From a286e7dcdb4c41b2165c64fc85ed9eb021c08bc0 Mon Sep 17 00:00:00 2001
From: Matthias Braun <matze@braunis.de>
Date: Tue, 18 Sep 2007 15:06:49 +0000
Subject: [PATCH] never move around flag mofying nodes

[r15864]
---
 ir/be/belower.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ir/be/belower.c b/ir/be/belower.c
index 3cbeec92a..7ba31cfbe 100644
--- a/ir/be/belower.c
+++ b/ir/be/belower.c
@@ -940,6 +940,11 @@ found_front:
 		bitset_set(keep, nr);
 		if (!is_Proj(op) && get_nodes_block(op) == bl
 				&& (op == frontier || sched_comes_after(frontier, op))) {
+			/* don't move around nodes that modifies the flags */
+			if (arch_irn_is(aenv, op, modify_flags)) {
+				continue;
+			}
+
 			for (i = get_irn_arity(op) - 1; i >= 0; --i) {
 				ir_node *opop = get_irn_n(op, i);
 				if (!arch_irn_consider_in_reg_alloc(aenv, cls, opop)) {
-- 
2.20.1