Move previously unsupported VLA test to vla.c

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64173 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/vla.c b/test/CodeGen/vla.c
index 907de91..2197ee1 100644
--- a/test/CodeGen/vla.c
+++ b/test/CodeGen/vla.c
@@ -13,3 +13,8 @@
 {
   return sizeof(int[n]);
 }
+
+int f0(int x) {
+  int vla[x];
+  return vla[x-1];
+}