本文整理汇总了C++中Linker::linkInMetadata方法的典型用法代码示例。如果您正苦于以下问题：C++ Linker::linkInMetadata方法的具体用法？C++ Linker::linkInMetadata怎么用？C++ Linker::linkInMetadata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类Linker的用法示例。
在下文中一共展示了Linker::linkInMetadata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: importFunctions
/// Import any functions requested via the -import option.
static bool importFunctions(const char *argv0, LLVMContext &Context,
Linker &L) {
StringMap<std::unique_ptr<DenseMap<unsigned, MDNode *>>>
ModuleToTempMDValsMap;
for (const auto &Import : Imports) {
// Identify the requested function and its bitcode source file.
size_t Idx = Import.find(':');
if (Idx == std::string::npos) {
errs() << "Import parameter bad format: " << Import << "\n";
return false;
}
std::string FunctionName = Import.substr(0, Idx);
std::string FileName = Import.substr(Idx + 1, std::string::npos);
// Load the specified source module.
std::unique_ptr<Module> M = loadFile(argv0, FileName, Context, false);
if (!M.get()) {
errs() << argv0 << ": error loading file '" << FileName << "'\n";
return false;
}
if (verifyModule(*M, &errs())) {
errs() << argv0 << ": " << FileName
<< ": error: input module is broken!\n";
return false;
}
Function *F = M->getFunction(FunctionName);
if (!F) {
errs() << "Ignoring import request for non-existent function "
<< FunctionName << " from " << FileName << "\n";
continue;
}
// We cannot import weak_any functions without possibly affecting the
// order they are seen and selected by the linker, changing program
// semantics.
if (F->hasWeakAnyLinkage()) {
errs() << "Ignoring import request for weak-any function " << FunctionName
<< " from " << FileName << "\n";
continue;
}
if (Verbose)
errs() << "Importing " << FunctionName << " from " << FileName << "\n";
std::unique_ptr<FunctionInfoIndex> Index;
if (!FunctionIndex.empty()) {
ErrorOr<std::unique_ptr<FunctionInfoIndex>> IndexOrErr =
llvm::getFunctionIndexForFile(FunctionIndex, diagnosticHandler);
std::error_code EC = IndexOrErr.getError();
if (EC) {
errs() << EC.message() << '\n';
return false;
}
Index = std::move(IndexOrErr.get());
}
// Save the mapping of value ids to temporary metadata created when
// importing this function. If we have already imported from this module,
// add new temporary metadata to the existing mapping.
auto &TempMDVals = ModuleToTempMDValsMap[FileName];
if (!TempMDVals)
TempMDVals = llvm::make_unique<DenseMap<unsigned, MDNode *>>();
// Link in the specified function.
DenseSet<const GlobalValue *> FunctionsToImport;
FunctionsToImport.insert(F);
if (L.linkInModule(std::move(M), Linker::Flags::None, Index.get(),
&FunctionsToImport, TempMDVals.get()))
return false;
}
// Now link in metadata for all modules from which we imported functions.
for (StringMapEntry<std::unique_ptr<DenseMap<unsigned, MDNode *>>> &SME :
ModuleToTempMDValsMap) {
// Load the specified source module.
std::unique_ptr<Module> M = loadFile(argv0, SME.getKey(), Context, true);
if (!M.get()) {
errs() << argv0 << ": error loading file '" << SME.getKey() << "'\n";
return false;
}
if (verifyModule(*M, &errs())) {
errs() << argv0 << ": " << SME.getKey()
<< ": error: input module is broken!\n";
return false;
}
// Link in all necessary metadata from this module.
if (L.linkInMetadata(*M, SME.getValue().get()))
return false;
}
return true;
}