--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/Target/Mips/MicroMipsDSPInstrFormats.td	Tue Oct 13 17:48:58 2015 +0900
@@ -0,0 +1,28 @@
+//===-- MicroMipsDSPInstrFormats.td - Instruction Formats --*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+class MMDSPInst<string opstr = "">
+    : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>, PredicateControl {
+  let InsnPredicates = [HasDSP];
+  string BaseOpcode = opstr;
+  string Arch = "mmdsp";
+  let DecoderNamespace = "MicroMips";
+}
+
+class POOL32A_3R_FMT<bits<11> op> : MMDSPInst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Inst{31-26} = 0b000000;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-11} = rd;
+  let Inst{10-0}  = op;
+}