MachineSSAUpdater.cpp File Reference

#include "llvm/CodeGen/MachineSSAUpdater.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/AlignOf.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/Utils/SSAUpdaterImpl.h"

Include dependency graph for MachineSSAUpdater.cpp:

Go to the source code of this file.

Classes
class	llvm::SSAUpdaterTraits< MachineSSAUpdater >
class	llvm::SSAUpdaterTraits< MachineSSAUpdater >::PHI_iterator
	Iterator for PHI operands. More...
Namespaces
namespace	llvm
	List of target independent CodeGen pass IDs.
Defines
#define	DEBUG_TYPE   "machine-ssaupdater"
Typedefs
typedef DenseMap < MachineBasicBlock *, unsigned >	AvailableValsTy
Functions
static AvailableValsTy &	getAvailableVals (void *AV)
static unsigned	LookForIdenticalPHI (MachineBasicBlock *BB, SmallVectorImpl< std::pair< MachineBasicBlock *, unsigned > > &PredValues)
static MachineInstrBuilder	InsertNewDef (unsigned Opcode, MachineBasicBlock *BB, MachineBasicBlock::iterator I, const TargetRegisterClass *RC, MachineRegisterInfo *MRI, const TargetInstrInfo *TII)
static MachineBasicBlock *	findCorrespondingPred (const MachineInstr *MI, MachineOperand *U)

---

Define Documentation

#define DEBUG_TYPE   "machine-ssaupdater"

Definition at line 33 of file MachineSSAUpdater.cpp.

---

Typedef Documentation

typedef DenseMap<MachineBasicBlock*, unsigned> AvailableValsTy

Definition at line 35 of file MachineSSAUpdater.cpp.

---

Function Documentation

static MachineBasicBlock* findCorrespondingPred	(	const MachineInstr *	MI,
		MachineOperand *	U
	)		[static]

Definition at line 211 of file MachineSSAUpdater.cpp.

References llvm::MachineOperand::getMBB(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), and llvm_unreachable.

Referenced by llvm::MachineSSAUpdater::RewriteUse().

static AvailableValsTy& getAvailableVals

(

void *

AV

)

[static]

Definition at line 36 of file MachineSSAUpdater.cpp.

Referenced by llvm::MachineSSAUpdater::AddAvailableValue(), llvm::MachineSSAUpdater::HasValueForBlock(), and llvm::MachineSSAUpdater::Initialize().

static MachineInstrBuilder InsertNewDef	(	unsigned	Opcode,
		MachineBasicBlock *	BB,
		MachineBasicBlock::iterator	I,
		const TargetRegisterClass *	RC,
		MachineRegisterInfo *	MRI,
		const TargetInstrInfo *	TII
	)		[static]

InsertNewDef - Insert an empty PHI or IMPLICIT_DEF instruction which define a value of the given register class at the start of the specified basic block. It returns the virtual register defined by the instruction.

Definition at line 115 of file MachineSSAUpdater.cpp.

References llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), and llvm::MCInstrInfo::get().

Referenced by llvm::SSAUpdaterTraits< MachineSSAUpdater >::CreateEmptyPHI(), llvm::SSAUpdaterTraits< MachineSSAUpdater >::GetUndefVal(), and llvm::MachineSSAUpdater::GetValueInMiddleOfBlock().

static unsigned LookForIdenticalPHI	(	MachineBasicBlock *	BB,
		SmallVectorImpl< std::pair< MachineBasicBlock *, unsigned > > &	PredValues
	)		[static]

Definition at line 82 of file MachineSSAUpdater.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::empty(), llvm::MachineBasicBlock::end(), and I.

Referenced by llvm::MachineSSAUpdater::GetValueInMiddleOfBlock().