diff --git a/llvm/lib/Target/ARM/ARMInstrThumb2.td b/llvm/lib/Target/ARM/ARMInstrThumb2.td
--- a/llvm/lib/Target/ARM/ARMInstrThumb2.td
+++ b/llvm/lib/Target/ARM/ARMInstrThumb2.td
@@ -2849,6 +2849,12 @@
 defm t2ORN  : T2I_bin_irs<0b0011, "orn",
                           IIC_iBITi, IIC_iBITr, IIC_iBITsi,
                           BinOpFrag<(or node:$LHS, (not node:$RHS))>, 0, "">;
+def : t2InstAlias<"orn${s}${p}.w $Rd, $Rn, $imm",
+   (t2ORNri rGPR:$Rd, rGPR:$Rn, t2_so_imm:$imm, pred:$p, cc_out:$s)>;
+def : t2InstAlias<"orn${s}${p}.w $Rd, $Rn, $Rm",
+   (t2ORNrr rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, pred:$p, cc_out:$s)>;
+def : t2InstAlias<"orn${s}${p}.w $Rd, $Rn, $ShiftedRm",
+   (t2ORNrs rGPR:$Rd, rGPR:$Rn, t2_so_reg:$ShiftedRm, pred:$p, cc_out:$s)>;
 
 /// T2I_un_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
 /// unary operation that produces a value. These are predicable and can be
diff --git a/llvm/test/MC/ARM/basic-thumb2-instructions.s b/llvm/test/MC/ARM/basic-thumb2-instructions.s
--- a/llvm/test/MC/ARM/basic-thumb2-instructions.s
+++ b/llvm/test/MC/ARM/basic-thumb2-instructions.s
@@ -1877,17 +1877,25 @@
 @ ORN
 @------------------------------------------------------------------------------
         orn r4, r5, #0xf000
+        orn.w r4, r5, #0xf000
         orn r4, r5, r6
+        orn.w r4, r5, r6
         orns r4, r5, r6
+        orns.w r4, r5, r6
         orn r4, r5, r6, lsl #5
+        orn.w r4, r5, r6, lsl #5
         orns r4, r5, r6, lsr #5
         orn r4, r5, r6, lsr #5
         orns r4, r5, r6, asr #5
         orn r4, r5, r6, ror #5
 
 @ CHECK: orn	r4, r5, #61440          @ encoding: [0x65,0xf4,0x70,0x44]
+@ CHECK: orn	r4, r5, #61440          @ encoding: [0x65,0xf4,0x70,0x44]
+@ CHECK: orn	r4, r5, r6              @ encoding: [0x65,0xea,0x06,0x04]
 @ CHECK: orn	r4, r5, r6              @ encoding: [0x65,0xea,0x06,0x04]
 @ CHECK: orns	r4, r5, r6              @ encoding: [0x75,0xea,0x06,0x04]
+@ CHECK: orns	r4, r5, r6              @ encoding: [0x75,0xea,0x06,0x04]
+@ CHECK: orn	r4, r5, r6, lsl #5      @ encoding: [0x65,0xea,0x46,0x14]
 @ CHECK: orn	r4, r5, r6, lsl #5      @ encoding: [0x65,0xea,0x46,0x14]
 @ CHECK: orns	r4, r5, r6, lsr #5      @ encoding: [0x75,0xea,0x56,0x14]
 @ CHECK: orn	r4, r5, r6, lsr #5      @ encoding: [0x65,0xea,0x56,0x14]