passes.c (execute_one_pass): Handle going out of SSA w/o hitting pass_startwith.

2016-12-20  Richard Biener  <rguenther@suse.de>

	* passes.c (execute_one_pass): Handle going out of SSA w/o
	hitting pass_startwith.  Handle skipping property providers.

	* gcc.dg/gimplefe-19.c: New testcase.

From-SVN: r243822

gcc/ChangeLog

+2016-12-20  Richard Biener  <rguenther@suse.de>
+
+	* passes.c (execute_one_pass): Handle going out of SSA w/o
+	hitting pass_startwith.  Handle skipping property providers.
+
 2016-12-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/78694

gcc/passes.c

@@ -2321,7 +2321,10 @@ execute_one_pass (opt_pass *pass)
       && (cfun->curr_properties & PROP_ssa))
     {
       size_t namelen = strlen (pass->name);
-      if (! strncmp (pass->name, cfun->pass_startwith, namelen))
+      /* We have to at least start when we leave SSA.  */
+      if (pass->properties_destroyed & PROP_ssa)
+	cfun->pass_startwith = NULL;
+      else if (! strncmp (pass->name, cfun->pass_startwith, namelen))
 	{
 	  /* The following supports starting with the Nth invocation
 	     of a pass (where N does not necessarily is equal to the
@@ -2338,6 +2341,9 @@ execute_one_pass (opt_pass *pass)
 	      return true;
 	    }
 	}
+      /* And also run any property provider.  */
+      else if (pass->properties_provided != 0)
+	;
       else
 	return true;
     }

gcc/testsuite/ChangeLog

+2016-12-20  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/gimplefe-19.c: New testcase.
+
 2016-12-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/78694

gcc/testsuite/gcc.dg/gimplefe-19.c

+/* { dg-do compile } */
+/* { dg-options "-fgimple" } */
+
+void __GIMPLE (startwith ("ccp1")) foo ()
+{
+  return;
+}