[PATCH] Fix PR49217

[Richard Guenther]

This fixes PR49217, we should use w, not node when visiting indirect
calls and refs.

Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk
and branch.

Richard.

2011-05-29  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/49217
        * ipa-pure-const.c (propagate_pure_const): Fix typos.

        * gcc.dg/torture/pr49217.c: New testcase.

Index: gcc/ipa-pure-const.c
===================================================================
*** gcc/ipa-pure-const.c        (revision 174393)
--- gcc/ipa-pure-const.c        (working copy)
*************** propagate_pure_const (void)
*** 1223,1229 ****
            break;
  
          /* Now process the indirect call.  */
!           for (ie = node->indirect_calls; ie; ie = ie->next_callee)
            {
              enum pure_const_state_e edge_state = IPA_CONST;
              bool edge_looping = false;
--- 1223,1229 ----
            break;
  
          /* Now process the indirect call.  */
!           for (ie = w->indirect_calls; ie; ie = ie->next_callee)
            {
              enum pure_const_state_e edge_state = IPA_CONST;
              bool edge_looping = false;
*************** propagate_pure_const (void)
*** 1246,1252 ****
            break;
  
          /* And finally all loads and stores.  */
!         for (i = 0; ipa_ref_list_reference_iterate (&node->ref_list, i, ref); 
i++)
            {
              enum pure_const_state_e ref_state = IPA_CONST;
              bool ref_looping = false;
--- 1246,1252 ----
            break;
  
          /* And finally all loads and stores.  */
!         for (i = 0; ipa_ref_list_reference_iterate (&w->ref_list, i, ref); 
i++)
            {
              enum pure_const_state_e ref_state = IPA_CONST;
              bool ref_looping = false;
Index: gcc/testsuite/gcc.dg/torture/pr49217.c
===================================================================
*** gcc/testsuite/gcc.dg/torture/pr49217.c      (revision 0)
--- gcc/testsuite/gcc.dg/torture/pr49217.c      (revision 0)
***************
*** 0 ****
--- 1,26 ----
+ /* { dg-do run } */
+ /* { dg-options "-fno-early-inlining" } */
+ 
+ extern void abort (void);
+ int i;
+ static void foo(void);
+ void __attribute__((noinline))
+ bar (void)
+ {
+   if (!i)
+     foo ();
+ }
+ static void
+ foo(void)
+ {
+   i = 1;
+   bar ();
+ }
+ int main()
+ {
+   i = 0;
+   bar();
+   if (i != 1)
+     abort ();
+   return 0;
+ }