Remove AllocationInst.  Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary.

llvm-svn: 84969
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index dc0d489..5672510 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -470,7 +470,7 @@
   }
 
   case Instruction::Alloca: {
-    AllocationInst *AI = cast<AllocationInst>(V);
+    AllocaInst *AI = cast<AllocaInst>(V);
     unsigned Align = AI->getAlignment();
     if (Align == 0 && TD)
       Align = TD->getABITypeAlignment(AI->getType()->getElementType());