Add codegen support for NEON vst2 intrinsics with <1 x i64> vectors.

llvm-svn: 83513
diff --git a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
index 5de2810..3233f27 100644
--- a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
+++ b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
@@ -125,6 +125,7 @@
   case ARM::VST2d8:
   case ARM::VST2d16:
   case ARM::VST2d32:
+  case ARM::VST2d64:
   case ARM::VST2LNd8:
   case ARM::VST2LNd16:
   case ARM::VST2LNd32: