PnaclCoordinator: Use llc's module-splitting for pexe compilation

ppapi/native_client/src/trusted/plugin/pnacl_coordinator.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_
 
 #include <set>
 #include <map>
 #include <vector>
@@ skipping 59 matching lines @@
 //     Complete when RunTranslate is invoked.
 // START_LD_AND_LLC_SUBPROCESS_AND_INITIATE_TRANSLATION
 //     Complete when RunTranslate returns.
 // TRANSLATION_COMPLETE
 //     Complete when TranslateFinished is invoked.
 //
 // OPEN_NEXE_FOR_SEL_LDR
 //   Complete when NexeReadDidOpen is invoked.
 class PnaclCoordinator: public CallbackSource<FileStreamData> {
  public:
+  // Maximum number of object files passable to the translator. Cannot be
+  // changed without changing the RPC signatures.
+  const static size_t kMaxTranslatorObjectFiles = 16;
   virtual ~PnaclCoordinator();
 
   // The factory method for translations.
   static PnaclCoordinator* BitcodeToNative(
       Plugin* plugin,
       const nacl::string& pexe_url,
       const PnaclOptions& pnacl_options,
       const pp::CompletionCallback& translate_notify_callback);
 
   // Call this to take ownership of the FD of the translated nexe after
@@ skipping 105 matching lines @@
   nacl::scoped_ptr<const Manifest> manifest_;
   // An auxiliary class that manages downloaded resources (llc and ld nexes).
   nacl::scoped_ptr<PnaclResources> resources_;
 
   // The URL for the pexe file.
   nacl::string pexe_url_;
   // Options for translation.
   PnaclOptions pnacl_options_;
 
   // Object file, produced by the translator and consumed by the linker.
-  nacl::scoped_ptr<TempFile> obj_file_;
+  std::vector<TempFile*> obj_files_;
+  // Number of split modules (threads) for llc
+  int split_module_count_;
+  int num_object_files_opened_;
+
   // Translated nexe file, produced by the linker.
   nacl::scoped_ptr<TempFile> temp_nexe_file_;
   // Passed to the browser, which sets it to true if there is a translation
   // cache hit.
   PP_Bool is_cache_hit_;
 
   // Downloader for streaming translation
   nacl::scoped_ptr<FileDownloader> streaming_downloader_;
 
   // Used to report information when errors (PPAPI or otherwise) are reported.
@@ skipping 12 matching lines @@
   // The helper thread used to do translations via SRPC.
   // Keep this last in declaration order to ensure the other variables
   // haven't been destroyed yet when its destructor runs.
   nacl::scoped_ptr<PnaclTranslateThread> translate_thread_;
 };
 
 //----------------------------------------------------------------------
 
 }  // namespace plugin;
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_