From 2e237e31a828aaf584afe3619dcf042245c46cfc Mon Sep 17 00:00:00 2001
From: kvigor <kvigor@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Fri, 4 May 2001 05:21:11 +0000
Subject: [PATCH] more precise noOverLap

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@772 4a8a32a2-be11-0410-ad9d-d568d2c75423
---
 src/ds390/ralloc.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/ds390/ralloc.c b/src/ds390/ralloc.c
index 3fab7c2d..782f7683 100644
--- a/src/ds390/ralloc.c
+++ b/src/ds390/ralloc.c
@@ -383,10 +383,15 @@ noOverLap (set * itmpStack, symbol * fsym)
   for (sym = setFirstItem (itmpStack); sym;
        sym = setNextItem (itmpStack))
     {
-      if (sym->liveTo >= fsym->liveFrom)
-	return 0;
+            // if sym starts before (or on) our end point
+            // and ends after (or on) our start point, 
+            // it is an overlap.
+	    if (sym->liveFrom <= fsym->liveTo &&
+		sym->liveTo   >= fsym->liveFrom)
+	    {
+	    	return 0;
+	    }
     }
-
   return 1;
 }
 
-- 
2.30.2