X86RegisterInfo.cpp File Reference

#include "X86RegisterInfo.h"
#include "X86FrameLowering.h"
#include "X86MachineFunctionInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "X86GenRegisterInfo.inc"

Include dependency graph for X86RegisterInfo.cpp:

Go to the source code of this file.

Macros
#define	GET_REGINFO_TARGET_DESC

Functions
static bool	CantUseSP (const MachineFrameInfo &MFI)
static bool	tryOptimizeLEAtoMOV (MachineBasicBlock::iterator II)

Variables
static cl::opt< bool >	EnableBasePointer ("x86-use-base-pointer", cl::Hidden, cl::init(true), cl::desc("Enable use of a base pointer for complex stack frames"))

Macro Definition Documentation

GET_REGINFO_TARGET_DESC

#define GET_REGINFO_TARGET_DESC

Definition at line 38 of file X86RegisterInfo.cpp.

Function Documentation

CantUseSP()

static bool CantUseSP ( const MachineFrameInfo &  MFI )

static

Definition at line 606 of file X86RegisterInfo.cpp.

References llvm::MachineFrameInfo::hasOpaqueSPAdjustment(), and llvm::MachineFrameInfo::hasVarSizedObjects().

Referenced by llvm::X86RegisterInfo::canRealignStack(), and llvm::X86RegisterInfo::hasBasePointer().

tryOptimizeLEAtoMOV()

static bool tryOptimizeLEAtoMOV ( MachineBasicBlock::iterator  II )

static

Definition at line 655 of file X86RegisterInfo.cpp.

References llvm::X86InstrInfo::copyPhysReg(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getDebugLoc(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getSubtarget(), llvm::getX86SubSuperRegister(), llvm::MachineOperand::isKill(), MI, and TII.

Referenced by llvm::X86RegisterInfo::eliminateFrameIndex().

Variable Documentation

EnableBasePointer

cl::opt<bool> EnableBasePointer("x86-use-base-pointer", cl::Hidden, cl::init(true), cl::desc("Enable use of a base pointer for complex stack frames"))

static

Referenced by llvm::X86RegisterInfo::hasBasePointer().