tree-tailcall.c (pass_tail_recursion): Use gate_tail_calls too.

	* tree-tailcall.c (pass_tail_recursion): Use gate_tail_calls too.

testsuite/
	* gcc.dg/sibcall-7.c: New test.
	* gcc.dg/tree-ssa/tailrecursion-1.c: Pass -foptimize-sibling-calls.
	* gcc.dg/tree-ssa/tailrecursion-2.c: Likewise.
	* gcc.dg/tree-ssa/tailrecursion-3.c: Likewise.
	* gcc.dg/tree-ssa/tailrecursion-4.c: Likewise.
	* gcc.dg/tree-ssa/tailrecursion-5.c: Likewise.

From-SVN: r113200

gcc/ChangeLog

+2006-04-23  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* tree-tailcall.c (pass_tail_recursion): Use gate_tail_calls too.
+
 2006-04-23  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/26534

gcc/testsuite/ChangeLog

+2006-04-23  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gcc.dg/sibcall-7.c: New test.
+	* gcc.dg/tree-ssa/tailrecursion-1.c: Pass -foptimize-sibling-calls.
+	* gcc.dg/tree-ssa/tailrecursion-2.c: Likewise.
+	* gcc.dg/tree-ssa/tailrecursion-3.c: Likewise.
+	* gcc.dg/tree-ssa/tailrecursion-4.c: Likewise.
+	* gcc.dg/tree-ssa/tailrecursion-5.c: Likewise.
+
 2006-04-23  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/26534

gcc/testsuite/gcc.dg/sibcall-7.c

+/* Simple check that tail recursive call optimization is also
+   controlled by -foptimize-sibling-calls.
+
+   Copyright (C) 2006 Free Software Foundation Inc.
+   Original test by Hans-Peter Nilsson  <hp@bitrange.com>  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fno-optimize-sibling-calls" } */
+
+
+extern void abort (void);
+
+extern void recurser_void (int);
+extern void track (int);
+
+int main (void)
+{
+  recurser_void (0);
+  return 0;
+}
+
+void recurser_void (int n)
+{
+  if (n == 0 || n == 7)
+    track (n);
+
+  if (n == 10)
+    return;
+
+  recurser_void (n + 1);
+}
+
+void *trackpoint;
+
+void track (int n)
+{
+  char stackpos[1];
+
+  if (n == 0)
+    trackpoint = stackpos;
+  else if (n != 7 || trackpoint == stackpos)
+    abort ();
+}

gcc/testsuite/gcc.dg/tree-ssa/tailrecursion-1.c

 /* { dg-do compile } */
-/* { dg-options "-O1 -fdump-tree-tailr-details" } */
+/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
 int
 t(int a)
 {

gcc/testsuite/gcc.dg/tree-ssa/tailrecursion-2.c

 /* { dg-do compile } */
-/* { dg-options "-O1 -fdump-tree-tailr-details" } */
+/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
 int
 t(char *a)
 {

gcc/testsuite/gcc.dg/tree-ssa/tailrecursion-3.c

 /* { dg-do compile } */
-/* { dg-options "-O1 -fdump-tree-tailr-details" } */
+/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
 int
 t(int a)
 {

gcc/testsuite/gcc.dg/tree-ssa/tailrecursion-4.c

 /* { dg-do compile } */
-/* { dg-options "-O1 -fdump-tree-tailr-details" } */
+/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
 int
 t(int a)
 {

gcc/testsuite/gcc.dg/tree-ssa/tailrecursion-5.c

 /* { dg-do run } */
-/* { dg-options "-O1 -fdump-tree-optimized" } */
+/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-optimized" } */
 
 extern void abort (void);
 extern void exit (int);

gcc/tree-tailcall.c

@@ -1017,7 +1017,7 @@ execute_tail_calls (void)
 struct tree_opt_pass pass_tail_recursion = 
 {
   "tailr",				/* name */
-  NULL,					/* gate */
+  gate_tail_calls,			/* gate */
   execute_tail_recursion,		/* execute */
   NULL,					/* sub */
   NULL,					/* next */