#include "llvm/CodeGen/MachineSSAUpdater.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Utils/SSAUpdaterImpl.h"
#include <utility>

Include dependency graph for MachineSSAUpdater.cpp:

Classes
class	llvm::SSAUpdaterTraits< MachineSSAUpdater >

class	llvm::SSAUpdaterTraits< MachineSSAUpdater >::PHI_iterator
	Iterator for PHI operands. More...

Namespaces
	llvm
	This class represents lattice values for constants.

Macros
#define	DEBUG_TYPE "machine-ssaupdater"

Typedefs
using	AvailableValsTy = DenseMap< MachineBasicBlock *, unsigned >

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)
	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. More...

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

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "machine-ssaupdater"

Definition at line 36 of file MachineSSAUpdater.cpp.

Typedef Documentation

◆ AvailableValsTy

using AvailableValsTy = DenseMap<MachineBasicBlock *, unsigned>

Definition at line 38 of file MachineSSAUpdater.cpp.

Function Documentation

◆ findCorrespondingPred()

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

static

Definition at line 212 of file MachineSSAUpdater.cpp.

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

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

◆ getAvailableVals()

static AvailableValsTy& getAvailableVals ( void * AV )

static

Definition at line 40 of file MachineSSAUpdater.cpp.

Referenced by llvm::MachineSSAUpdater::AddAvailableValue(), llvm::SSAUpdaterTraits< MachineSSAUpdater >::GetPHIValue(), llvm::MachineSSAUpdater::HasValueForBlock(), and llvm::MachineSSAUpdater::Initialize().

◆ InsertNewDef()

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 117 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().