1 files changed, 15 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsDSPInstrFormats.td b/lib/Target/Mips/MipsDSPInstrFormats.td
index 450d021..c5939c7 100644
--- a/lib/Target/Mips/MipsDSPInstrFormats.td
+++ b/lib/Target/Mips/MipsDSPInstrFormats.td
@@ -141,6 +141,21 @@ class SHLL_QB_FMT<bits<5> op> : DSPInst {
   let Inst{5-0}   = 0b010011;
 }
 
+// ADDUH.QB sub-class format.
+class ADDUH_QB_FMT<bits<5> op> : DSPInst {
+  bits<5> rd;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Opcode = SPECIAL3_OPCODE.V;
+
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = rd;
+  let Inst{10-6} = op;
+  let Inst{5-0} = 0b011000;
+}
+
 // DPA.W.PH sub-class format.
 class DPA_W_PH_FMT<bits<5> op> : DSPInst {
   bits<2> ac;