llvm::MachineOptimizationRemarkEmitter Class Reference

The optimization diagnostic interface. More...

#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"

Public Member Functions
	MachineOptimizationRemarkEmitter (MachineFunction &MF, MachineBlockFrequencyInfo *MBFI)
	MachineOptimizationRemarkEmitter (MachineOptimizationRemarkEmitter &&)=default
LLVM_ABI bool	invalidate (MachineFunction &MF, const PreservedAnalyses &PA, MachineFunctionAnalysisManager::Invalidator &Inv)
	Handle invalidation events in the new pass manager.
LLVM_ABI void	emit (DiagnosticInfoOptimizationBase &OptDiag)
	Emit an optimization remark.
bool	allowExtraAnalysis (StringRef PassName) const
	Whether we allow for extra compile-time budget to perform more analysis to be more informative.
template<typename T>
void	emit (T RemarkBuilder, decltype(RemarkBuilder()) *=nullptr)
	Take a lambda that returns a remark which will be emitted.
MachineBlockFrequencyInfo *	getBFI ()

Detailed Description

The optimization diagnostic interface.

It allows reporting when optimizations are performed and when they are not along with the reasons for it. Hotness information of the corresponding code region can be included in the remark if DiagnosticsHotnessRequested is enabled in the LLVM context.

Definition at line 154 of file MachineOptimizationRemarkEmitter.h.

Constructor & Destructor Documentation

MachineOptimizationRemarkEmitter() [1/2]

llvm::MachineOptimizationRemarkEmitter::MachineOptimizationRemarkEmitter ( MachineFunction & MF, MachineBlockFrequencyInfo * MBFI )

inline

Definition at line 156 of file MachineOptimizationRemarkEmitter.h.

Referenced by MachineOptimizationRemarkEmitter().

MachineOptimizationRemarkEmitter() [2/2]

llvm::MachineOptimizationRemarkEmitter::MachineOptimizationRemarkEmitter ( MachineOptimizationRemarkEmitter && )

default

References LLVM_ABI, and MachineOptimizationRemarkEmitter().

Member Function Documentation

allowExtraAnalysis()

bool llvm::MachineOptimizationRemarkEmitter::allowExtraAnalysis ( StringRef PassName ) const

inline

Whether we allow for extra compile-time budget to perform more analysis to be more informative.

This is useful to enable additional missed optimizations to be reported that are normally too noisy. In this mode, we can use the extra analysis (1) to filter trivial false positives or (2) to provide more context so that non-trivial false positives can be quickly detected by the user.

Definition at line 177 of file MachineOptimizationRemarkEmitter.h.

References PassName.

emit() [1/2]

void MachineOptimizationRemarkEmitter::emit

(

DiagnosticInfoOptimizationBase &

OptDiag

)

Emit an optimization remark.

Definition at line 57 of file MachineOptimizationRemarkEmitter.cpp.

References llvm::cast(), and llvm::LLVMContext::diagnose().

Referenced by emit(), and giveUpWithRemarks().

emit() [2/2]

template<typename T>

void llvm::MachineOptimizationRemarkEmitter::emit ( T RemarkBuilder, decltype(RemarkBuilder()) * = nullptr )

inline

Take a lambda that returns a remark which will be emitted.

Second argument is only used to restrict this to functions.

Definition at line 187 of file MachineOptimizationRemarkEmitter.h.

References emit(), and T.

getBFI()

MachineBlockFrequencyInfo * llvm::MachineOptimizationRemarkEmitter::getBFI ( )

inline

Definition at line 202 of file MachineOptimizationRemarkEmitter.h.

invalidate()

bool MachineOptimizationRemarkEmitter::invalidate	(	MachineFunction &	MF,
		const PreservedAnalyses &	PA,
		MachineFunctionAnalysisManager::Invalidator &	Inv )

Handle invalidation events in the new pass manager.

Definition at line 34 of file MachineOptimizationRemarkEmitter.cpp.

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The documentation for this class was generated from the following files:

• include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h
• lib/CodeGen/MachineOptimizationRemarkEmitter.cpp