Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/TableGen/usevalname.td

@@ -0,0 +1,24 @@
+// RUN: llvm-tblgen %s | FileCheck %s
+// XFAIL: vg_leak
+
+class Instr<list<dag> pat> {
+  list<dag> Pattern = pat;
+}
+
+class Reg {
+  int a = 3;
+}
+
+def VR128 : Reg;
+def mem_frag;
+def set;
+def addr;
+def shufp : Reg;
+
+multiclass shuffle<Reg RC> {
+  def rri : Instr<[(set RC:$dst, (shufp:$src3
+                                       RC:$src1, RC:$src2))]>;
+}
+
+// CHECK: shufp:src3
+defm ADD : shuffle<VR128>;