ipa-utils.c (ipa_dfs_info): New field scc_no.

2011-06-01  Martin Jambor  <mjambor@suse.cz>

	* ipa-utils.c (ipa_dfs_info): New field scc_no.
	* ipa-utils.c (searchc): Set scc_no.

From-SVN: r174524

gcc/ChangeLog

 2011-06-01  Martin Jambor  <mjambor@suse.cz>
 
+	* ipa-utils.c (ipa_dfs_info): New field scc_no.
+	* ipa-utils.c (searchc): Set scc_no.
+
+2011-06-01  Martin Jambor  <mjambor@suse.cz>
+
 	* ipa-utils.c (searchc_env): New field allow_overwritable.
 	(searchc): do not ignore edges to overwritable nodes if indicated
 	by env->allow_overwritable.

gcc/ipa-utils.c

@@ -138,6 +138,7 @@ searchc (struct searchc_env* env, struct cgraph_node *v,
 	x = env->stack[--(env->stack_size)];
 	x_info = (struct ipa_dfs_info *) x->aux;
 	x_info->on_stack = false;
+	x_info->scc_no = v_info->dfn_number;
 
 	if (env->reduce)
 	  {

gcc/ipa-utils.h

@@ -26,6 +26,9 @@ along with GCC; see the file COPYING3.  If not see
 struct ipa_dfs_info {
   int dfn_number;
   int low_link;
+  /* This field will have the samy value for any two nodes in the same strongly
+     connected component.  */
+  int scc_no;
   bool new_node;
   bool on_stack;
   struct cgraph_node* next_cycle;