Clean up exit status and globals procecessing in llvm2ice.

src/IceTranslator.h

 //===- subzero/src/IceTranslator.h - ICE to machine code --------*- 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 the general driver class for translating ICE to
@@ skipping 12 matching lines @@
 class Cfg;
 class GlobalContext;
 
 // Base class for translating ICE to machine code.
 // Derived classes convert other intermediate representations down to ICE,
 // and then call the appropriate (inherited) methods to convert ICE into
 // machine instructions.
 class Translator {
 public:
   Translator(GlobalContext *Ctx, ClFlags &Flags)
-      : Ctx(Ctx), Flags(Flags), ExitStatus(0) {}
+      : Ctx(Ctx), Flags(Flags), ErrorStatus(0) {}
 
   ~Translator();
-  int getExitStatus() const { return ExitStatus; }
+  bool getErrorStatus() const { return ErrorStatus; }
 
 protected:
   GlobalContext *Ctx;
   ClFlags &Flags;
-  // The exit status of the translation. 0 is successful. Nonzero
+  // The exit status of the translation. False is successful. True
   // otherwise.
-  int ExitStatus;
+  bool ErrorStatus;
   // Ideally, Func would be inside the methods that converts IR to
   // functions.  However, emitting the constant pool requires a valid
   // Cfg object, so we need to defer deleting the last non-empty Cfg
   // object to emit the constant pool (via emitConstants). TODO:
   // Since all constants are globally pooled in the GlobalContext
   // object, change all Constant related functions to use
   // GlobalContext instead of Cfg, and then make emitConstantPool use
   // that.
   llvm::OwningPtr<Cfg> Func;
 
   /// Translates the constructed ICE function Fcn to machine code.
   /// Note: As a side effect, Field Func is set to Fcn.
   void translateFcn(Cfg *Fcn);
 
   /// Emits the constant pool.
   void emitConstants();
 
 private:
   Translator(const Translator &) LLVM_DELETED_FUNCTION;
   Translator &operator=(const Translator &) LLVM_DELETED_FUNCTION;
 };
 }
 
 #endif // SUBZERO_SRC_ICETRANSLATOR_H