# HG changeset patch
# User Gilles Duboscq <gilles.duboscq@oracle.com>
# Date 1307793531 -7200
# Node ID 53a8754c8eef6cc32bf1c8b8969de5a9006c294e
# Parent  2823897b2da23d1e4a0623ba065c2a10341b5d31
Canonicalize *Sub to *Add when possible

diff -r 2823897b2da2 -r 53a8754c8eef graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/IntegerSub.java
--- a/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/IntegerSub.java	Fri Jun 10 16:53:34 2011 +0200
+++ b/graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/IntegerSub.java	Sat Jun 11 13:58:51 2011 +0200
@@ -82,6 +82,12 @@
                 if (c == 0) {
                     return x;
                 }
+                if (kind == CiKind.Int) {
+                    return new IntegerAdd(kind, x, Constant.forInt((int) -c, graph), graph);
+                } else {
+                    assert kind ==  CiKind.Long;
+                    return new IntegerAdd(kind, x, Constant.forLong(-c, graph), graph);
+                }
             } else if (x.isConstant()) {
                 long c = x.asConstant().asLong();
                 if (c == 0) {