LLVM  14.0.0git
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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/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:

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Classes

class  llvm::SSAUpdaterTraits< MachineSSAUpdater >
 SSAUpdaterTraits<MachineSSAUpdater> - Traits for the SSAUpdaterImpl template, specialized for MachineSSAUpdater. More...
 
class  llvm::SSAUpdaterTraits< MachineSSAUpdater >::PHI_iterator
 Iterator for PHI operands. More...
 

Namespaces

 llvm
 This is an optimization pass for GlobalISel generic memory operations.
 

Macros

#define DEBUG_TYPE   "machine-ssaupdater"
 

Typedefs

using AvailableValsTy = DenseMap< MachineBasicBlock *, Register >
 

Functions

static AvailableValsTygetAvailableVals (void *AV)
 
static Register LookForIdenticalPHI (MachineBasicBlock *BB, SmallVectorImpl< std::pair< MachineBasicBlock *, Register >> &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 35 of file MachineSSAUpdater.cpp.

Typedef Documentation

◆ AvailableValsTy

Definition at line 37 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::numbers::e, i, llvm_unreachable, and MI.

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

◆ 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 119 of file MachineSSAUpdater.cpp.

References BB, llvm::BuildMI(), llvm::MachineRegisterInfo::createVirtualRegister(), I, MRI, and TII.

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

◆ LookForIdenticalPHI()

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

Definition at line 86 of file MachineSSAUpdater.cpp.

References BB, llvm::numbers::e, i, and I.

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