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

src/assembler.h

 //===- subzero/src/assembler.h - Integrated assembler -----------*- C++ -*-===//
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
 //                        The Subzero Code Generator
@@ skipping 131 matching lines @@
   }
 
   void ExtendCapacity();
 };
 
 class Assembler {
   Assembler(const Assembler &) = delete;
   Assembler &operator=(const Assembler &) = delete;
 
 public:
-  Assembler() : buffer_(*this) {}
+  Assembler() : FunctionName(""), IsInternal(false), buffer_(*this) {}
   virtual ~Assembler() {}
 
   // Allocate a chunk of bytes using the per-Assembler allocator.
   uintptr_t AllocateBytes(size_t bytes) {
     // For now, alignment is not related to NaCl bundle alignment, since
     // the buffer's GetPosition is relative to the base. So NaCl bundle
     // alignment checks can be relative to that base. Later, the buffer
     // will be copied out to a ".text" section (or an in memory-buffer
     // that can be mprotect'ed with executable permission), and that
     // second buffer should be aligned for NaCl.
@@ skipping 20 matching lines @@
   // Return a view of all the bytes of code for the current function.
   llvm::StringRef getBufferView() const;
 
   const FixupRefList &fixups() const { return buffer_.fixups(); }
 
   AssemblerFixup *createFixup(FixupKind Kind, const Constant *Value) {
     return buffer_.createFixup(Kind, Value);
   }
 
   void emitIASBytes(GlobalContext *Ctx) const;
+  bool getInternal() const { return IsInternal; }
+  void setInternal(bool Internal) { IsInternal = Internal; }
+  const IceString &getFunctionName() { return FunctionName; }
+  void setFunctionName(const IceString &NewName) { FunctionName = NewName; }
 
 private:
   ArenaAllocator<32 * 1024> Allocator;
+  // FunctionName and IsInternal are transferred from the original Cfg
+  // object, since the Cfg object may be deleted by the time the
+  // assembler buffer is emitted.
+  IceString FunctionName;
+  bool IsInternal;
 
 protected:
   AssemblerBuffer buffer_;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ASSEMBLER_H_