Silence a bunch (but not all) "variable written but not read" warnings

when building with assertions disabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137460 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/ScheduleDAG.cpp

@@ -140,6 +140,7 @@ void SUnit::removePred(const SDep &D) {
           break;
         }
       assert(FoundSucc && "Mismatching preds / succs lists!");
+      (void)FoundSucc;
       Preds.erase(I);
       // Update the bookkeeping.
       if (P.getKind() == SDep::Data) {