From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Thu, 27 Sep 2007 15:30:12 +0000 (+0000)
Subject: add assert to get_Block_MacroBlock()
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=c999d6d3c4fd3b2a275c2db77c8c4dffba70671a;p=libfirm

add assert to get_Block_MacroBlock()

[r15964]
---

diff --git a/ir/ir/irnode.c b/ir/ir/irnode.c
index 616211ae7..104c8d581 100644
--- a/ir/ir/irnode.c
+++ b/ir/ir/irnode.c
@@ -860,8 +860,13 @@ void set_Block_extbb(ir_node *block, ir_extblk *extblk) {
 
 /* returns the macro block header of a block. */
 ir_node *get_Block_MacroBlock(const ir_node *block) {
+	ir_node *mbh;
 	assert(is_Block(block));
-	return get_irn_n(block, -1);
+	mbh = get_irn_n(block, -1);
+	/* once macro block header is respected by all optimizations,
+	   this assert can be removed */
+	assert(mbh != NULL);
+	return mbh;
 }
 
 /* returns the graph of a Block. */