From: ceriel <none@none>
Date: Fri, 1 Mar 1991 14:54:43 +0000 (+0000)
Subject: Prevent superfluous label generation
X-Git-Tag: release-5-5~1214
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=e1b6ddca2cf4780fc3ccae23f3e02e8dabeff228;p=ack.git

Prevent superfluous label generation
---

diff --git a/util/ego/cj/cj.c b/util/ego/cj/cj.c
index 56bbe4195..12f897624 100644
--- a/util/ego/cj/cj.c
+++ b/util/ego/cj/cj.c
@@ -181,15 +181,24 @@ STATIC jump_cross(l1,l2,b1,b2)
 
 	/* Now adjust the EM text */
 	l = PREV(l1);
+	while (l && INSTR(l) == op_lab) {
+		l1 = l;
+		l = PREV(l);
+	}
 	if (l == (line_p) 0) {
 		b1->b_start = (line_p) 0;
 	} else {
 		l->l_next = (line_p) 0;
 	}
-	l = newline(OPINSTRLAB);
-	l->l_instr = op_lab;
-	INSTRLAB(l) = freshlabel();
-	DLINK(l,l1);
+	if (INSTR(l1) == op_lab) {
+		l = l1;
+	}
+	else {
+		l = newline(OPINSTRLAB);
+		l->l_instr = op_lab;
+		INSTRLAB(l) = freshlabel();
+		DLINK(l,l1);
+	}
 	b->b_start = l;
 	for (l = l2; INSTR(l) != op_bra; l = l->l_next) {
 		assert (l != (line_p) 0);