# HG changeset patch
# User Gilles Duboscq <duboscq@ssw.jku.at>
# Date 1346238343 -7200
# Node ID 4535a87e8bf895d37fee37de1a9078e017391dd3
# Parent  6a51bc21630666eb821b8e6ea060a85c158ece5d
Fix for sameSign check and javadoc

diff -r 6a51bc216306 -r 4535a87e8bf8 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/type/IntegerStamp.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/type/IntegerStamp.java	Tue Aug 28 14:58:55 2012 +0200
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/type/IntegerStamp.java	Wed Aug 29 13:05:43 2012 +0200
@@ -200,8 +200,13 @@
         }
     }
 
+    /**
+     * Checks if the 2 stamps represent values of the same sign.
+     * Returns true if the two stamps are both positive of null or if they are both strictly negative
+     * @return true if the two stamps are both positive of null or if they are both strictly negative
+     */
     public static boolean sameSign(IntegerStamp s1, IntegerStamp s2) {
-        return s1.isPositive() && s2.isPositive() || s1.isNegative() && s2.isNegative();
+        return s1.isPositive() && s2.isPositive() || s1.isStrictlyNegative() && s2.isStrictlyNegative();
     }
 
 }