diff --git a/gas/ChangeLog b/gas/ChangeLog
index 37072c0edb..4e047783e5 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+Fri Oct 10 00:47:44 1997  Michael Meissner  <meissner@cygnus.com>
+
+	* config/tc-d10v.c (parallel_ok): Note that auto increment and
+	decrement modify the index register.
+
 Thu Oct  9 15:17:50 1997  Ian Lance Taylor  <ian@cygnus.com>
 
 	From Robin Kirkham <Robin.Kirkham@mlb.dmt.csiro.au>:
diff --git a/gas/config/tc-d10v.c b/gas/config/tc-d10v.c
index 14ef3976ac..bbed44bcbe 100644
--- a/gas/config/tc-d10v.c
+++ b/gas/config/tc-d10v.c
@@ -871,6 +871,12 @@ parallel_ok (op1, insn1, op2, insn2, exec_type)
 		  used[j] |= 1 << regno ;
 		  if (flags & OPERAND_EVEN)
 		    used[j] |= 1 << (regno + 1);
+
+		  /* Auto inc/dec also modifies the register.  */
+		  if (op->operands[i+1] != 0
+		      && (d10v_operands[op->operands[i+1]].flags
+			  & (OPERAND_PLUS | OPERAND_MINUS)) != 0)
+		    mod[j] |= 1 << regno;
 		}
 	    }
 	}