llvm-6502/lib/Target/AArch64/AArch64RegisterInfo.h
Benjamin Kramer 00e08fcaa0 Canonicalize header guards into a common format.
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215558 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-13 16:26:38 +00:00

102 lines
4.0 KiB
C++

//==- AArch64RegisterInfo.h - AArch64 Register Information Impl --*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the AArch64 implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64REGISTERINFO_H
#define LLVM_LIB_TARGET_AARCH64_AARCH64REGISTERINFO_H
#define GET_REGINFO_HEADER
#include "AArch64GenRegisterInfo.inc"
namespace llvm {
class AArch64InstrInfo;
class AArch64Subtarget;
class MachineFunction;
class RegScavenger;
class TargetRegisterClass;
struct AArch64RegisterInfo : public AArch64GenRegisterInfo {
private:
const AArch64InstrInfo *TII;
const AArch64Subtarget *STI;
public:
AArch64RegisterInfo(const AArch64InstrInfo *tii, const AArch64Subtarget *sti);
bool isReservedReg(const MachineFunction &MF, unsigned Reg) const;
/// Code Generation virtual methods...
const MCPhysReg *
getCalleeSavedRegs(const MachineFunction *MF = nullptr) const override;
const uint32_t *getCallPreservedMask(CallingConv::ID) const override;
unsigned getCSRFirstUseCost() const override {
// The cost will be compared against BlockFrequency where entry has the
// value of 1 << 14. A value of 5 will choose to spill or split really
// cold path instead of using a callee-saved register.
return 5;
}
// Calls involved in thread-local variable lookup save more registers than
// normal calls, so they need a different mask to represent this.
const uint32_t *getTLSCallPreservedMask() const;
/// getThisReturnPreservedMask - Returns a call preserved mask specific to the
/// case that 'returned' is on an i64 first argument if the calling convention
/// is one that can (partially) model this attribute with a preserved mask
/// (i.e. it is a calling convention that uses the same register for the first
/// i64 argument and an i64 return value)
///
/// Should return NULL in the case that the calling convention does not have
/// this property
const uint32_t *getThisReturnPreservedMask(CallingConv::ID) const;
BitVector getReservedRegs(const MachineFunction &MF) const override;
const TargetRegisterClass *
getPointerRegClass(const MachineFunction &MF,
unsigned Kind = 0) const override;
const TargetRegisterClass *
getCrossCopyRegClass(const TargetRegisterClass *RC) const override;
bool requiresRegisterScavenging(const MachineFunction &MF) const override;
bool useFPForScavengingIndex(const MachineFunction &MF) const override;
bool requiresFrameIndexScavenging(const MachineFunction &MF) const override;
bool needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const override;
bool isFrameOffsetLegal(const MachineInstr *MI,
int64_t Offset) const override;
void materializeFrameBaseRegister(MachineBasicBlock *MBB, unsigned BaseReg,
int FrameIdx,
int64_t Offset) const override;
void resolveFrameIndex(MachineInstr &MI, unsigned BaseReg,
int64_t Offset) const override;
void eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
unsigned FIOperandNum,
RegScavenger *RS = nullptr) const override;
bool cannotEliminateFrame(const MachineFunction &MF) const;
bool requiresVirtualBaseRegisters(const MachineFunction &MF) const override;
bool hasBasePointer(const MachineFunction &MF) const;
unsigned getBaseRegister() const;
// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const override;
unsigned getRegPressureLimit(const TargetRegisterClass *RC,
MachineFunction &MF) const override;
};
} // end namespace llvm
#endif