disabled show after showgraph, as it is (or was?) buggy

[libfirm] / ir / common / irtools.c

diff --git a/ir/common/irtools.c b/ir/common/irtools.c
index da8de90..37eae69 100644 (file)
--- a/ir/common/irtools.c
+++ b/ir/common/irtools.c
@@ -13,23 +13,23 @@
 # include "config.h"
 #endif
 
+#include "pset.h"
+
 #include <stdlib.h>
 #include "irnode_t.h"
 #include "irbackedge_t.h"
 #include "irtools.h"
+#include "irprintf.h"
 
 /* the famous clear_link implementation. */
 void firm_clear_link(ir_node *n, void *env) {
   set_irn_link(n, NULL);
 }
 
-/**
+/*
  * Copies a node to a new irg. The Ins of the new node point to
  * the predecessors on the old irg.  n->link points to the new node.
  *
- * @param n    The node to be copied
- * @param irg  the new irg
- *
  * Does NOT copy standard nodes like Start, End etc that are fixed
  * in an irg. Instead, the corresponding nodes of the new irg are returned.
  * Note further, that the new nodes have no block.
@@ -82,7 +82,7 @@ copy_irn_to_irg(ir_node *n, ir_graph *irg)
          op,
          get_irn_mode(n),
          get_irn_arity(n),
-         get_irn_in(n));
+         get_irn_in(n) + 1);
 
 
   /* Copy the attributes.  These might point to additional data.  If this
@@ -96,3 +96,40 @@ copy_irn_to_irg(ir_node *n, ir_graph *irg)
   if (is_Block(nn))
     nn->attr.block.irg = irg;
 }
+
+/*
+ * Creates an exact copy of a node.
+ * The copy resides in the same graph in the same block.
+ */
+ir_node *exact_copy(const ir_node *n) {
+  ir_graph *irg = get_irn_irg(n);
+  ir_node *res, *block = NULL;
+
+  if (is_no_Block(n))
+               block = get_nodes_block(n);
+
+  res = new_ir_node(get_irn_dbg_info(n),
+                    irg,
+                    block,
+                    get_irn_op(n),
+                    get_irn_mode(n),
+                    get_irn_arity(n),
+                    get_irn_in(n) + 1);
+
+
+  /* Copy the attributes.  These might point to additional data.  If this
+     was allocated on the old obstack the pointers now are dangling.  This
+     frees e.g. the memory of the graph_arr allocated in new_immBlock. */
+  copy_node_attr(n, res);
+  new_backedge_info(res);
+  return res;
+}
+
+void firm_pset_dump(pset *set)
+{
+       void *obj;
+
+       foreach_pset(set, obj) {
+               ir_fprintf(stderr, "%+F\n", obj);
+       }
+}