text: //===--- AArch64.h - Declare AArch64 target feature support -----*- C++ -*-===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  //
  // This file declares AArch64 TargetInfo objects.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_AARCH64_H
  #define LLVM_CLANG_LIB_BASIC_TARGETS_AARCH64_H
  
  #include "OSTargets.h"
  #include "clang/Basic/TargetBuiltins.h"
  #include "llvm/Support/TargetParser.h"
  
  namespace clang {
  namespace targets {
  
  class LLVM_LIBRARY_VISIBILITY AArch64TargetInfo : public TargetInfo {
    virtual void setDataLayout() = 0;
    static const TargetInfo::GCCRegAlias GCCRegAliases[];
    static const char *const GCCRegNames[];
  
    enum FPUModeEnum { FPUMode, NeonMode = (1 << 0), SveMode = (1 << 1) };
  
    unsigned FPU;
    bool HasCRC;
    bool HasCrypto;
    bool HasUnaligned;
    bool HasFullFP16;
    bool HasDotProd;
    bool HasFP16FML;
    bool HasMTE;
    bool HasTME;
    bool HasMatMul;
    bool HasSVE2;
    bool HasSVE2AES;
    bool HasSVE2SHA3;
    bool HasSVE2SM4;
    bool HasSVE2BitPerm;
    bool HasMatmulFP64;
    bool HasMatmulFP32;
  
    llvm::AArch64::ArchKind ArchKind;
  
    static const Builtin::Info BuiltinInfo[];
  
    std::string ABI;
  
  public:
    AArch64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
  
    StringRef getABI() const override;
    bool setABI(const std::string &Name) override;
  
    bool validateBranchProtection(StringRef, BranchProtectionInfo &,
                                  StringRef &) const override;
  
    bool isValidCPUName(StringRef Name) const override;
    void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
    bool setCPU(const std::string &Name) override;
  
    bool useFP16ConversionIntrinsics() const override {
      return false;
    }
  
    void getTargetDefinesARMV81A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefinesARMV82A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefinesARMV83A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefinesARMV84A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefinesARMV85A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefinesARMV86A(const LangOptions &Opts,
                                 MacroBuilder &Builder) const;
    void getTargetDefines(const LangOptions &Opts,
                          MacroBuilder &Builder) const override;
  
    ArrayRef<Builtin::Info> getTargetBuiltins() const override;
  
    bool hasFeature(StringRef Feature) const override;
    bool handleTargetFeatures(std::vector<std::string> &Features,
                              DiagnosticsEngine &Diags) override;
  
    CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
  
    bool isCLZForZeroUndef() const override;
  
    BuiltinVaListKind getBuiltinVaListKind() const override;
  
    ArrayRef<const char *> getGCCRegNames() const override;
    ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
  
    std::string convertConstraint(const char *&Constraint) const override {
      std::string R;
      switch (*Constraint) {
      case 'U': // Three-character constraint; add "@3" hint for later parsing.
        R = std::string("@3") + std::string(Constraint, 3);
        Constraint += 2;
        break;
      default:
        R = TargetInfo::convertConstraint(Constraint);
        break;
      }
      return R;
    }
  
    bool validateAsmConstraint(const char *&Name,
                               TargetInfo::ConstraintInfo &Info) const override;
    bool
    validateConstraintModifier(StringRef Constraint, char Modifier, unsigned Size,
                               std::string &SuggestedModifier) const override;
    const char *getClobbers() const override;
  
    StringRef getConstraintRegister(StringRef Constraint,
                                    StringRef Expression) const override {
      return Expression;
    }
  
    int getEHDataRegisterNumber(unsigned RegNo) const override;
  
    const char *getBFloat16Mangling() const override { return "u6__bf16"; };
    bool hasInt128Type() const override;
  
    bool hasExtIntType() const override { return true; }
  };
  
  class LLVM_LIBRARY_VISIBILITY AArch64leTargetInfo : public AArch64TargetInfo {
  public:
    AArch64leTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
  
    void getTargetDefines(const LangOptions &Opts,
                              MacroBuilder &Builder) const override;
  private:
    void setDataLayout() override;
  };
  
  class LLVM_LIBRARY_VISIBILITY WindowsARM64TargetInfo
      : public WindowsTargetInfo<AArch64leTargetInfo> {
    const llvm::Triple Triple;
  
  public:
    WindowsARM64TargetInfo(const llvm::Triple &Triple,
                           const TargetOptions &Opts);
  
    void setDataLayout() override;
  
    BuiltinVaListKind getBuiltinVaListKind() const override;
  
    CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
  };
  
  // Windows ARM, MS (C++) ABI
  class LLVM_LIBRARY_VISIBILITY MicrosoftARM64TargetInfo
      : public WindowsARM64TargetInfo {
  public:
    MicrosoftARM64TargetInfo(const llvm::Triple &Triple,
                             const TargetOptions &Opts);
  
    void getTargetDefines(const LangOptions &Opts,
                          MacroBuilder &Builder) const override;
    TargetInfo::CallingConvKind
    getCallingConvKind(bool ClangABICompat4) const override;
  
    unsigned getMinGlobalAlign(uint64_t TypeSize) const override;
  };
  
  // ARM64 MinGW target
  class LLVM_LIBRARY_VISIBILITY MinGWARM64TargetInfo
      : public WindowsARM64TargetInfo {
  public:
    MinGWARM64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
  };
  
  class LLVM_LIBRARY_VISIBILITY AArch64beTargetInfo : public AArch64TargetInfo {
  public:
    AArch64beTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
    void getTargetDefines(const LangOptions &Opts,
                          MacroBuilder &Builder) const override;
  
  private:
    void setDataLayout() override;
  };
  
  class LLVM_LIBRARY_VISIBILITY DarwinAArch64TargetInfo
      : public DarwinTargetInfo<AArch64leTargetInfo> {
  public:
    DarwinAArch64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
  
    BuiltinVaListKind getBuiltinVaListKind() const override;
  
   protected:
    void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
                      MacroBuilder &Builder) const override;
  };
  
  // 64-bit RenderScript is aarch64
  class LLVM_LIBRARY_VISIBILITY RenderScript64TargetInfo
      : public AArch64leTargetInfo {
  public:
    RenderScript64TargetInfo(const llvm::Triple &Triple,
                             const TargetOptions &Opts);
  
    void getTargetDefines(const LangOptions &Opts,
                          MacroBuilder &Builder) const override;
  };
  
  } // namespace targets
  } // namespace clang
  
  #endif // LLVM_CLANG_LIB_BASIC_TARGETS_AARCH64_H
  