Subzero: Emit functions and global initializers in a separate thread.

src/IceClFlags.h

 //===- subzero/src/IceClFlags.h - Cl Flags for translation ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares command line flags controlling translation.
@@ skipping 122 matching lines @@
   void setTranslateOnly(const IceString &NewValue) { TranslateOnly = NewValue; }
 
   const IceString &getVerboseFocusOn() const { return VerboseFocusOn; }
   void setVerboseFocusOn(const IceString &NewValue) {
     VerboseFocusOn = NewValue;
   }
 
   // size_t accessors.
 
   size_t getNumTranslationThreads() const { return NumTranslationThreads; }
+  bool isSequential() const { return NumTranslationThreads == 0; }
   void setNumTranslationThreads(size_t NewValue) {
     NumTranslationThreads = NewValue;
   }
 
 private:
   bool AllowErrorRecovery;
   bool AllowUninitializedGlobals;
   bool DataSections;
   bool DecorateAsm;
   bool DisableInternal;
@@ skipping 15 matching lines @@
   IceString TimingFocusOn;
   IceString TranslateOnly;
   IceString VerboseFocusOn;
 
   size_t NumTranslationThreads; // 0 means completely sequential
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECLFLAGS_H