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Scan the MachineFunction for DBG_VALUE instructions, and replace them with a data structure similar to LiveIntervals. The live range of a DBG_VALUE is determined by propagating it down the dominator tree until a new DBG_VALUE is found. When a DBG_VALUE lives in a register, its live range is confined to the live range of the register's value. LiveDebugVariables runs before coalescing, so DBG_VALUEs are not artificially extended when registers are joined. The missing half will recreate DBG_VALUE instructions from the intervals when register allocation is complete. The pass is disabled by default. It can be enabled with the temporary command line option -live-debug-variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120636 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
PBQP | ||
Analysis.h | ||
AsmPrinter.h | ||
BinaryObject.h | ||
CalcSpillWeights.h | ||
CallingConvLower.h | ||
FastISel.h | ||
FunctionLoweringInfo.h | ||
GCMetadata.h | ||
GCMetadataPrinter.h | ||
GCs.h | ||
GCStrategy.h | ||
IntrinsicLowering.h | ||
ISDOpcodes.h | ||
JITCodeEmitter.h | ||
LatencyPriorityQueue.h | ||
LinkAllAsmWriterComponents.h | ||
LinkAllCodegenComponents.h | ||
LiveInterval.h | ||
LiveIntervalAnalysis.h | ||
LiveStackAnalysis.h | ||
LiveVariables.h | ||
MachineBasicBlock.h | ||
MachineCodeEmitter.h | ||
MachineCodeInfo.h | ||
MachineConstantPool.h | ||
MachineDominators.h | ||
MachineFrameInfo.h | ||
MachineFunction.h | ||
MachineFunctionAnalysis.h | ||
MachineFunctionPass.h | ||
MachineInstr.h | ||
MachineInstrBuilder.h | ||
MachineJumpTableInfo.h | ||
MachineLocation.h | ||
MachineLoopInfo.h | ||
MachineMemOperand.h | ||
MachineModuleInfo.h | ||
MachineModuleInfoImpls.h | ||
MachineOperand.h | ||
MachinePassRegistry.h | ||
MachineRegisterInfo.h | ||
MachineRelocation.h | ||
MachineSSAUpdater.h | ||
MachORelocation.h | ||
ObjectCodeEmitter.h | ||
Passes.h | ||
PostRAHazardRecognizer.h | ||
ProcessImplicitDefs.h | ||
PseudoSourceValue.h | ||
RegAllocPBQP.h | ||
RegAllocRegistry.h | ||
RegisterCoalescer.h | ||
RegisterScavenging.h | ||
RuntimeLibcalls.h | ||
ScheduleDAG.h | ||
ScheduleHazardRecognizer.h | ||
SchedulerRegistry.h | ||
SelectionDAG.h | ||
SelectionDAGISel.h | ||
SelectionDAGNodes.h | ||
SlotIndexes.h | ||
TargetLoweringObjectFileImpl.h | ||
ValueTypes.h | ||
ValueTypes.td |