LLVM  6.0.0svn
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MachineSSAUpdater.cpp File Reference
#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/IR/DebugLoc.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/TargetOpcodes.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/Utils/SSAUpdaterImpl.h"
#include <utility>
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

 llvm
 Compute iterated dominance frontiers using a linear time algorithm.
 

Macros

#define DEBUG_TYPE   "machine-ssaupdater"
 

Typedefs

using AvailableValsTy = DenseMap< MachineBasicBlock *, unsigned >
 

Functions

static AvailableValsTygetAvailableVals (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 MachineBasicBlockfindCorrespondingPred (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

Definition at line 38 of file MachineSSAUpdater.cpp.

Function Documentation

◆ findCorrespondingPred()

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

◆ getAvailableVals()

static AvailableValsTy& getAvailableVals ( void *  AV)
static

◆ 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().

◆ LookForIdenticalPHI()

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