X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeloopana.c;h=37356e8520f0f69bbdc1db5c2fbc045f3b9b491a;hb=89dc24503c04139bb05504059b291d6d89f99661;hp=65541aee32d11053ba92dd2b0da47fc2d0128fb8;hpb=f94d292525ff2eb4b35dfcb1977612aa9deca775;p=libfirm

diff --git a/ir/be/beloopana.c b/ir/be/beloopana.c
index 65541aee3..37356e852 100644
--- a/ir/be/beloopana.c
+++ b/ir/be/beloopana.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.
  *
@@ -169,6 +169,11 @@ be_loopana_t *be_new_loop_pressure_cls(be_irg_t *birg,
 	DBG((dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name));
 	DBG((dbg, LEVEL_1, "=====================================================\n", cls->name));
 
+	/* construct control flow loop tree */
+	if (! (get_irg_loopinfo_state(irg) & loopinfo_cf_consistent)) {
+		construct_cf_backedges(irg);
+	}
+
 	be_compute_loop_pressure(loop_ana, get_irg_loop(irg), cls);
 
 	return loop_ana;
@@ -190,6 +195,11 @@ be_loopana_t *be_new_loop_pressure(be_irg_t *birg) {
 	loop_ana->data = new_set(cmp_loop_info, 16);
 	loop_ana->birg = birg;
 
+	/* construct control flow loop tree */
+	if (! (get_irg_loopinfo_state(irg) & loopinfo_cf_consistent)) {
+		construct_cf_backedges(irg);
+	}
+
 	for (i = arch_isa_get_n_reg_class(isa) - 1; i >= 0; --i) {
 		const arch_register_class_t *cls = arch_isa_get_reg_class(isa, i);
 		DBG((dbg, LEVEL_1, "\n=====================================================\n", cls->name));