2 files changed, 7 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 72098089..fab7fef8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2020-07-13         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* mpfr.c (mpg_interpret): Small speedup. If do_itrace and opcode is
+	not one that's handled, return early.
+
 2020-07-12         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* mpfr.c (mpg_interpret): Make the instruction tracing more sane.
diff --git a/mpfr.c b/mpfr.c
index f581aba8..978fd683 100644
--- a/mpfr.c
+++ b/mpfr.c
@@ -1554,9 +1554,9 @@ mpg_interpret(INSTRUCTION **cp)
 		case Op_assign_exp:
 			fprintf(stderr, "++ %s: mpg_interpret\n", opcode2str(op));
 			fflush(stderr);
-			// fall thru to break
-		default:
 			break;
+		default:
+			return true;	/* unhandled */
 		}
 	}