Index: llvm/lib/Target/M68k/M68kInstrArithmetic.td
===================================================================
--- llvm/lib/Target/M68k/M68kInstrArithmetic.td
+++ llvm/lib/Target/M68k/M68kInstrArithmetic.td
@@ -293,6 +293,8 @@
                                   CMD, MxEncAddrMode_p<"opd">>;
   def NAME#"32aj" : MxBiArOp_R_RM<MN, NODE, MxType32a, MxType32.JOp, MxType32.JPat,
                                   CMD, MxEncAddrMode_j<"opd">>;
+  def NAME#"32ab" : MxBiArOp_R_RM<MN, NODE, MxType32a, MxType32.BOp, MxType32.BPat,
+                                  CMD, MxEncAddrMode_abs<"opd", 1>>;
   def NAME#"32ai" : MxBiArOp_R_RI_xEA<MN, NODE, MxType32a, CMD>;
 
   def NAME#"32ar" : MxBiArOp_R_RR_xEA<MN, NODE, MxType32a, MxType32r, CMD>;
Index: llvm/test/MC/M68k/Relocations/arith-abs.s
===================================================================
--- /dev/null
+++ llvm/test/MC/M68k/Relocations/arith-abs.s
@@ -0,0 +1,9 @@
+; RUN: llvm-mc -triple m68k -filetype=obj %s -o - | \
+; RUN:          llvm-readobj -r - | FileCheck --check-prefix=RELOC %s
+; RUN: llvm-mc -triple m68k -show-encoding %s -o - | FileCheck %s
+
+; RELOC: 0x2 R_68K_32 dst 0x0
+; CHECK: adda.l dst, %a0
+; CHECK-SAME: encoding: [0xd1,0xf9,A,A,A,A]
+; CHECK-NEXT: fixup A - offset: 2, value: dst, kind: FK_Data_4
+adda.l dst,%a0