Clean up exit status and globals procecessing in llvm2ice.

src/IceTranslator.h

Index: src/IceTranslator.h
diff --git a/src/IceTranslator.h b/src/IceTranslator.h
index 648faeaf5f71369b98431700343e832358133a8f..11899513e415337d0b1b01a53747dfa9668093e3 100644
--- a/src/IceTranslator.h
+++ b/src/IceTranslator.h
@@ -30,17 +30,17 @@ class GlobalContext;
 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