RemoveRedundantDebugValues.cpp File Reference

The RemoveRedundantDebugValues pass removes redundant DBG_VALUEs that appear in MIR after the register allocator. More...

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Function.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/PassRegistry.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "removeredundantdebugvalues"

Functions
	STATISTIC (NumRemovedBackward, "Number of DBG_VALUEs removed (backward scan)")
	STATISTIC (NumRemovedForward, "Number of DBG_VALUEs removed (forward scan)")
	INITIALIZE_PASS (RemoveRedundantDebugValues, DEBUG_TYPE, "Remove Redundant DEBUG_VALUE analysis", false, false) RemoveRedundantDebugValues
	Default construct and initialize the pass.
static bool	reduceDbgValsForwardScan (MachineBasicBlock &MBB)
static bool	reduceDbgValsBackwardScan (MachineBasicBlock &MBB)

Detailed Description

The RemoveRedundantDebugValues pass removes redundant DBG_VALUEs that appear in MIR after the register allocator.

Definition in file RemoveRedundantDebugValues.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "removeredundantdebugvalues"

Definition at line 27 of file RemoveRedundantDebugValues.cpp.

Function Documentation

INITIALIZE_PASS()

INITIALIZE_PASS	(	RemoveRedundantDebugValues	,
		DEBUG_TYPE	,
		"Remove Redundant DEBUG_VALUE analysis"	,
		false	,
		false
	)

Default construct and initialize the pass.

Definition at line 63 of file RemoveRedundantDebugValues.cpp.

References llvm::PassRegistry::getPassRegistry(), and llvm::initializeRemoveRedundantDebugValuesPass().

reduceDbgValsBackwardScan()

static bool reduceDbgValsBackwardScan ( MachineBasicBlock &  MBB )

static

Definition at line 156 of file RemoveRedundantDebugValues.cpp.

References llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::clear(), llvm::dbgs(), llvm::SmallVectorBase< Size_T >::empty(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::erase(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), llvm::MachineOperand::isReg(), LLVM_DEBUG, MBB, MI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::reverse().

reduceDbgValsForwardScan()

static bool reduceDbgValsForwardScan ( MachineBasicBlock &  MBB )

static

Definition at line 82 of file RemoveRedundantDebugValues.cpp.

References llvm::dbgs(), llvm::SmallVectorBase< Size_T >::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::erase(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::MachineOperand::isReg(), LLVM_DEBUG, MBB, MI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and TRI.

STATISTIC() [1/2]

STATISTIC	(	NumRemovedBackward	,
		"Number of DBG_VALUEs removed (backward scan)"
	)

STATISTIC() [2/2]

STATISTIC	(	NumRemovedForward	,
		"Number of DBG_VALUEs removed (forward scan)"
	)