X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbetranshlp.c;h=20551c2fdfb1c89634401b1ca8b4598d249687c2;hb=89dc24503c04139bb05504059b291d6d89f99661;hp=79e7421e648f518d8df145d61487ea90bf6f4a2a;hpb=acd5a14eb9f5db22065b247996de0bcb0961522b;p=libfirm

diff --git a/ir/be/betranshlp.c b/ir/be/betranshlp.c
index 79e7421e6..20551c2fd 100644
--- a/ir/be/betranshlp.c
+++ b/ir/be/betranshlp.c
@@ -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.
  *
@@ -65,8 +65,12 @@ int be_is_transformed(const ir_node *node) {
 }
 
 static INLINE ir_node *be_get_transformed_node(ir_node *old_node) {
-	assert(irn_visited(old_node));
-	return (ir_node*) get_irn_link(old_node);
+	if (irn_visited(old_node)) {
+		ir_node *new_node = get_irn_link(old_node);
+		assert(new_node != NULL);
+		return new_node;
+	}
+	return NULL;
 }
 
 void be_duplicate_deps(ir_node *old_node, ir_node *new_node) {
@@ -122,14 +126,11 @@ ir_node *be_duplicate_node(ir_node *node) {
  * Calls transformation function for given node and marks it visited.
  */
 ir_node *be_transform_node(ir_node *node) {
-	ir_node *new_node;
 	ir_op   *op;
+	ir_node *new_node = be_get_transformed_node(node);
 
-	if (irn_visited(node)) {
-		new_node = be_get_transformed_node(node);
-		assert(new_node != NULL);
+	if (new_node != NULL)
 		return new_node;
-	}
 
 	mark_irn_visited(node);
 	DEBUG_ONLY(be_set_transformed_node(node, NULL));
@@ -334,6 +335,7 @@ static ir_node *gen_Block(ir_node *node) {
 	ir_graph *irg             = current_ir_graph;
 	dbg_info *dbgi            = get_irn_dbg_info(node);
 	ir_node  *old_start_block = get_irn_n(env.old_anchor, anchor_start_block);
+	ir_node  *macroblock      = get_Block_MacroBlock(node);
 	ir_node  *block;
 
 	/*
@@ -349,10 +351,17 @@ static ir_node *gen_Block(ir_node *node) {
 	block = new_ir_node(dbgi, irg, NULL, get_irn_op(node), get_irn_mode(node),
 	                    get_irn_arity(node), get_irn_in(node) + 1);
 	copy_node_attr(node, block);
-
 #ifdef DEBUG_libfirm
 	block->node_nr = node->node_nr;
 #endif
+	if (node == macroblock) {
+		/* this node is a macroblock header */
+		set_irn_n(block, -1, block);
+	} else {
+		macroblock = be_transform_node(macroblock);
+		set_irn_n(block, -1, macroblock);
+	}
+
 	be_set_transformed_node(node, block);
 
 	/* put the preds in the worklist */