TargetRegisterInfo.cpp File Reference

#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/CodeGen/LiveInterval.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/CodeGen/VirtRegMap.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Function.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Printable.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <utility>

Go to the source code of this file.

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

Macros
#define	DEBUG_TYPE   "target-reg-info"

Functions
Printable	llvm::printReg (Register Reg, const TargetRegisterInfo *TRI=nullptr, unsigned SubIdx=0, const MachineRegisterInfo *MRI=nullptr)
	Prints virtual and physical registers with or without a TRI instance.
Printable	llvm::printRegUnit (unsigned Unit, const TargetRegisterInfo *TRI)
	Create Printable object to print register units on a raw_ostream.
Printable	llvm::printVRegOrUnit (unsigned VRegOrUnit, const TargetRegisterInfo *TRI)
	Create Printable object to print virtual registers and physical registers on a raw_ostream.
Printable	llvm::printRegClassOrBank (Register Reg, const MachineRegisterInfo &RegInfo, const TargetRegisterInfo *TRI)
	Create Printable object to print register classes or register banks on a raw_ostream.
template<typename TypeT >
static const TargetRegisterClass *	getMinimalPhysRegClass (const TargetRegisterInfo *TRI, MCRegister Reg, TypeT Ty)
template<typename TypeT >
static const TargetRegisterClass *	getCommonMinimalPhysRegClass (const TargetRegisterInfo *TRI, MCRegister Reg1, MCRegister Reg2, TypeT Ty)
static void	getAllocatableSetForRC (const MachineFunction &MF, const TargetRegisterClass *RC, BitVector &R)
	getAllocatableSetForRC - Toggle the bits that represent allocatable registers for the specific register class.
static const TargetRegisterClass *	firstCommonClass (const uint32_t *A, const uint32_t *B, const TargetRegisterInfo *TRI)
static bool	shareSameRegisterFile (const TargetRegisterInfo &TRI, const TargetRegisterClass *DefRC, unsigned DefSubReg, const TargetRegisterClass *SrcRC, unsigned SrcSubReg)
	Check if the registers defined by the pair (RegisterClass, SubReg) share the same register file.

Variables
static cl::opt< unsigned >	HugeSizeForSplit ("huge-size-for-split", cl::Hidden, cl::desc("A threshold of live range size which may cause " "high compile time cost in global splitting."), cl::init(5000))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "target-reg-info"

Definition at line 42 of file TargetRegisterInfo.cpp.

Function Documentation

firstCommonClass()

static const TargetRegisterClass * firstCommonClass ( const uint32_t *  A, const uint32_t *  B, const TargetRegisterInfo *  TRI  )

inlinestatic

Definition at line 316 of file TargetRegisterInfo.cpp.

References A, B, llvm::countr_zero(), I, and TRI.

Referenced by llvm::TargetRegisterInfo::getCommonSubClass(), llvm::TargetRegisterInfo::getCommonSuperRegClass(), and llvm::TargetRegisterInfo::getMatchingSuperRegClass().

getAllocatableSetForRC()

static void getAllocatableSetForRC ( const MachineFunction &  MF, const TargetRegisterClass *  RC, BitVector &  R  )

static

getAllocatableSetForRC - Toggle the bits that represent allocatable registers for the specific register class.

Definition at line 285 of file TargetRegisterInfo.cpp.

References assert(), llvm::TargetRegisterClass::getRawAllocationOrder(), and llvm::TargetRegisterClass::isAllocatable().

Referenced by llvm::TargetRegisterInfo::getAllocatableSet().

getCommonMinimalPhysRegClass()

template<typename TypeT >

static const TargetRegisterClass * getCommonMinimalPhysRegClass ( const TargetRegisterInfo *  TRI, MCRegister  Reg1, MCRegister  Reg2, TypeT  Ty  )

static

Definition at line 235 of file TargetRegisterInfo.cpp.

References assert(), llvm::TargetRegisterClass::hasSubClass(), llvm::Register::isPhysicalRegister(), and TRI.

getMinimalPhysRegClass()

template<typename TypeT >

static const TargetRegisterClass * getMinimalPhysRegClass ( const TargetRegisterInfo *  TRI, MCRegister  Reg, TypeT  Ty  )

static

Definition at line 206 of file TargetRegisterInfo.cpp.

References assert(), llvm::TargetRegisterClass::hasSubClass(), llvm::Register::isPhysicalRegister(), and TRI.

Referenced by llvm::PPCRegisterInfo::requiresFrameIndexScavenging().

shareSameRegisterFile()

static bool shareSameRegisterFile ( const TargetRegisterInfo &  TRI, const TargetRegisterClass *  DefRC, unsigned  DefSubReg, const TargetRegisterClass *  SrcRC, unsigned  SrcSubReg  )

static

Check if the registers defined by the pair (RegisterClass, SubReg) share the same register file.

Definition at line 419 of file TargetRegisterInfo.cpp.

References std::swap(), and TRI.

Referenced by llvm::TargetRegisterInfo::shouldRewriteCopySrc().

Variable Documentation

HugeSizeForSplit

cl::opt< unsigned > HugeSizeForSplit("huge-size-for-split", cl::Hidden, cl::desc("A threshold of live range size which may cause " "high compile time cost in global splitting."), cl::init(5000)) ( "huge-size-for-split"  , cl::Hidden  , cl::desc("A threshold of live range size which may cause " "high compile time cost in global splitting.")  , cl::init(5000)    )

static

Referenced by llvm::TargetRegisterInfo::shouldRegionSplitForVirtReg().