clang/lib/Basic/Targets/BPF.cpp

   1 //===--- BPF.cpp - Implement BPF target feature support -------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements BPF TargetInfo objects.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "BPF.h"
  14 #include "Targets.h"
  15 #include "clang/Basic/MacroBuilder.h"
  16 #include "clang/Basic/TargetBuiltins.h"
  17 #include "llvm/ADT/StringRef.h"
  18
  19 using namespace clang;
  20 using namespace clang::targets;
  21
  22 static constexpr Builtin::Info BuiltinInfo[] = {
  23 #define BUILTIN(ID, TYPE, ATTRS)                                               \
  24   {#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
  25 #include "clang/Basic/BuiltinsBPF.def"
  26 };
  27
  28 void BPFTargetInfo::getTargetDefines(const LangOptions &Opts,
  29                                      MacroBuilder &Builder) const {
  30   Builder.defineMacro("__bpf__");
  31   Builder.defineMacro("__BPF__");
  32 }
  33
  34 static constexpr llvm::StringLiteral ValidCPUNames[] = {"generic", "v1", "v2",
  35                                                         "v3", "probe"};
  36
  37 bool BPFTargetInfo::isValidCPUName(StringRef Name) const {
  38   return llvm::is_contained(ValidCPUNames, Name);
  39 }
  40
  41 void BPFTargetInfo::fillValidCPUList(SmallVectorImpl<StringRef> &Values) const {
  42   Values.append(std::begin(ValidCPUNames), std::end(ValidCPUNames));
  43 }
  44
  45 ArrayRef<Builtin::Info> BPFTargetInfo::getTargetBuiltins() const {
  46   return llvm::ArrayRef(BuiltinInfo,
  47                         clang::BPF::LastTSBuiltin - Builtin::FirstTSBuiltin);
  48 }
  49
  50 bool BPFTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
  51                                          DiagnosticsEngine &Diags) {
  52   for (const auto &Feature : Features) {
  53     if (Feature == "+alu32") {
  54       HasAlu32 = true;
  55     }
  56   }
  57
  58   return true;
  59 }