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C++ LTOModule::setTargetTriple方法代码示例

本文整理汇总了C++中LTOModule::setTargetTriple方法的典型用法代码示例。如果您正苦于以下问题:C++ LTOModule::setTargetTriple方法的具体用法?C++ LTOModule::setTargetTriple怎么用?C++ LTOModule::setTargetTriple使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在LTOModule的用法示例。


在下文中一共展示了LTOModule::setTargetTriple方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: claim_file_hook

/// claim_file_hook - called by gold to see whether this file is one that
/// our plugin can handle. We'll try to open it and register all the symbols
/// with add_symbol if possible.
static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
                                        int *claimed) {
  LTOModule *M;
  const void *view;
  std::unique_ptr<MemoryBuffer> buffer;
  if (get_view) {
    if (get_view(file->handle, &view) != LDPS_OK) {
      (*message)(LDPL_ERROR, "Failed to get a view of %s", file->name);
      return LDPS_ERR;
    }
  } else {
    int64_t offset = 0;
    // Gold has found what might be IR part-way inside of a file, such as
    // an .a archive.
    if (file->offset) {
      offset = file->offset;
    }
    if (std::error_code ec = MemoryBuffer::getOpenFileSlice(
            file->fd, file->name, buffer, file->filesize, offset)) {
      (*message)(LDPL_ERROR, ec.message().c_str());
      return LDPS_ERR;
    }
    view = buffer->getBufferStart();
  }

  if (!LTOModule::isBitcodeFile(view, file->filesize))
    return LDPS_OK;

  std::string Error;
  M = LTOModule::makeLTOModule(view, file->filesize, TargetOpts, Error);
  if (!M) {
    (*message)(LDPL_ERROR,
               "LLVM gold plugin has failed to create LTO module: %s",
               Error.c_str());
    return LDPS_OK;
  }

  *claimed = 1;
  Modules.resize(Modules.size() + 1);
  claimed_file &cf = Modules.back();

  if (!options::triple.empty())
    M->setTargetTriple(options::triple.c_str());

  cf.handle = file->handle;
  unsigned sym_count = M->getSymbolCount();
  cf.syms.reserve(sym_count);

  for (unsigned i = 0; i != sym_count; ++i) {
    lto_symbol_attributes attrs = M->getSymbolAttributes(i);
    if ((attrs & LTO_SYMBOL_SCOPE_MASK) == LTO_SYMBOL_SCOPE_INTERNAL)
      continue;

    cf.syms.push_back(ld_plugin_symbol());
    ld_plugin_symbol &sym = cf.syms.back();
    sym.name = strdup(M->getSymbolName(i));
    sym.version = NULL;

    int scope = attrs & LTO_SYMBOL_SCOPE_MASK;
    bool CanBeHidden = scope == LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN;
    if (!CanBeHidden)
      CannotBeHidden.insert(sym.name);
    switch (scope) {
      case LTO_SYMBOL_SCOPE_HIDDEN:
        sym.visibility = LDPV_HIDDEN;
        break;
      case LTO_SYMBOL_SCOPE_PROTECTED:
        sym.visibility = LDPV_PROTECTED;
        break;
      case 0: // extern
      case LTO_SYMBOL_SCOPE_DEFAULT:
      case LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN:
        sym.visibility = LDPV_DEFAULT;
        break;
      default:
        (*message)(LDPL_ERROR, "Unknown scope attribute: %d", scope);
        return LDPS_ERR;
    }

    int definition = attrs & LTO_SYMBOL_DEFINITION_MASK;
    sym.comdat_key = NULL;
    switch (definition) {
      case LTO_SYMBOL_DEFINITION_REGULAR:
        sym.def = LDPK_DEF;
        break;
      case LTO_SYMBOL_DEFINITION_UNDEFINED:
        sym.def = LDPK_UNDEF;
        break;
      case LTO_SYMBOL_DEFINITION_TENTATIVE:
        sym.def = LDPK_COMMON;
        break;
      case LTO_SYMBOL_DEFINITION_WEAK:
        sym.comdat_key = sym.name;
        sym.def = LDPK_WEAKDEF;
        break;
      case LTO_SYMBOL_DEFINITION_WEAKUNDEF:
        sym.def = LDPK_WEAKUNDEF;
//.........这里部分代码省略.........
开发者ID:brucezy,项目名称:llvm,代码行数:101,代码来源:gold-plugin.cpp


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