save func_ir text after distributed pass

Author: Ehsan Totoni

hpat/distributed.py

@@ -31,6 +31,7 @@
 
 # analysis data for debugging
 dist_analysis = None
+fir_text = None
 
 class DistributedPass(object):
     """analyze program and transfrom to distributed"""
@@ -81,8 +82,13 @@ def run(self):
         post_proc.run()
 
         # save data for debug and test
-        global dist_analysis
+        global dist_analysis, fir_text
         dist_analysis = self._dist_analysis
+        import io
+        str_io = io.StringIO()
+        self.func_ir.dump(str_io)
+        fir_text = str_io.getvalue()
+        str_io.close()
 
     def _run_dist_pass(self, blocks):
         topo_order = find_topo_order(blocks)