--- a/mx/commands.py	Wed Mar 14 21:54:42 2012 +0100
+++ b/mx/commands.py	Thu Mar 15 08:23:05 2012 +0100
@@ -751,9 +751,19 @@
 def gv(args):
     """run the Graal Visualizer"""
     with open(join(_graal_home, '.graal_visualizer.log'), 'w') as fp:
-        mx.log('[Graal Visualizer output is in ' + fp.name + ']')
+        mx.log('[Graal Visualizer log is in ' + fp.name + ']')
+        if not exists(join(_graal_home, 'visualizer', 'build.xml')):
+            mx.log('[This initial execution may take a while as the NetBeans platform needs to be downloaded]')
         mx.run(['ant', '-f', join(_graal_home, 'visualizer', 'build.xml'), '-l', fp.name, 'run'])
     
+def igv(args):
+    """run the Ideal Graph Visualizer"""
+    with open(join(_graal_home, '.ideal_graph_visualizer.log'), 'w') as fp:
+        mx.log('[Ideal Graph Visualizer log is in ' + fp.name + ']')
+        if not exists(join(_graal_home, 'src', 'share', 'tools', 'IdealGraphVisualizer', 'nbplatform')):
+            mx.log('[This initial execution may take a while as the NetBeans platform needs to be downloaded]')
+        mx.run(['ant', '-f', join(_graal_home, 'src', 'share', 'tools', 'IdealGraphVisualizer', 'build.xml'), '-l', fp.name, 'run'])
+
 def bench(args):
     """run benchmarks and parse their output for results
 
@@ -876,6 +886,7 @@
         'buildvms': [buildvms, '[-options]'],
         'clean': [clean, ''],
         'hsdis': [hsdis, '[att]'],
+        'igv' : [igv, ''],
         'intro': [intro, ''],
         'dacapo': [dacapo, '[[n] benchmark] [VM options|@DaCapo options]'],
         'scaladacapo': [scaladacapo, '[[n] benchmark] [VM options|@Scala DaCapo options]'],