Convert to using llvm streams instead of iostreams.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31989 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/BasicAliasAnalysis.cpp

@@ -745,7 +745,7 @@ BasicAliasAnalysis::CheckGEPInstructions(
     assert(Offset1<Offset2 && "There is at least one different constant here!");
 
     if ((uint64_t)(Offset2-Offset1) >= SizeMax) {
-      //std::cerr << "Determined that these two GEP's don't alias ["
+      //llvm_cerr << "Determined that these two GEP's don't alias ["
       //          << SizeMax << " bytes]: \n" << *GEP1 << *GEP2;
       return NoAlias;
     }