X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbepeephole.h;h=def4b8ed19dae9f791d1ed3adb8802f624d8262b;hb=d300330b1e6df8c8914b8fb70cf38ee1c8ca2634;hp=86fe44f129673499b425ab23d5a4f3a883f72aee;hpb=b70b1794d3fe3c289fd988aacbb567761186cd16;p=libfirm

diff --git a/ir/be/bepeephole.h b/ir/be/bepeephole.h
index 86fe44f12..def4b8ed1 100644
--- a/ir/be/bepeephole.h
+++ b/ir/be/bepeephole.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.
  *
@@ -47,10 +47,21 @@ static INLINE ir_node *be_peephole_get_reg_value(const arch_register_t *reg)
 }
 
 /**
- * Datatype of the generic op handler for optimisation. If it exchanged node
- * with something else, then it must return the new node, otherwise NULL.
+ * Datatype of the generic op handler for optimisation.
  */
-typedef ir_node*(*peephole_opt_func) (ir_node *node);
+typedef void (*peephole_opt_func) (ir_node *node);
+
+/**
+ * must be called from peephole optimisations before a node is exchanged,
+ * so bepeephole can update it's internal state.
+ */
+void be_peephole_before_exchange(const ir_node *old_node, ir_node *new_node);
+
+/**
+ * must be called from peephole optimisations after a node is exchanged,
+ * so bepeephole can update it's internal state.
+ */
+void be_peephole_after_exchange(ir_node *new_node);
 
 /**
  * Do peephole optimisations. It traverses the schedule of all blocks in