add an assert.  the cast<> below would catch this but a message is more
useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60674 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 457e94f..2413bbc 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -454,6 +454,8 @@
 void MemoryDependenceAnalysis::
 getNonLocalPointerDependency(Value *Pointer, bool isLoad, BasicBlock *FromBB,
                              SmallVectorImpl<NonLocalDepEntry> &Result) {
+  assert(isa<PointerType>(Pointer->getType()) &&
+         "Can't get pointer deps of a non-pointer!");
   Result.clear();
   
   // We know that the pointer value is live into FromBB find the def/clobbers