Rather than having special rules like "intrinsics cannot

throw exceptions", just mark intrinsics with the nounwind
attribute.  Likewise, mark intrinsics as readnone/readonly
and get rid of special aliasing logic (which didn't use
anything more than this anyway).

llvm-svn: 44544

llvm/tools/bugpoint/Miscompilation.cpp

@@ -685,7 +685,7 @@ static void CleanupAndPrepareModules(BugDriver &BD, Module *&Test,
   // Use the function we just added to get addresses of functions we need.
   for (Module::iterator F = Safe->begin(), E = Safe->end(); F != E; ++F) {
     if (F->isDeclaration() && !F->use_empty() && &*F != resolverFunc &&
-        F->getIntrinsicID() == 0 /* ignore intrinsics */) {
+        !F->isIntrinsic() /* ignore intrinsics */) {
       Function *TestFn = Test->getFunction(F->getName());
 
       // Don't forward functions which are external in the test module too.