1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp b/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp
new file mode 100644
index 000000000000..cbe413ce2556
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp
@@ -0,0 +1,58 @@
+//===-- PluginLoader.cpp - Implement -load command line option ------------===//
+//
+// 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 the -load <plugin> command line option handler.
+//
+//===----------------------------------------------------------------------===//
+
+#define DONT_GET_PLUGIN_LOADER_OPTION
+#include "llvm/Support/PluginLoader.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/raw_ostream.h"
+#include <vector>
+using namespace llvm;
+
+namespace {
+
+struct Plugins {
+  sys::SmartMutex<true> Lock;
+  std::vector<std::string> List;
+};
+
+Plugins &getPlugins() {
+  static Plugins P;
+  return P;
+}
+
+} // anonymous namespace
+
+void PluginLoader::operator=(const std::string &Filename) {
+  auto &P = getPlugins();
+  sys::SmartScopedLock<true> Lock(P.Lock);
+  std::string Error;
+  if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) {
+    errs() << "Error opening '" << Filename << "': " << Error
+           << "\n  -load request ignored.\n";
+  } else {
+    P.List.push_back(Filename);
+  }
+}
+
+unsigned PluginLoader::getNumPlugins() {
+  auto &P = getPlugins();
+  sys::SmartScopedLock<true> Lock(P.Lock);
+  return P.List.size();
+}
+
+std::string &PluginLoader::getPlugin(unsigned num) {
+  auto &P = getPlugins();
+  sys::SmartScopedLock<true> Lock(P.Lock);
+  assert(num < P.List.size() && "Asking for an out of bounds plugin");
+  return P.List[num];
+}