class MachineTraceMetrics
Declaration
class MachineTraceMetrics : public MachineFunctionPass { /* full declaration omitted */ };
Description
MachineFunctionPass - This class adapts the FunctionPass interface to allow convenient creation of passes that operate on the MachineFunction representation. Instead of overriding runOnFunction, subclasses override runOnMachineFunction.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:87
Inherits from: MachineFunctionPass
Member Variables
- private const llvm::MachineFunction* MF = nullptr
- private const llvm::TargetInstrInfo* TII = nullptr
- private const llvm::TargetRegisterInfo* TRI = nullptr
- private const llvm::MachineRegisterInfo* MRI = nullptr
- private const llvm::MachineLoopInfo* Loops = nullptr
- private llvm::TargetSchedModel SchedModel
- private SmallVector< llvm::MachineTraceMetrics::FixedBlockInfo, 4> BlockInfo
- private SmallVector<unsigned int, 0> ProcResourceCycles
- private llvm::MachineTraceMetrics::Ensemble* [1] Ensembles
- public static char ID
Method Overview
- public MachineTraceMetrics()
- public void getAnalysisUsage(llvm::AnalysisUsage &) const
- private unsigned int getCycles(unsigned int Scaled)
- public llvm::MachineTraceMetrics::Ensemble * getEnsemble(llvm::MachineTraceMetrics::Strategy)
- public ArrayRef<unsigned int> getProcResourceCycles(unsigned int MBBNum) const
- public const llvm::MachineTraceMetrics::FixedBlockInfo * getResources(const llvm::MachineBasicBlock *)
- public void invalidate(const llvm::MachineBasicBlock * MBB)
- public void releaseMemory()
- public bool runOnMachineFunction(llvm::MachineFunction &)
- public void verifyAnalysis() const
Inherited from MachineFunctionPass:
- public doInitialization
- protected getAnalysisUsage
- protected getClearedProperties
- protected getRequiredProperties
- protected getSetProperties
- protected runOnMachineFunction
Inherited from FunctionPass:
- public assignPassManager
- public createPrinterPass
- public getPotentialPassManagerType
- public runOnFunction
- protected skipFunction
Inherited from Pass:
- public assignPassManager
- public createPass
- public createPrinterPass
- public doFinalization
- public doInitialization
- public dump
- public dumpPassStructure
- public getAdjustedAnalysisPointer
- public getAnalysis
- public getAnalysis
- public getAnalysisID
- public getAnalysisID
- public getAnalysisIfAvailable
- public getAnalysisUsage
- public getAsImmutablePass
- public getAsPMDataManager
- public getPassID
- public getPassKind
- public getPassName
- public getPotentialPassManagerType
- public getResolver
- public lookupPassInfo
- public lookupPassInfo
- public mustPreserveAnalysisID
- public preparePassManager
- public print
- public releaseMemory
- public setResolver
- public verifyAnalysis
Methods
¶MachineTraceMetrics()
MachineTraceMetrics()
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:103
¶void getAnalysisUsage(llvm::AnalysisUsage&) const
void getAnalysisUsage(llvm::AnalysisUsage&) const
Description
getAnalysisUsage - Subclasses that override getAnalysisUsage must call this. For MachineFunctionPasses, calling AU.preservesCFG() indicates that the pass does not modify the MachineBasicBlock CFG.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:105
Parameters
¶unsigned int getCycles(unsigned int Scaled)
unsigned int getCycles(unsigned int Scaled)
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:415
Parameters
- unsigned int Scaled
¶llvm::MachineTraceMetrics::Ensemble* getEnsemble(
llvm::MachineTraceMetrics::Strategy)
llvm::MachineTraceMetrics::Ensemble* getEnsemble(
llvm::MachineTraceMetrics::Strategy)
Description
Get the trace ensemble representing the given trace selection strategy. The returned Ensemble object is owned by the MachineTraceMetrics analysis, and valid for the lifetime of the analysis pass.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:387
Parameters
- llvm::MachineTraceMetrics::Strategy
¶ArrayRef<unsigned int> getProcResourceCycles(
unsigned int MBBNum) const
ArrayRef<unsigned int> getProcResourceCycles(
unsigned int MBBNum) const
Description
Get the scaled number of cycles used per processor resource in MBB. This is an array with SchedModel.getNumProcResourceKinds() entries. The getResources() function above must have been called first. These numbers have already been scaled by SchedModel.getResourceFactor().
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:137
Parameters
- unsigned int MBBNum
¶const llvm::MachineTraceMetrics::FixedBlockInfo*
getResources(const llvm::MachineBasicBlock*)
const llvm::MachineTraceMetrics::FixedBlockInfo*
getResources(const llvm::MachineBasicBlock*)
Description
Get the fixed resource information about MBB. Compute it on demand.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:130
Parameters
- const llvm::MachineBasicBlock*
¶void invalidate(
const llvm::MachineBasicBlock* MBB)
void invalidate(
const llvm::MachineBasicBlock* MBB)
Description
Invalidate cached information about MBB. This must be called *before* MBB is erased, or the CFG is otherwise changed. This invalidates per-block information about resource usage for MBB only, and it invalidates per-trace information for any trace that passes through MBB. Call Ensemble::getTrace() again to update any trace handles.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:397
Parameters
- const llvm::MachineBasicBlock* MBB
¶void releaseMemory()
void releaseMemory()
Description
releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed. The default behavior of passes is to hold onto memory for the entire duration of their lifetime (which is the entire compile time). For pipelined passes, this is not a big deal because that memory gets recycled every time the pass is invoked on another program unit. For IP passes, it is more important to free memory when it is unused. Optionally implement this function to release pass memory when it is no longer used.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:107
¶bool runOnMachineFunction(llvm::MachineFunction&)
bool runOnMachineFunction(llvm::MachineFunction&)
Description
runOnMachineFunction - This method must be overloaded to perform the desired machine code transformation or analysis.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:106
Parameters
¶void verifyAnalysis() const
void verifyAnalysis() const
Description
verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information.
Declared at: llvm/include/llvm/CodeGen/MachineTraceMetrics.h:108