Clean up exit status and globals procecessing in llvm2ice.

src/IceTranslator.cpp

 //===- subzero/src/IceTranslator.cpp - 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 defines the general driver class for translating ICE to
@@ skipping 22 matching lines @@
   } else {
     Ice::Timer TTranslate;
     Func->translate();
     if (Flags.SubzeroTimingEnabled) {
       std::cerr << "[Subzero timing] Translate function "
                 << Func->getFunctionName() << ": " << TTranslate.getElapsedSec()
                 << " sec\n";
     }
     if (Func->hasError()) {
       std::cerr << "ICE translation error: " << Func->getError() << "\n";
-      ExitStatus = 1;
+      ErrorStatus = true;
     }
 
     Ice::Timer TEmit;
     Func->emit();
     if (Flags.SubzeroTimingEnabled) {
       std::cerr << "[Subzero timing] Emit function " << Func->getFunctionName()
                 << ": " << TEmit.getElapsedSec() << " sec\n";
     }
   }
 }
 
 void Translator::emitConstants() {
   if (!Flags.DisableTranslation && Func)
     Func->getTarget()->emitConstants();
 }