Don't run instrumented value profiler changes with afdo

The pass to transform gimple based on value profiling runs with autofdo
on, but currently every transformation fails. For indirect calls autofdo
does it on its own, and it doesn't suppport other value profiling. So don't
run this pass when autofdo is active. This also avoids bogus
dump file entries.

gcc/:

2016-07-13  Andi Kleen  <ak@linux.intel.com>

	* value-prof.c (gimple_value_profile_transformations): Don't run
	when auto_profile is on.

From-SVN: r238321

gcc/ChangeLog

 2016-07-13  Andi Kleen  <ak@linux.intel.com>
 
+	* value-prof.c (gimple_value_profile_transformations): Don't run
+	when auto_profile is on.
+
+2016-07-13  Andi Kleen  <ak@linux.intel.com>
+
 	* auto-profile.c (update_inlined_ind_target,
 	afdo_indirect_call): Print information to dump file.
 

gcc/value-prof.c

@@ -645,6 +645,12 @@ gimple_value_profile_transformations (void)
   basic_block bb;
   gimple_stmt_iterator gsi;
   bool changed = false;
+
+  /* Autofdo does its own transformations for indirect calls,
+     and otherwise does not support value profiling.  */
+  if (flag_auto_profile)
+    return false;
+
   FOR_EACH_BB_FN (bb, cfun)
     {
       for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))