--- a/lib/Target/Mips/Mips32r6InstrFormats.td	Tue Jan 26 22:56:36 2016 +0900
+++ b/lib/Target/Mips/Mips32r6InstrFormats.td	Fri Nov 25 19:14:25 2016 +0900
@@ -45,6 +45,7 @@
 class OPGROUP<bits<6> Val> {
   bits<6> Value = Val;
 }
+def OPGROUP_COP0     : OPGROUP<0b010000>;
 def OPGROUP_COP1     : OPGROUP<0b010001>;
 def OPGROUP_COP2     : OPGROUP<0b010010>;
 def OPGROUP_ADDI     : OPGROUP<0b001000>;
@@ -201,6 +202,21 @@
   let Inst{15-0} = offset;
 }
 
+class COP0_EVP_DVP_FM<bits<1> sc> : MipsR6Inst {
+  bits<5> rt;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = OPGROUP_COP0.Value;
+  let Inst{25-21} = 0b01011;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = 0b00000;
+  let Inst{10-6}  = 0b00000;
+  let Inst{5}     = sc;
+  let Inst{4-3}   = 0b00;
+  let Inst{2-0}   = 0b100;
+}
+
 class COP1_2R_FM<bits<6> funct, FIELD_FMT Format> : MipsR6Inst {
   bits<5> fs;
   bits<5> fd;
@@ -360,7 +376,7 @@
 }
 
 // This class is ambiguous with other branches:
-//   BEQC/BNEC require that rs > rt
+//   BEQC/BNEC require that rs < rt && rs != 0
 class CMP_BRANCH_2R_OFF16_FM<OPGROUP funct> : MipsR6Inst {
   bits<5> rs;
   bits<5> rt;