text: //===--- BPF.cpp - Implement BPF target feature support -------------------===//
  //
  // 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 implements BPF TargetInfo objects.
  //
  //===----------------------------------------------------------------------===//
  
  #include "BPF.h"
  #include "Targets.h"
  #include "clang/Basic/MacroBuilder.h"
  #include "clang/Basic/TargetBuiltins.h"
  #include "llvm/ADT/StringRef.h"
  
  using namespace clang;
  using namespace clang::targets;
  
  const Builtin::Info BPFTargetInfo::BuiltinInfo[] = {
  #define BUILTIN(ID, TYPE, ATTRS)                                               \
    {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr},
  #include "clang/Basic/BuiltinsBPF.def"
  };
  
  void BPFTargetInfo::getTargetDefines(const LangOptions &Opts,
                                       MacroBuilder &Builder) const {
    Builder.defineMacro("__bpf__");
    Builder.defineMacro("__BPF__");
  }
  
  static constexpr llvm::StringLiteral ValidCPUNames[] = {"generic", "v1", "v2",
                                                          "v3", "probe"};
  
  bool BPFTargetInfo::isValidCPUName(StringRef Name) const {
    return llvm::is_contained(ValidCPUNames, Name);
  }
  
  void BPFTargetInfo::fillValidCPUList(SmallVectorImpl<StringRef> &Values) const {
    Values.append(std::begin(ValidCPUNames), std::end(ValidCPUNames));
  }
  
  ArrayRef<Builtin::Info> BPFTargetInfo::getTargetBuiltins() const {
    return llvm::makeArrayRef(BuiltinInfo, clang::BPF::LastTSBuiltin -
                                               Builtin::FirstTSBuiltin);
  }
  
  bool BPFTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
                                           DiagnosticsEngine &Diags) {
    for (const auto &Feature : Features) {
      if (Feature == "+alu32") {
        HasAlu32 = true;
      }
    }
  
    return true;
  }
  