Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/TableGen/MultiClass.td

@@ -0,0 +1,30 @@
+// RUN: llvm-tblgen %s | FileCheck %s
+// XFAIL: vg_leak
+
+// CHECK: zing = 4
+// CHECK: zing = 4
+// CHECK-NOT: zing = 4
+
+class C1<int A, string B> { 
+  int bar = A;
+  string thestr = B;
+  int zing;
+}
+
+def T : C1<4, "blah">;
+
+multiclass t<int a> {
+  def S1 : C1<a, "foo"> {
+    int foo = 4;
+    let bar = 1;
+  }
+  def S2 : C1<a, "bar">;
+}
+
+defm FOO : t<42>;
+
+def T4 : C1<6, "foo">;
+
+let zing = 4 in
+  defm BAZ : t<3>;
+