A class to collect and print dropped debug information due to LLVM IR optimization passes. More...

#include "llvm/IR/DroppedVariableStatsIR.h"

Inheritance diagram for llvm::DroppedVariableStatsIR:

Public Member Functions
	DroppedVariableStatsIR (bool DroppedVarStatsEnabled)
void	runBeforePass (StringRef P, Any IR)
void	runAfterPass (StringRef P, Any IR)
void	registerCallbacks (PassInstrumentationCallbacks &PIC)
Public Member Functions inherited from llvm::DroppedVariableStats
LLVM_ABI	DroppedVariableStats (bool DroppedVarStatsEnabled)
virtual	~DroppedVariableStats ()
	DroppedVariableStats (const DroppedVariableStats &)=delete
void	operator= (const DroppedVariableStats &)=delete
bool	getPassDroppedVariables ()

Additional Inherited Members
Protected Member Functions inherited from llvm::DroppedVariableStats
LLVM_ABI void	setup ()
LLVM_ABI void	cleanup ()
LLVM_ABI void	calculateDroppedStatsAndPrint (DebugVariables &DbgVariables, StringRef FuncName, StringRef PassID, StringRef FuncOrModName, StringRef PassLevel, const Function *Func)
	Calculate the number of dropped variables in an llvm::Function or llvm::MachineFunction and print the relevant information to stdout.
LLVM_ABI bool	updateDroppedCount (DILocation DbgLoc, const DIScope Scope, const DIScope DbgValScope, DenseMap< VarID, DILocation > &InlinedAtsMap, VarID Var, unsigned &DroppedCount)
	Check if a `Var` has been dropped or is a false positive.
LLVM_ABI void	run (DebugVariables &DbgVariables, StringRef FuncName, bool Before)
	Run code to populate relevant data structures over an llvm::Function or llvm::MachineFunction.
LLVM_ABI void	populateVarIDSetAndInlinedMap (const DILocalVariable DbgVar, DebugLoc DbgLoc, DenseSet< VarID > &VarIDSet, DenseMap< StringRef, DenseMap< VarID, DILocation > > &InlinedAtsMap, StringRef FuncName, bool Before)
	Populate the VarIDSet and InlinedAtMap with the relevant information needed for before and after pass analysis to determine dropped variable status.
Protected Attributes inherited from llvm::DroppedVariableStats
bool	DroppedVariableStatsEnabled = false
SmallVector< DenseMap< const Function *, DebugVariables > >	DebugVariablesStack
	A stack of a DenseMap, that maps DebugVariables for every pass to an llvm::Function.
DenseSet< const DIScope * >	VisitedScope
	A DenseSet tracking whether a scope was visited before.
SmallVector< DenseMap< StringRef, DenseMap< VarID, DILocation * > > >	InlinedAts
	A stack of DenseMaps, which map the name of an llvm::Function to a DenseMap of VarIDs and their inlinedAt locations before an optimization pass has run.

Detailed Description

A class to collect and print dropped debug information due to LLVM IR optimization passes.

After every LLVM IR pass is run, it will print how many #dbg_values were dropped due to that pass.

Definition at line 32 of file DroppedVariableStatsIR.h.

Constructor & Destructor Documentation

◆ DroppedVariableStatsIR()

llvm::DroppedVariableStatsIR::DroppedVariableStatsIR ( bool DroppedVarStatsEnabled )

inline

Definition at line 34 of file DroppedVariableStatsIR.h.

References llvm::DroppedVariableStats::DroppedVariableStats().

Member Function Documentation

◆ registerCallbacks()

void DroppedVariableStatsIR::registerCallbacks ( PassInstrumentationCallbacks & PIC )

Definition at line 89 of file DroppedVariableStatsIR.cpp.

References llvm::DroppedVariableStats::cleanup(), llvm::DroppedVariableStats::DroppedVariableStatsEnabled, IR, P, PIC, runAfterPass(), and runBeforePass().

◆ runAfterPass()

void DroppedVariableStatsIR::runAfterPass	(	StringRef	P,
		Any	IR )

Definition at line 36 of file DroppedVariableStatsIR.cpp.

References llvm::DroppedVariableStats::cleanup(), F, IR, and P.

Referenced by registerCallbacks().

◆ runBeforePass()

void DroppedVariableStatsIR::runBeforePass	(	StringRef	P,
		Any	IR )

Definition at line 28 of file DroppedVariableStatsIR.cpp.

References F, IR, P, and llvm::DroppedVariableStats::setup().