For PR786:
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/Local.cpp b/lib/Analysis/DataStructure/Local.cpp
index f0bb22c..d9e171b 100644
--- a/lib/Analysis/DataStructure/Local.cpp
+++ b/lib/Analysis/DataStructure/Local.cpp
@@ -409,7 +409,7 @@
       unsigned FieldNo =
            (unsigned)cast<ConstantInt>(I.getOperand())->getZExtValue();
       Offset += (unsigned)TD.getStructLayout(STy)->MemberOffsets[FieldNo];
-    } else if (const PointerType *PTy = dyn_cast<PointerType>(*I)) {
+    } else if (isa<PointerType>(*I)) {
       if (!isa<Constant>(I.getOperand()) ||
           !cast<Constant>(I.getOperand())->isNullValue())
         Value.getNode()->setArrayMarker();