[mips] Add definition of instruction "drotr32" (double rotate right plus 32).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190232 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp

@@ -155,6 +155,9 @@ static void LowerLargeShift(MCInst& Inst) {
   case Mips::DSRA:
     Inst.setOpcode(Mips::DSRA32);
     return;
+  case Mips::DROTR:
+    Inst.setOpcode(Mips::DROTR32);
+    return;
   }
 }
 
@@ -206,6 +209,7 @@ EncodeInstruction(const MCInst &MI, raw_ostream &OS,
   case Mips::DSLL:
   case Mips::DSRL:
   case Mips::DSRA:
+  case Mips::DROTR:
     LowerLargeShift(TmpInst);
     break;
     // Double extract instruction is chosen by pos and size operands

lib/Target/Mips/Mips64InstrInfo.td

@@ -111,6 +111,7 @@ let Predicates = [HasMips64r2, HasStdEnc] in {
                SRA_FM<0x3a, 1>;
   def DROTRV : shift_rotate_reg<"drotrv", GPR64Opnd, rotr>,
                SRLV_FM<0x16, 1>;
+  def DROTR32 : shift_rotate_imm<"drotr32", uimm5, GPR64Opnd>, SRA_FM<0x3e, 1>;
 }
 
 /// Load and Store Instructions