diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 32a286241f6..2267d2e940b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-09-18  Andreas Schwab  <schwab@linux-m68k.org>
+
+	PR target/81613
+	* config/m68k/m68k.md (moveq feeding equality comparison): Check
+	that the registers are different.
+
 2017-09-18  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.c (fold_builtin_cpu): Add M_AMDFAM17H
diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
index 7933f8eb253..827dc809342 100644
--- a/gcc/config/m68k/m68k.md
+++ b/gcc/config/m68k/m68k.md
@@ -7728,7 +7728,8 @@
   "peep2_reg_dead_p (2, operands[0])
    && peep2_reg_dead_p (2, operands[2])
    && (operands[3] == pc_rtx || operands[4] == pc_rtx)
-   && DATA_REG_P (operands[2])"
+   && DATA_REG_P (operands[2])
+   && !rtx_equal_p (operands[0], operands[2])"
   [(set (match_dup 2) (plus:SI (match_dup 2) (match_dup 6)))
    (set (cc0) (compare (match_dup 2) (const_int 0)))
    (set (pc) (if_then_else (match_op_dup 5 [(cc0) (const_int 0)])