From: Matthias Braun <matze@braunis.de>
Date: Thu, 24 Feb 2011 18:17:02 +0000 (+0100)
Subject: do gigo earlier to avoid optimisations seeing bad inputs with wrong more
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=0814dbdb9e77ad4d1cde3ace8f264d3cc1fe995b;p=libfirm

do gigo earlier to avoid optimisations seeing bad inputs with wrong more
---

diff --git a/ir/ir/iropt.c b/ir/ir/iropt.c
index 2c1727040..0775c9290 100644
--- a/ir/ir/iropt.c
+++ b/ir/ir/iropt.c
@@ -6500,6 +6500,12 @@ ir_node *optimize_in_place_2(ir_node *n)
 	if (iro == iro_Deleted)
 		return n;
 
+	/* Remove nodes with dead (Bad) input.
+	   Run always for transformation induced Bads.  */
+	n = gigo(n);
+	if (is_Bad(n))
+		return n;
+
 	/* constant expression evaluation / constant folding */
 	if (get_opt_constant_folding()) {
 		/* neither constants nor Tuple values can be evaluated */
@@ -6545,10 +6551,6 @@ ir_node *optimize_in_place_2(ir_node *n)
 		(iro == iro_Proj))     /* Flags tested local. */
 		n = transform_node(n);
 
-	/* Remove nodes with dead (Bad) input.
-	   Run always for transformation induced Bads.  */
-	n = gigo(n);
-
 	/* Now we can verify the node, as it has no dead inputs any more. */
 	irn_verify(n);