Add pnacl-freeze to the tests_lit/lit.cfg. Also, unsigned vs signed.

src/PNaClTranslator.cpp

 //===- subzero/src/PNaClTranslator.cpp - ICE from bitcode -----------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the PNaCl bitcode file to Ice, to machine code
@@ skipping 861 matching lines @@
       return NULL;
     Ice::Variable *Var = Func->makeVariable(Ty, CurrentNode);
     LocalOperands.push_back(Var);
     return Var;
   }
 
   // Converts a relative index (to the next instruction to be read) to
   // an absolute value index.
   uint32_t convertRelativeToAbsIndex(int32_t Id) {
     int32_t AbsNextId = CachedNumGlobalValueIDs + LocalOperands.size();
-    if (Id > 0 && AbsNextId < static_cast<uint32_t>(Id)) {
+    if (Id > 0 && AbsNextId < Id) {
       std::string Buffer;
       raw_string_ostream StrBuf(Buffer);
       StrBuf << "Invalid relative value id: " << Id
              << " (must be <= " << AbsNextId << ")";
       Error(StrBuf.str());
       // TODO(kschimpf) Remove error recovery once implementation complete.
       return 0;
     }
     return AbsNextId - Id;
   }
@@ skipping 408 matching lines @@
   if (TopLevelBlocks != 1) {
     errs() << IRFilename
            << ": Contains more than one module. Found: " << TopLevelBlocks
            << "\n";
     ErrorStatus = true;
   }
   return;
 }
 
 } // end of namespace Ice