Index: lib/Target/Mips/MicroMipsDSPInstrFormats.td
===================================================================
--- lib/Target/Mips/MicroMipsDSPInstrFormats.td
+++ lib/Target/Mips/MicroMipsDSPInstrFormats.td
@@ -11,12 +11,13 @@
 class MMDSPInst<string opstr = "">
     : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>, PredicateControl {
   let EncodingPredicates = [HasDSP];
+  let InsnPredicates = [InMicroMips];
   string BaseOpcode = opstr;
   string Arch = "mmdsp";
   let DecoderNamespace = "MicroMips";
 }
 
-class POOL32A_3R_FMT<bits<11> op> : MMDSPInst {
+class POOL32A_3R_FMT<string instr_asm, bits<11> op> : MMDSPInst<instr_asm> {
   bits<5> rd;
   bits<5> rs;
   bits<5> rt;
@@ -27,3 +28,16 @@
   let Inst{15-11} = rd;
   let Inst{10-0}  = op;
 }
+
+class POOL32A_AC2R_FMT<string instr_asm, bits<8> funct> : MMDSPInst<instr_asm> {
+  bits<2> ac;
+  bits<5> rs;
+  bits<5> rt;
+
+  let Inst{31-26} = 0;
+  let Inst{25-21} = rt;
+  let Inst{20-16} = rs;
+  let Inst{15-14} = ac;
+  let Inst{13-6} = funct;
+  let Inst{5-0} = 0b111100;
+}
Index: lib/Target/Mips/MicroMipsDSPInstrInfo.td
===================================================================
--- lib/Target/Mips/MicroMipsDSPInstrInfo.td
+++ lib/Target/Mips/MicroMipsDSPInstrInfo.td
@@ -12,8 +12,27 @@
 //===----------------------------------------------------------------------===//
 
 // Instruction encoding.
-class ADDU_QB_MM_ENC : POOL32A_3R_FMT<0b00011001101>;
+class ADDU_QB_MM_ENC : POOL32A_3R_FMT<"addu.qb", 0b00011001101>;
+class DPA_W_PH_MMR2_ENC : POOL32A_AC2R_FMT<"dpa.w.ph", 0b00000010>;
+class DPAQ_S_W_PH_MM_ENC : POOL32A_AC2R_FMT<"dpaq_s.w.ph", 0b00001010>;
+class DPAQ_SA_L_W_MM_ENC : POOL32A_AC2R_FMT<"dpaq_sa.l.w", 0b01001010>;
+class DPAQX_S_W_PH_MMR2_ENC : POOL32A_AC2R_FMT<"dpaqx_s.w.ph", 0b10001010>;
+class DPAQX_SA_W_PH_MMR2_ENC : POOL32A_AC2R_FMT<"dpaqx_sa.w.ph", 0b11001010>;
+class DPAU_H_QBL_MM_ENC : POOL32A_AC2R_FMT<"dpau.h.qbl", 0b10000010>;
+class DPAU_H_QBR_MM_ENC : POOL32A_AC2R_FMT<"dpau.h.qbr", 0b11000010>;
+class DPAX_W_PH_MMR2_ENC : POOL32A_AC2R_FMT<"dpax.w.ph", 0b01000010>;
 
 // Instruction defs.
-// MIPS DSP Rev 1
-def ADDU_QB_MM : DspMMRel, ADDU_QB_MM_ENC, ADDU_QB_DESC, ISA_MICROMIPS;
+// microMIPS DSP Rev 1
+def ADDU_QB_MM : DspMMRel, ADDU_QB_MM_ENC, ADDU_QB_DESC;
+def DPAQ_S_W_PH_MM : DspMMRel, DPAQ_S_W_PH_MM_ENC, DPAQ_S_W_PH_DESC;
+def DPAQ_SA_L_W_MM : DspMMRel, DPAQ_SA_L_W_MM_ENC, DPAQ_SA_L_W_DESC;
+def DPAU_H_QBL_MM : DspMMRel, DPAU_H_QBL_MM_ENC, DPAU_H_QBL_DESC;
+def DPAU_H_QBR_MM : DspMMRel, DPAU_H_QBR_MM_ENC, DPAU_H_QBR_DESC;
+// microMIPS DSP Rev 2
+def DPA_W_PH_MMR2 : DspMMRel, DPA_W_PH_MMR2_ENC, DPA_W_PH_DESC, ISA_DSPR2;
+def DPAQX_S_W_PH_MMR2 : DspMMRel, DPAQX_S_W_PH_MMR2_ENC, DPAQX_S_W_PH_DESC,
+                      ISA_DSPR2;
+def DPAQX_SA_W_PH_MMR2 : DspMMRel, DPAQX_SA_W_PH_MMR2_ENC, DPAQX_SA_W_PH_DESC,
+                       ISA_DSPR2;
+def DPAX_W_PH_MMR2 : DspMMRel, DPAX_W_PH_MMR2_ENC, DPAX_W_PH_DESC, ISA_DSPR2;
Index: lib/Target/Mips/MipsDSPInstrFormats.td
===================================================================
--- lib/Target/Mips/MipsDSPInstrFormats.td
+++ lib/Target/Mips/MipsDSPInstrFormats.td
@@ -28,6 +28,10 @@
 def HasDSPR3 : Predicate<"Subtarget->hasDSPR3()">,
                AssemblerPredicate<"FeatureDSPR3">;
 
+class ISA_DSPR2 {
+  list<Predicate> EncodingPredicates = [HasDSPR2];
+}
+
 // Fields.
 class Field6<bits<6> val> {
   bits<6> V = val;
Index: lib/Target/Mips/MipsDSPInstrInfo.td
===================================================================
--- lib/Target/Mips/MipsDSPInstrInfo.td
+++ lib/Target/Mips/MipsDSPInstrInfo.td
@@ -263,6 +263,7 @@
   string AsmString = !strconcat(instr_asm, "\t$rd, $rs, $rt");
   list<dag> Pattern = [(set ROD:$rd, (OpNode ROS:$rs, ROT:$rt))];
   InstrItinClass Itinerary = itin;
+  string BaseOpcode = instr_asm;
 }
 
 class RADDU_W_QB_DESC_BASE<string instr_asm, SDPatternOperator OpNode,
@@ -444,6 +445,7 @@
   list<dag> Pattern = [(set ACC64DSPOpnd:$ac,
                         (OpNode GPR32Opnd:$rs, GPR32Opnd:$rt, ACC64DSPOpnd:$acin))];
   string Constraints = "$acin = $ac";
+  string BaseOpcode = instr_asm;
 }
 
 class MULT_DESC_BASE<string instr_asm, SDPatternOperator OpNode,
@@ -1132,13 +1134,13 @@
 def MFLO_DSP : MFLO_ENC, MFLO_DESC;
 def MTHI_DSP : MTHI_ENC, MTHI_DESC;
 def MTLO_DSP : MTLO_ENC, MTLO_DESC;
-def DPAU_H_QBL : DPAU_H_QBL_ENC, DPAU_H_QBL_DESC;
-def DPAU_H_QBR : DPAU_H_QBR_ENC, DPAU_H_QBR_DESC;
+def DPAU_H_QBL : DspMMRel, DPAU_H_QBL_ENC, DPAU_H_QBL_DESC;
+def DPAU_H_QBR : DspMMRel, DPAU_H_QBR_ENC, DPAU_H_QBR_DESC;
 def DPSU_H_QBL : DPSU_H_QBL_ENC, DPSU_H_QBL_DESC;
 def DPSU_H_QBR : DPSU_H_QBR_ENC, DPSU_H_QBR_DESC;
-def DPAQ_S_W_PH : DPAQ_S_W_PH_ENC, DPAQ_S_W_PH_DESC;
+def DPAQ_S_W_PH : DspMMRel, DPAQ_S_W_PH_ENC, DPAQ_S_W_PH_DESC;
 def DPSQ_S_W_PH : DPSQ_S_W_PH_ENC, DPSQ_S_W_PH_DESC;
-def DPAQ_SA_L_W : DPAQ_SA_L_W_ENC, DPAQ_SA_L_W_DESC;
+def DPAQ_SA_L_W : DspMMRel, DPAQ_SA_L_W_ENC, DPAQ_SA_L_W_DESC;
 def DPSQ_SA_L_W : DPSQ_SA_L_W_ENC, DPSQ_SA_L_W_DESC;
 def MULT_DSP : MULT_DSP_ENC, MULT_DSP_DESC;
 def MULTU_DSP : MULTU_DSP_ENC, MULTU_DSP_DESC;
@@ -1214,11 +1216,11 @@
 def MULQ_S_W : MULQ_S_W_ENC, MULQ_S_W_DESC;
 def MULQ_RS_W : MULQ_RS_W_ENC, MULQ_RS_W_DESC;
 def MULQ_S_PH : MULQ_S_PH_ENC, MULQ_S_PH_DESC;
-def DPA_W_PH : DPA_W_PH_ENC, DPA_W_PH_DESC;
+def DPA_W_PH : DspMMRel, DPA_W_PH_ENC, DPA_W_PH_DESC;
 def DPS_W_PH : DPS_W_PH_ENC, DPS_W_PH_DESC;
-def DPAQX_S_W_PH : DPAQX_S_W_PH_ENC, DPAQX_S_W_PH_DESC;
-def DPAQX_SA_W_PH : DPAQX_SA_W_PH_ENC, DPAQX_SA_W_PH_DESC;
-def DPAX_W_PH : DPAX_W_PH_ENC, DPAX_W_PH_DESC;
+def DPAQX_S_W_PH : DspMMRel, DPAQX_S_W_PH_ENC, DPAQX_S_W_PH_DESC;
+def DPAQX_SA_W_PH : DspMMRel, DPAQX_SA_W_PH_ENC, DPAQX_SA_W_PH_DESC;
+def DPAX_W_PH : DspMMRel, DPAX_W_PH_ENC, DPAX_W_PH_DESC;
 def DPSX_W_PH : DPSX_W_PH_ENC, DPSX_W_PH_DESC;
 def DPSQX_S_W_PH : DPSQX_S_W_PH_ENC, DPSQX_S_W_PH_DESC;
 def DPSQX_SA_W_PH : DPSQX_SA_W_PH_ENC, DPSQX_SA_W_PH_DESC;
Index: test/MC/Disassembler/Mips/micromips_dsp.txt
===================================================================
--- test/MC/Disassembler/Mips/micromips_dsp.txt
+++ test/MC/Disassembler/Mips/micromips_dsp.txt
@@ -2,3 +2,10 @@
 
 0x00 0xa4 0x18 0xcd # CHECK: addu.qb $3, $4, $5
 
+0x00 0x65 0x42 0xbc # CHECK: dpaq_s.w.ph $ac1, $5, $3
+
+0x00 0x64 0x92 0xbc # CHECK: dpaq_sa.l.w $ac2, $4, $3
+
+0x00 0x83 0x60 0xbc # CHECK: dpau.h.qbl $ac1, $3, $4
+
+0x02 0xb4 0xb0 0xbc # CHECK: dpau.h.qbr $ac2, $20, $21
Index: test/MC/Disassembler/Mips/micromips_dspr2.txt
===================================================================
--- /dev/null
+++ test/MC/Disassembler/Mips/micromips_dspr2.txt
@@ -0,0 +1,9 @@
+# RUN: llvm-mc --disassemble %s -triple=mips-unknown-linux -mcpu=mips32r6 -mattr=micromips  -mattr=+dspr2 | FileCheck %s
+
+0x00 0x43 0x00 0xbc # CHECK: dpa.w.ph $ac0, $3, $2
+
+0x00 0xec 0xe2 0xbc # CHECK: dpaqx_s.w.ph $ac3, $12, $7
+
+0x00 0xc5 0x32 0xbc # CHECK: dpaqx_sa.w.ph $ac0, $5, $6
+
+0x00 0x22 0xd0 0xbc # CHECK: dpax.w.ph $ac3, $2, $1
Index: test/MC/Mips/micromips32r6/micromips-dsp-instructions.s
===================================================================
--- test/MC/Mips/micromips32r6/micromips-dsp-instructions.s
+++ test/MC/Mips/micromips32r6/micromips-dsp-instructions.s
@@ -2,4 +2,8 @@
 
   .set noat
   addu.qb $3, $4, $5           # CHECK: addu.qb $3, $4, $5      # encoding: [0x00,0xa4,0x18,0xcd]
+  dpaq_s.w.ph $ac1, $5, $3     # CHECK: dpaq_s.w.ph $ac1, $5, $3   # encoding: [0x00,0x65,0x42,0xbc]
+  dpaq_sa.l.w $ac2, $4, $3     # CHECK: dpaq_sa.l.w $ac2, $4, $3   # encoding: [0x00,0x64,0x92,0xbc]
+  dpau.h.qbl $ac1, $3, $4      # CHECK: dpau.h.qbl $ac1, $3, $4    # encoding: [0x00,0x83,0x60,0xbc]
+  dpau.h.qbr $ac2, $20, $21    # CHECK: dpau.h.qbr $ac2, $20, $21  # encoding: [0x02,0xb4,0xb0,0xbc]
 
Index: test/MC/Mips/micromips32r6/micromips-dspr2-instructions.s
===================================================================
--- /dev/null
+++ test/MC/Mips/micromips32r6/micromips-dspr2-instructions.s
@@ -0,0 +1,7 @@
+# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 -mattr=micromips -mattr=+dspr2 | FileCheck %s
+
+  .set noat
+  dpa.w.ph $ac0, $3, $2        # CHECK: dpa.w.ph $ac0, $3, $2      # encoding: [0x00,0x43,0x00,0xbc]
+  dpaqx_s.w.ph $ac3, $12, $7   # CHECK: dpaqx_s.w.ph $ac3, $12, $7 # encoding: [0x00,0xec,0xe2,0xbc]
+  dpaqx_sa.w.ph $ac0, $5, $6   # CHECK: dpaqx_sa.w.ph $ac0, $5, $6 # encoding: [0x00,0xc5,0x32,0xbc]
+  dpax.w.ph $ac3, $2, $1       # CHECK: dpax.w.ph $ac3, $2, $1     # encoding: [0x00,0x22,0xd0,0xbc]