fixed some minor bugs

[libfirm] / ir / be / becopyopt.h

diff --git a/ir/be/becopyopt.h b/ir/be/becopyopt.h
index cc0baa6..988df82 100644 (file)
--- a/ir/be/becopyopt.h
+++ b/ir/be/becopyopt.h
@@ -13,19 +13,18 @@
 #ifndef _BECOPYOPT_H
 #define _BECOPYOPT_H
 
-#include "irnode.h"
+#include "firm_types.h"
 #include "bechordal.h"
 
-
-typedef int(*cost_fct_t)(ir_node*, ir_node*, int);
-
-typedef struct _copy_opt_t copy_opt_t;
-
 /**
  * Has to be called during the firm init phase
  */
 void be_copy_opt_init(void);
 
+typedef int(*cost_fct_t)(ir_node*, ir_node*, int);
+
+typedef struct _copy_opt_t copy_opt_t;
+
 /**
  * Generate the problem. Collect all information and optimizable nodes.
  */
@@ -36,6 +35,18 @@ copy_opt_t *new_copy_opt(be_chordal_env_t *chordal_env, cost_fct_t get_costs);
  */
 void free_copy_opt(copy_opt_t *co);
 
+/**
+ * Checks if a node is optimizable, viz. has something to do with coalescing
+ * @param arch The architecture environment
+ * @param irn  The irn to check
+ */
+int co_is_optimizable_root(const copy_opt_t *co, ir_node *irn);
+
+/**
+ * Checks if the irn is a non-interfering argument of a node which 'is_optimizable'
+ */
+int co_is_optimizable_arg(const copy_opt_t *co, ir_node *irn);
+
 /**
  * Computes the costs of a copy according to loop depth
  * @param pos: the argument position of arg in the root arguments
@@ -44,16 +55,71 @@ void free_copy_opt(copy_opt_t *co);
 int co_get_costs_loop_depth(ir_node *root, ir_node* arg, int pos);
 
 /**
- * All costs equal 1. Using this will reduce the number of copies.
+ * All costs equal 1. Using this will reduce the _number_ of copies.
  * @return Must be >= 0 in all cases.
  */
 int co_get_costs_all_one(ir_node *root, ir_node* arg, int pos);
 
+
+
+
+/**
+ * Build internal optimization units structure
+ */
+void co_build_ou_structure(copy_opt_t *co);
+
+/**
+ * Frees the space used by the opt unit representation.
+ * Does NOT free the whole copyopt structure
+ */
+void co_free_ou_structure(copy_opt_t *co);
+
 /**
  * Solves the problem using a heuristic approach
  */
 int co_solve_heuristic(copy_opt_t *co);
 
+/**
+ * Returns the maximal costs possible, i.e. the costs if all
+ * pairs would be assigned different registers.
+ */
+int co_get_max_copy_costs(const copy_opt_t *co);
+
+/**
+ * Returns the inevitable costs, i.e. the costs of
+ * all copy pairs which interfere.
+ */
+int co_get_inevit_copy_costs(const copy_opt_t *co);
+
+/**
+ * Returns the current costs the copies are causing.
+ * The result includes inevitable costs and the costs
+ * of the copies regarding the current register allocation
+ */
+int co_get_copy_costs(const copy_opt_t *co);
+
+/**
+ * Returns a lower bound for the costs of copies in this ou.
+ * The result includes inevitable costs and the costs of a
+ * minimal costs caused by the nodes of the ou.
+ */
+int co_get_lower_bound(const copy_opt_t *co);
+
+
+
+
+
+/**
+ * Constructs another internal representation of the affinity edges
+ */
+void co_build_graph_structure(copy_opt_t *co);
+
+/**
+ * Frees the space used by the graph representation.
+ * Does NOT free the whole copyopt structure
+ */
+void co_free_graph_structure(copy_opt_t *co);
+
 /**
  * Solves the problem using mixed integer programming
  * @returns 1 iff solution state was optimal
@@ -67,8 +133,9 @@ int co_solve_ilp1(copy_opt_t *co, double time_limit);
 int co_solve_ilp2(copy_opt_t *co, double time_limit);
 
 /**
- * Compares different solutions of the same problem
+ * Checks if a node is optimizable, viz. has somthing to do with coalescing.
+ * Uses the graph representation
  */
-void co_compare_solvers(be_chordal_env_t *chordal_env);
+int co_gs_is_optimizable(copy_opt_t *co, ir_node *irn);
 
-#endif
+#endif /* _BECOPYOPT_H */