llvm-project/llvm/lib/Target/AArch64/AArch64Subtarget.h

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2.7 KiB
C++

//==-- AArch64Subtarget.h - Define Subtarget for the AArch64 ---*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the AArch64 specific subclass of TargetSubtargetInfo.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_AARCH64_SUBTARGET_H
#define LLVM_TARGET_AARCH64_SUBTARGET_H
#include "llvm/ADT/Triple.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#define GET_SUBTARGETINFO_HEADER
#include "AArch64GenSubtargetInfo.inc"
#include <string>
namespace llvm {
class StringRef;
class GlobalValue;
class AArch64Subtarget : public AArch64GenSubtargetInfo {
virtual void anchor();
protected:
enum ARMProcFamilyEnum {Others, CortexA53, CortexA57};
/// ARMProcFamily - ARM processor family: Cortex-A53, Cortex-A57, and others.
ARMProcFamilyEnum ARMProcFamily;
bool HasFPARMv8;
bool HasNEON;
bool HasCrypto;
/// AllowsUnalignedMem - If true, the subtarget allows unaligned memory
/// accesses for some types. For details, see
/// AArch64TargetLowering::allowsUnalignedMemoryAccesses().
bool AllowsUnalignedMem;
/// TargetTriple - What processor and OS we're targeting.
Triple TargetTriple;
/// CPUString - String name of used CPU.
std::string CPUString;
/// IsLittleEndian - The target is Little Endian
bool IsLittleEndian;
private:
void initializeSubtargetFeatures(StringRef CPU, StringRef FS);
public:
/// This constructor initializes the data members to match that
/// of the specified triple.
///
AArch64Subtarget(StringRef TT, StringRef CPU, StringRef FS,
bool LittleEndian);
virtual bool enableMachineScheduler() const {
return true;
}
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const;
bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
bool hasFPARMv8() const { return HasFPARMv8; }
bool hasNEON() const { return HasNEON; }
bool hasCrypto() const { return HasCrypto; }
bool allowsUnalignedMem() const { return AllowsUnalignedMem; }
bool isLittle() const { return IsLittleEndian; }
const std::string & getCPUString() const { return CPUString; }
};
} // End llvm namespace
#endif // LLVM_TARGET_AARCH64_SUBTARGET_H