X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbepeephole.h;h=be93c224c8f499c1ec1701d7bb797ee9a8b4aa6b;hb=5474a1c188c9d59eea2c915515980cd9cbab58d8;hp=bc55a4bfb59b57f9338aef5b7d2dad0c56c3a5fb;hpb=d476ede5edf14912c9f405ffcda76bb21d542aef;p=libfirm

diff --git a/ir/be/bepeephole.h b/ir/be/bepeephole.h
index bc55a4bfb..be93c224c 100644
--- a/ir/be/bepeephole.h
+++ b/ir/be/bepeephole.h
@@ -21,7 +21,6 @@
  * @file
  * @brief       peephole optimisation framework
  * @author      Matthias Braun
- * @version     $Id$
  */
 #ifndef BEPEEPHOLE_H
 #define BEPEEPHOLE_H
@@ -29,20 +28,17 @@
 #include "beirg.h"
 #include "bearch.h"
 
-extern ir_node ***register_values;
+extern ir_node **register_values;
 
-static inline ir_node *be_peephole_get_value(unsigned regclass_idx,
-                                             unsigned register_idx)
+static inline ir_node *be_peephole_get_value(unsigned register_idx)
 {
-	return register_values[regclass_idx][register_idx];
+	return register_values[register_idx];
 }
 
 static inline ir_node *be_peephole_get_reg_value(const arch_register_t *reg)
 {
-	unsigned regclass_idx = arch_register_class_index(arch_register_get_class(reg));
-	unsigned register_idx = arch_register_get_index(reg);
-
-	return be_peephole_get_value(regclass_idx, register_idx);
+	unsigned register_idx = reg->global_index;
+	return be_peephole_get_value(register_idx);
 }
 
 /**
@@ -76,6 +72,17 @@ ir_node *be_peephole_IncSP_IncSP(ir_node *node);
 
 bool be_has_only_one_user(ir_node *node);
 
+/**
+ * In a scheduled program with registers assigned,
+ * checks wether @p node can be moved before @p before without changing program
+ * semantics.
+ *
+ * Note: It is allowed to use this function without being in a peephole
+ * optimization phase.
+ */
+bool be_can_move_before(ir_heights_t *heights, const ir_node *node,
+                        const ir_node *before);
+
 /**
  * Do peephole optimisations. It traverses the schedule of all blocks in
  * backward direction. The register_values variable indicates which (live)