X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeirgmod.h;h=54fa679137e7ad74cad6e135449a2f11c4fa4ea9;hb=36c6b99832fbea890115a89d3122d5399c7164a0;hp=6d5240c4e50c3b32bca834527e48ca5fbfbc6702;hpb=03ffa62ef4f525aa0c45dbe766a17bc94b161695;p=libfirm

diff --git a/ir/be/beirgmod.h b/ir/be/beirgmod.h
index 6d5240c4e..54fa67913 100644
--- a/ir/be/beirgmod.h
+++ b/ir/be/beirgmod.h
@@ -10,13 +10,105 @@
 #ifndef _BEIRGMOD_H
 #define _BEIRGMOD_H
 
+#include "firm_types.h"
+#include "pset.h"
+
+/*
+ * Forward type declaration.
+ */
 typedef struct _dom_front_info_t dom_front_info_t;
 
+/**
+ * Compute the dominance frontiers for a given graph.
+ * @param  irg The graphs.
+ * @return A pointer to the dominance frontier information.
+ */
 dom_front_info_t *be_compute_dominance_frontiers(ir_graph *irg);
+
+/**
+ * Get the dominance frontier of a block.
+ * @param info 	A pointer to the dominance frontier information.
+ * @param block The block whose dominance frontier you want.
+ * @return A set containing the all blocks in the dominance frontier of @p block.
+ */
 pset *be_get_dominance_frontier(dom_front_info_t *info, ir_node *block);
+
+/**
+ * Free some dominance frontier information.
+ * @param info Some dominance frontier information.
+ */
 void be_free_dominance_frontiers(dom_front_info_t *info);
 
-void be_introduce_copies(dom_front_info_t *info, ir_node *orig,
-    int n, ir_node *copy_nodes[]);
+/**
+ * Introduce several copies for one node.
+ *
+ * A copy in this context means, that you want to introduce several new
+ * abstract values (in Firm: nodes) for which you know, that they
+ * represent the same concrete value. This is the case if you
+ * - copy
+ * - spill and reload
+ * - re-materialize
+ * a value.
+ *
+ * This function reroutes all uses of the original value to the copies in the
+ * corresponding dominance subtrees and creates Phi functions if necessary.
+ *
+ * @param info		  Dominance frontier information.
+ * @param n           Length of nodes array.
+ * @param nodes       The nodes which shall represent the same SSA value.
+ * @param phis        A set to which all inserted Phis are added.
+ * @param ignore_uses A set of nodes probably using one of the nodes in @p nodes.
+ *                    Their usage will not adjusted. They remain untouched by this function.
+ */
+void be_ssa_constr_phis_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *phis, pset *ignore_uses);
+
+/**
+ * Same as be_ssa_constr_phis_ignore() but without the ignore set.
+ */
+void be_ssa_constr_phis(dom_front_info_t *info, int n, ir_node *nodes[], pset *phis);
+
+/**
+ * Same as be_ssa_constr_phis_ignore() but without the Phi set.
+ */
+void be_ssa_constr_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *ignore_uses);
+
+/**
+ * Same as be_ssa_constr_ignore() but with empty ignore set.
+ */
+void be_ssa_constr(dom_front_info_t *info, int n, ir_node *nodes[]);
+
+/**
+ * Same as be_ssa_constr_ignore() but with pset instead of array.
+ */
+void be_ssa_constr_set_ignore(dom_front_info_t *df, pset *nodes, pset *ignore_uses);
+
+/**
+ * Same as be_ssa_constr() but with pset instead of array.
+ */
+void be_ssa_constr_set(dom_front_info_t *info, pset *nodes);
+
+/**
+ * Same as be_ssa_constr_phis_ignore() but with set instead of array.
+ */
+void be_ssa_constr_set_phis_ignore(dom_front_info_t *info, pset *nodes, pset *phis, pset *ignore);
+
+/**
+ * Same as be_ssa_constr_phis_ignore() but without ignore set.
+ */
+void be_ssa_constr_set_phis(dom_front_info_t *info, pset *nodes, pset *phis);
+
+/**
+ * Insert a Perm which permutates all (non-ignore) live values of a given register class
+ * after a certain instruction.
+ * @param arch_env  The architecture environment.
+ * @param cls       The register class.
+ * @param dom_front Dominance frontier information.
+ * @param irn       The node to insert the Perm after.
+ * @return          The Perm or NULL if nothing was live before @p irn.
+ */
+ir_node *insert_Perm_after(const arch_env_t *arch_env,
+						   const arch_register_class_t *cls,
+						   dom_front_info_t *dom_front,
+						   ir_node *irn);
 
-#endif
+#endif /* _BEIRGMOD_H */