--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/llvm/test/TableGen/MultiPat.td	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,113 @@
+// RUN: llvm-tblgen %s | FileCheck %s
+// XFAIL: vg_leak
+
+class ValueType<int size, int value> {
+  int Size = size;
+  int Value = value;
+}
+
+def v2i64  : ValueType<128, 22>;   //  2 x i64 vector value
+def v2f64  : ValueType<128, 28>;   //  2 x f64 vector value
+
+class Intrinsic<string name> {
+  string Name = name;
+}
+
+class Pattern<dag patternToMatch, list<dag> resultInstrs> {
+  dag             PatternToMatch  = patternToMatch;
+  list<dag>       ResultInstrs    = resultInstrs;
+}
+
+// Pat - A simple (but common) form of a pattern, which produces a simple result
+// not needing a full list.
+class Pat<dag pattern, dag result> : Pattern<pattern, [result]>;
+
+class Inst<bits<8> opcode, dag oopnds, dag iopnds, string asmstr, 
+           list<dag> pattern> {
+  bits<8> Opcode = opcode;
+  dag OutOperands = oopnds;
+  dag InOperands = iopnds;
+  string AssemblyString = asmstr;
+  list<dag> Pattern = pattern;
+}
+
+def ops;
+def outs;
+def ins;
+
+def set;
+
+// Define registers
+class Register<string n> {
+  string Name = n;
+}
+
+class RegisterClass<list<ValueType> regTypes, list<Register> regList> {
+  list<ValueType> RegTypes = regTypes;
+  list<Register> MemberList = regList;
+}
+
+def XMM0: Register<"xmm0">;
+def XMM1: Register<"xmm1">;
+def XMM2: Register<"xmm2">;
+def XMM3: Register<"xmm3">;
+def XMM4: Register<"xmm4">;
+def XMM5: Register<"xmm5">;
+def XMM6: Register<"xmm6">;
+def XMM7: Register<"xmm7">;
+def XMM8:  Register<"xmm8">;
+def XMM9:  Register<"xmm9">;
+def XMM10: Register<"xmm10">;
+def XMM11: Register<"xmm11">;
+def XMM12: Register<"xmm12">;
+def XMM13: Register<"xmm13">;
+def XMM14: Register<"xmm14">;
+def XMM15: Register<"xmm15">;
+
+def VR128 : RegisterClass<[v2i64, v2f64],
+                          [XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
+                           XMM8, XMM9, XMM10, XMM11,
+                           XMM12, XMM13, XMM14, XMM15]>;
+
+// Dummy for subst
+def REGCLASS : RegisterClass<[], []>;
+def MNEMONIC;
+
+// Define intrinsics
+def int_x86_sse2_add_ps : Intrinsic<"addps">;
+def int_x86_sse2_add_pd : Intrinsic<"addpd">;
+def INTRINSIC : Intrinsic<"Dummy">;
+def bitconvert;
+
+class MakePat<list<dag> patterns> : Pat<patterns[0], patterns[1]>;
+
+class Base<bits<8> opcode, dag opnds, dag iopnds, string asmstr, Intrinsic intr, 
+           list<list<dag>> patterns>
+      : Inst<opcode, opnds, iopnds, asmstr, 
+             !foreach(pattern, patterns[0],
+		      !foreach(operand, pattern,
+			       !subst(INTRINSIC, intr, 
+		               !subst(REGCLASS, VR128, 
+                               !subst(MNEMONIC, set, operand)))))>,
+        MakePat<!foreach(pattern, patterns[1],
+		         !foreach(operand, pattern,
+			          !subst(INTRINSIC, intr, 
+				  !subst(REGCLASS, VR128, 
+                                  !subst(MNEMONIC, set, operand)))))>;
+
+multiclass arith<bits<8> opcode, string asmstr, string intr, list<list<dag>> patterns> {
+  def PS : Base<opcode, (outs VR128:$dst), (ins VR128:$src1, VR128:$src2),
+                 !strconcat(asmstr, "\t$dst, $src1, $src2"), !cast<Intrinsic>(!subst("SUFFIX", "_ps", intr)), patterns>;
+
+  def PD : Base<opcode, (outs VR128:$dst), (ins VR128:$src1, VR128:$src2),
+                 !strconcat(asmstr, "\t$dst, $src1, $src2"), !cast<Intrinsic>(!subst("SUFFIX", "_pd", intr)), patterns>;
+}
+
+defm ADD : arith<0x58, "add", "int_x86_sse2_addSUFFIX",
+                  // rr Patterns
+                 [[(set REGCLASS:$dst, (INTRINSIC REGCLASS:$src1, REGCLASS:$src2))],
+                   [(set REGCLASS:$dst, (bitconvert (INTRINSIC REGCLASS:$src1, REGCLASS:$src2))),
+                    (MNEMONIC REGCLASS:$dst, REGCLASS:$src)]]>;
+
+// CHECK: [(set VR128:$dst, (int_x86_sse2_add_pd VR128:$src1, VR128:$src2))]
+// CHECK: [(set VR128:$dst, (int_x86_sse2_add_ps VR128:$src1, VR128:$src2))]