Update clang to r339409.
Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/Passes/PassPlugin.h b/linux-x64/clang/include/llvm/Passes/PassPlugin.h
new file mode 100644
index 0000000..af8f11a
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Passes/PassPlugin.h
@@ -0,0 +1,114 @@
+//===- llvm/Passes/PassPlugin.h - Public Plugin API -----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This defines the public entry point for new-PM pass plugins.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_PASSES_PASSPLUGIN_H
+#define LLVM_PASSES_PASSPLUGIN_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Error.h"
+#include <cstdint>
+#include <string>
+
+namespace llvm {
+class PassBuilder;
+
+/// \macro LLVM_PLUGIN_API_VERSION
+/// Identifies the API version understood by this plugin.
+///
+/// When a plugin is loaded, the driver will check it's supported plugin version
+/// against that of the plugin. A mismatch is an error. The supported version
+/// will be incremented for ABI-breaking changes to the \c PassPluginLibraryInfo
+/// struct, i.e. when callbacks are added, removed, or reordered.
+#define LLVM_PLUGIN_API_VERSION 1
+
+extern "C" {
+/// Information about the plugin required to load its passes
+///
+/// This struct defines the core interface for pass plugins and is supposed to
+/// be filled out by plugin implementors. LLVM-side users of a plugin are
+/// expected to use the \c PassPlugin class below to interface with it.
+struct PassPluginLibraryInfo {
+ /// The API version understood by this plugin, usually \c
+ /// LLVM_PLUGIN_API_VERSION
+ uint32_t APIVersion;
+ /// A meaningful name of the plugin.
+ const char *PluginName;
+ /// The version of the plugin.
+ const char *PluginVersion;
+
+ /// The callback for registering plugin passes with a \c PassBuilder
+ /// instance
+ void (*RegisterPassBuilderCallbacks)(PassBuilder &);
+};
+}
+
+/// A loaded pass plugin.
+///
+/// An instance of this class wraps a loaded pass plugin and gives access to
+/// its interface defined by the \c PassPluginLibraryInfo it exposes.
+class PassPlugin {
+public:
+ /// Attempts to load a pass plugin from a given file.
+ ///
+ /// \returns Returns an error if either the library cannot be found or loaded,
+ /// there is no public entry point, or the plugin implements the wrong API
+ /// version.
+ static Expected<PassPlugin> Load(const std::string &Filename);
+
+ /// Get the filename of the loaded plugin.
+ StringRef getFilename() const { return Filename; }
+
+ /// Get the plugin name
+ StringRef getPluginName() const { return Info.PluginName; }
+
+ /// Get the plugin version
+ StringRef getPluginVersion() const { return Info.PluginVersion; }
+
+ /// Get the plugin API version
+ uint32_t getAPIVersion() const { return Info.APIVersion; }
+
+ /// Invoke the PassBuilder callback registration
+ void registerPassBuilderCallbacks(PassBuilder &PB) const {
+ Info.RegisterPassBuilderCallbacks(PB);
+ }
+
+private:
+ PassPlugin(const std::string &Filename, const sys::DynamicLibrary &Library)
+ : Filename(Filename), Library(Library), Info() {}
+
+ std::string Filename;
+ sys::DynamicLibrary Library;
+ PassPluginLibraryInfo Info;
+};
+}
+
+/// The public entry point for a pass plugin.
+///
+/// When a plugin is loaded by the driver, it will call this entry point to
+/// obtain information about this plugin and about how to register its passes.
+/// This function needs to be implemented by the plugin, see the example below:
+///
+/// ```
+/// extern "C" ::llvm::PassPluginLibraryInfo LLVM_ATTRIBUTE_WEAK
+/// llvmGetPassPluginInfo() {
+/// return {
+/// LLVM_PLUGIN_API_VERSION, "MyPlugin", "v0.1", [](PassBuilder &PB) { ... }
+/// };
+/// }
+/// ```
+extern "C" ::llvm::PassPluginLibraryInfo LLVM_ATTRIBUTE_WEAK
+llvmGetPassPluginInfo();
+
+#endif /* LLVM_PASSES_PASSPLUGIN_H */