IR: Make metadata typeless in assembly, clang side

Match LLVM changes from r224257.

llvm-svn: 224259
diff --git a/clang/test/CodeGenCXX/debug-info-zero-length-arrays.cpp b/clang/test/CodeGenCXX/debug-info-zero-length-arrays.cpp
index 144c476..f1ba636 100644
--- a/clang/test/CodeGenCXX/debug-info-zero-length-arrays.cpp
+++ b/clang/test/CodeGenCXX/debug-info-zero-length-arrays.cpp
@@ -6,7 +6,7 @@
 };
 A a;
 
-// CHECK: metadata [[ARRAY_TYPE:![0-9]*]]} ; [ DW_TAG_member ] [x]
-// CHECK: metadata !{metadata !"0x1\00\000\000\0032\000\000\000", null, null, metadata {{![0-9]+}}, metadata [[ELEM_TYPE:![0-9]+]], null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 32, offset 0] [from int]
-// CHECK: [[ELEM_TYPE]] = metadata !{metadata [[SUBRANGE:.*]]}
-// CHECK: [[SUBRANGE]] = metadata !{metadata !"0x21\000\00-1"} ; [ DW_TAG_subrange_type ] [unbounded]
+// CHECK: [[ARRAY_TYPE:![0-9]*]]} ; [ DW_TAG_member ] [x]
+// CHECK:  !"0x1\00\000\000\0032\000\000\000", null, null, {{![0-9]+}}, [[ELEM_TYPE:![0-9]+]], null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 32, offset 0] [from int]
+// CHECK: [[ELEM_TYPE]] = !{[[SUBRANGE:.*]]}
+// CHECK: [[SUBRANGE]] = !{!"0x21\000\00-1"} ; [ DW_TAG_subrange_type ] [unbounded]