[google] cprop pass's gate function cleanup

[davidxl, 2011-06-09 20:28:49]

The patch fixed the breakage due to the r174848 backport to google/main --
the gate function for cprop is in a different file from trunk.

2011-06-09  David Li  <davidxl@google.com>

	* gcse.c (gate_rtl_cprop): Gate cleanup
	(execute_rtl_cprop): Gate cleanup

Index: gcse.c
===================================================================
--- gcse.c	(revision 174852)
+++ gcse.c	(working copy)
@@ -5309,15 +5309,17 @@ one_cprop_pass (void)
 static bool
 gate_rtl_cprop (void)
 {
-  return optimize > 0 && flag_gcse
-    && !cfun->calls_setjmp
-    && dbg_cnt (cprop);
+  return optimize > 0 && flag_gcse;
 }
 
 static unsigned int
 execute_rtl_cprop (void)
 {
   int changed;
+  if (cfun->calls_setjmp
+      || !dbg_cnt (cprop))
+    return 0;
+
   delete_unreachable_blocks ();
   df_set_flags (DF_LR_RUN_DCE);
   df_analyze ();

--
This patch is available for review at http://codereview.appspot.com/4572055