backend can report back float point arithmetic mode

[libfirm] / include / libfirm / irouts.h

diff --git a/include/libfirm/irouts.h b/include/libfirm/irouts.h
index ef84bca..8b4fd95 100644 (file)
--- a/include/libfirm/irouts.h
+++ b/include/libfirm/irouts.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -39,28 +39,41 @@
    order of successors guaranteed.  Will return edges from block to floating
    nodes even if irgraph is in state "op_pin_state_floats". */
 /* returns the number of successors of the node: */
-int      get_irn_n_outs(ir_node *node);
+int      get_irn_n_outs(const ir_node *node);
 
-/** Get predecessor n */
-ir_node *get_irn_out(ir_node *node, int pos);
+/** Get the User of a node from the Def-Use edge at position pos. */
+ir_node *get_irn_out(const ir_node *def, int pos);
 
-/** Set predecessor n */
-void     set_irn_out(ir_node *node, int pos, ir_node *out);
+/**
+ * Get the User and its input position from the Def-Use edge of def
+ * at position pos.
+ */
+ir_node *get_irn_out_ex(const ir_node *def, int pos, int *in_pos);
+
+/**
+ * Set the User at position pos.
+ *
+ * @param def     the Def node
+ * @param pos     the number of the Def-Use edge tat is modified
+ * @param use     the Use node
+ * @param in_pos  the number of the corresponding Use-Def edge in the use node in array
+ */
+void     set_irn_out(ir_node *def, int pos, ir_node *use, int in_pos);
 
 /* Methods to iterate through the control flow graph. Iterate from 0 to
    i < get_Block_cfg_outs(block). No order of successors guaranteed. */
 
 /** Return the number of control flow successors, ignore keep-alives. */
-int      get_Block_n_cfg_outs(ir_node *node);
+int      get_Block_n_cfg_outs(const ir_node *node);
 
 /** Return the number of control flow successors, honor keep-alives. */
-int      get_Block_n_cfg_outs_ka(ir_node *node);
+int      get_Block_n_cfg_outs_ka(const ir_node *node);
 
 /** Access predecessor n, ignore keep-alives. */
-ir_node *get_Block_cfg_out(ir_node *node, int pos);
+ir_node *get_Block_cfg_out(const ir_node *node, int pos);
 
 /** Access predecessor n, honor keep-alives. */
-ir_node *get_Block_cfg_out_ka(ir_node *node, int pos);
+ir_node *get_Block_cfg_out_ka(const ir_node *node, int pos);
 
 /** Walks over the graph starting at node.  Walks also if graph is in state
    "outs_inconsistent".  Assumes current_ir_graph is set properly. */
@@ -75,6 +88,13 @@ void irg_out_block_walk(ir_node *node,
                         irg_walk_func *pre, irg_walk_func *post,
                         void *env);
 
+/**
+ * returns 1 if outs have been computed for a node, 0 otherwise.
+ *
+ *  this is usefull to detect newly created nodes that have no outs set yet
+ */
+int get_irn_outs_computed(const ir_node *node);
+
 /*------------------------------------------------------------------*/
 /* Building and Removing the out datastructure                      */
 /*------------------------------------------------------------------*/