Add codegen support for NEON vst3 intrinsics with <1 x i64> vectors.

llvm-svn: 83518
diff --git a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
index 3233f27..773ca7e 100644
--- a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
+++ b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
@@ -143,6 +143,7 @@
   case ARM::VST3d8:
   case ARM::VST3d16:
   case ARM::VST3d32:
+  case ARM::VST3d64:
   case ARM::VST3LNd8:
   case ARM::VST3LNd16:
   case ARM::VST3LNd32: