-/**
- * Author: Daniel Grund, Sebastian Hack
+/*
+ * Author: Daniel Grund, Sebastian Hack, Matthias Braun
* Date: 29.09.2005
* Copyright: (c) Universitaet Karlsruhe
* Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
*/
-
#ifndef BESPILL_H_
#define BESPILL_H_
*/
spill_env_t *be_new_spill_env(const be_chordal_env_t *chordal);
-/**
- * Marks a phi-node for spilling. So when reloading from this phi-node, not
- * only its value but the whole phi will be spilled.
- */
-void be_spill_phi(spill_env_t *env, ir_node *node);
-
/**
* Deletes a spill environment.
*/
void be_insert_spills_reloads(spill_env_t *senv);
/**
- * Computes the spill offsets for all spill nodes in the irg
+ * Marks a phi-node for spilling. So when reloading from this phi-node, not
+ * only its value but the whole phi will be spilled.
+ * This might place be_Copy nodes in predecessor blocks.
*/
-void be_compute_spill_offsets(be_chordal_env_t *cenv);
+void be_spill_phi(spill_env_t *env, ir_node *node);
+
+/**
+ * Returns the estimated costs if a node would get reloaded at a specific place
+ * (This looks whether the value already has a spill or if rematerialisation
+ * is possible)
+ */
+int be_get_reload_costs(spill_env_t *env, ir_node *to_spill, ir_node *before);
+
+int be_get_reload_costs_on_edge(spill_env_t *env, ir_node *to_spill, ir_node *block, int pos);
/**
* Sets the debug module of a spill environment.