Index: lib/Target/Mips/MicroMips32r6InstrInfo.td
===================================================================
--- lib/Target/Mips/MicroMips32r6InstrInfo.td
+++ lib/Target/Mips/MicroMips32r6InstrInfo.td
@@ -21,6 +21,11 @@
 class ADDU_MMR6_ENC : ARITH_FM_MMR6<"addu", 0x150>;
 class BALC_MMR6_ENC  : BRANCH_OFF26_FM<0b101101>;
 class BC_MMR6_ENC : BRANCH_OFF26_FM<0b100101>;
+class NOR_MMR6_ENC : ARITH_FM_MMR6<"nor", 0x2d0>;
+class OR_MMR6_ENC : ARITH_FM_MMR6<"or", 0x290>;
+class ORI_MMR6_ENC : ADDI_FM_MMR6<"ori", 0x14>;
+class XOR_MMR6_ENC : ARITH_FM_MMR6<"xor", 0x310>;
+class XORI_MMR6_ENC : ADDI_FM_MMR6<"xori", 0x1c>;
 
 //===----------------------------------------------------------------------===//
 //
@@ -45,6 +50,11 @@
   list<Register> Defs = [RA];
 }
 class BC_MMR6_DESC : BC_MMR6_DESC_BASE<"bc", brtarget26>;
+class NOR_MMR6_DESC : ArithLogicR<"nor", GPR32Opnd>;
+class OR_MMR6_DESC : ArithLogicR<"or", GPR32Opnd>;
+class ORI_MMR6_DESC : ArithLogicI<"ori", simm16, GPR32Opnd>;
+class XOR_MMR6_DESC : ArithLogicR<"xor", GPR32Opnd>;
+class XORI_MMR6_DESC : ArithLogicI<"xori", simm16, GPR32Opnd>;
 
 //===----------------------------------------------------------------------===//
 //
@@ -58,4 +68,9 @@
 def ADDU_MMR6 : StdMMR6Rel, ADDU_MMR6_DESC, ADDU_MMR6_ENC, ISA_MICROMIPS32R6;
 def BALC_MMR6 : R6MMR6Rel, BALC_MMR6_ENC, BALC_MMR6_DESC, ISA_MICROMIPS32R6;
 def BC_MMR6 : R6MMR6Rel, BC_MMR6_ENC, BC_MMR6_DESC, ISA_MICROMIPS32R6;
+def NOR_MMR6 : StdMMR6Rel, NOR_MMR6_DESC, NOR_MMR6_ENC, ISA_MICROMIPS32R6;
+def OR_MMR6 : StdMMR6Rel, OR_MMR6_DESC, OR_MMR6_ENC, ISA_MICROMIPS32R6;
+def ORI_MMR6 : StdMMR6Rel, ORI_MMR6_DESC, ORI_MMR6_ENC, ISA_MICROMIPS32R6;
+def XOR_MMR6 : StdMMR6Rel, XOR_MMR6_DESC, XOR_MMR6_ENC, ISA_MICROMIPS32R6;
+def XORI_MMR6 : StdMMR6Rel, XORI_MMR6_DESC, XORI_MMR6_ENC, ISA_MICROMIPS32R6;
 }
Index: lib/Target/Mips/MipsInstrInfo.td
===================================================================
--- lib/Target/Mips/MipsInstrInfo.td
+++ lib/Target/Mips/MipsInstrInfo.td
@@ -1139,11 +1139,11 @@
 def ANDi  : MMRel, ArithLogicI<"andi", uimm16, GPR32Opnd, II_ANDI, immZExt16,
                                and>, ADDI_FM<0xc>;
 }
-def ORi   : MMRel, ArithLogicI<"ori", uimm16, GPR32Opnd, II_ORI, immZExt16,
-                               or>,
+def ORi   : MMRel, StdMMR6Rel,
+            ArithLogicI<"ori", uimm16, GPR32Opnd, II_ORI, immZExt16, or>,
             ADDI_FM<0xd>;
-def XORi  : MMRel, ArithLogicI<"xori", uimm16, GPR32Opnd, II_XORI, immZExt16,
-                               xor>,
+def XORi  : MMRel, StdMMR6Rel,
+            ArithLogicI<"xori", uimm16, GPR32Opnd, II_XORI, immZExt16, xor>,
             ADDI_FM<0xe>;
 def LUi   : MMRel, LoadUpper<"lui", GPR32Opnd, uimm16>, LUI_FM;
 let AdditionalPredicates = [NotInMicroMips] in {
@@ -1163,12 +1163,12 @@
 let AdditionalPredicates = [NotInMicroMips] in {
 def AND   : MMRel, ArithLogicR<"and", GPR32Opnd, 1, II_AND, and>,
             ADD_FM<0, 0x24>;
-def OR    : MMRel, ArithLogicR<"or", GPR32Opnd, 1, II_OR, or>,
+def OR    : MMRel, StdMMR6Rel, ArithLogicR<"or", GPR32Opnd, 1, II_OR, or>,
             ADD_FM<0, 0x25>;
-def XOR   : MMRel, ArithLogicR<"xor", GPR32Opnd, 1, II_XOR, xor>,
+def XOR   : MMRel, StdMMR6Rel, ArithLogicR<"xor", GPR32Opnd, 1, II_XOR, xor>,
             ADD_FM<0, 0x26>;
 }
-def NOR   : MMRel, LogicNOR<"nor", GPR32Opnd>, ADD_FM<0, 0x27>;
+def NOR   : MMRel, StdMMR6Rel, LogicNOR<"nor", GPR32Opnd>, ADD_FM<0, 0x27>;
 
 /// Shift Instructions
 let AdditionalPredicates = [NotInMicroMips] in {
Index: test/MC/Disassembler/Mips/micromips32r6.txt
===================================================================
--- test/MC/Disassembler/Mips/micromips32r6.txt
+++ test/MC/Disassembler/Mips/micromips32r6.txt
@@ -14,3 +14,18 @@
 
 # CHECK: bc 14572256
 0x94 0x37 0x96 0xb8
+
+# CHECK: nor $3, $4, $5
+0x00 0xa4 0x1a 0xd0
+
+# CHECK: or $3, $4, $5
+0x00,0xa4,0x1a,0x90
+
+# CHECK: ori $3, $4, 1234
+0x50 0x64 0x04 0xd2
+
+# CHECK: xor $3, $4, $5
+0x00 0xa4 0x1b 0x10
+
+# CHECK: xori $3, $4, 1234
+0x70 0x64 0x04 0xd2
Index: test/MC/Mips/micromips32r6/valid.s
===================================================================
--- test/MC/Mips/micromips32r6/valid.s
+++ test/MC/Mips/micromips32r6/valid.s
@@ -6,3 +6,8 @@
   addu $3, $4, $5          # CHECK: addu $3, $4, $5     # encoding: [0x00,0xa4,0x19,0x50]
   balc 14572256            # CHECK: balc 14572256       # encoding: [0xb4,0x37,0x96,0xb8]
   bc 14572256              # CHECK: bc 14572256         # encoding: [0x94,0x37,0x96,0xb8]
+  nor $3, $4, $5           # CHECK: nor $3, $4, $5      # encoding: [0x00,0xa4,0x1a,0xd0]
+  or $3, $4, $5            # CHECK: or $3, $4, $5       # encoding: [0x00,0xa4,0x1a,0x90]
+  ori $3, $4, 1234         # CHECK: ori $3, $4, 1234    # encoding: [0x50,0x64,0x04,0xd2]
+  xor $3, $4, $5           # CHECK: xor $3, $4, $5      # encoding: [0x00,0xa4,0x1b,0x10]
+  xori $3, $4, 1234        # CHECK: xori $3, $4, 1234   # encoding: [0x70,0x64,0x04,0xd2]