
[Subtarget] Merge ProcSched and ProcDesc arrays in MCSubtargetInfo into a single array.
2019-03-05 18:54:38 +00:00
UnreachableBlockElim.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ValueTypes.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
ValueTypes.td
[CodeGen] Defined MVTs v3i32, v3f32, v5i32, v5f32
2019-03-17 22:56:38 +00:00
VirtRegMap.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00
WasmEHFuncInfo.h
[WebAssembly] Delete ThrowUnwindDest map from WasmEHFuncInfo
2019-03-03 22:35:56 +00:00
WinEHFuncInfo.h
Update the file headers across all of the LLVM projects in the monorepo
2019-01-19 08:50:56 +00:00