From f2a77335b0a321d7a76ea2479770be3d7c291e11 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Sat, 21 Feb 1987 22:20:10 +0000
Subject: [PATCH] An attempt to make "erasereg" a little more efficient, as it
 seems often to be called to erase the condition codes.

---
 mach/proto/cg/reg.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mach/proto/cg/reg.c b/mach/proto/cg/reg.c
index 187c92482..3b394eca3 100644
--- a/mach/proto/cg/reg.c
+++ b/mach/proto/cg/reg.c
@@ -73,14 +73,19 @@ erasereg(regno) {
 	register struct reginfo *rp;
 	register int i;
 
-#if MAXMEMBERS==0
+#if MAXMEMBERS!=0
+	if (regno == 1)	 { /* condition codes */
+#endif
 	rp = &machregs[regno];
 	rp->r_contents.t_token = 0;
 	for (i=0;i<TOKENSIZE;i++)
 		rp->r_contents.t_att[i].aw = 0;
 
+#if MAXMEMBERS == 0
 	awayreg(regno);
+
 #else
+	} else
 	for (rp=machregs;rp<machregs+NREGS;rp++)
 		if (rp->r_clash[regno>>4]&(1<<(regno&017))) {
 			rp->r_contents.t_token = 0;
-- 
2.34.1