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

#include "llvm/Passes/DroppedVariableStatsIR.h"

Inheritance diagram for llvm::DroppedVariableStatsIR:

Public Member Functions
	DroppedVariableStatsIR (bool DroppedVarStatsEnabled)

void	runBeforePass (Any IR)

void	runAfterPass (StringRef P, Any IR)

void	registerCallbacks (PassInstrumentationCallbacks &PIC)

Public Member Functions inherited from llvm::DroppedVariableStats
	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
void	setup ()

void	cleanup ()

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.

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.

void	run (DebugVariables &DbgVariables, StringRef FuncName, bool Before)
	Run code to populate relevant data structures over an llvm::Function or llvm::MachineFunction.

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.

virtual void	visitEveryInstruction (unsigned &DroppedCount, DenseMap< VarID, DILocation * > &InlinedAtsMap, VarID Var)=0
	Visit every llvm::Instruction or llvm::MachineInstruction and check if the debug variable denoted by its ID `Var` may have been dropped by an optimization pass.

virtual void	visitEveryDebugRecord (DenseSet< VarID > &VarIDSet, DenseMap< StringRef, DenseMap< VarID, DILocation * > > &InlinedAtsMap, StringRef FuncName, bool Before)=0
	Visit every debug record in an llvm::Function or llvm::MachineFunction and call populateVarIDSetAndInlinedMap on it.

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.