X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeloopana.c;h=c62e5eff0cd7592d4eec6b6e8e443285a2f53682;hb=eba5516120eb38bcae5464e628aa0d2cb8708866;hp=65541aee32d11053ba92dd2b0da47fc2d0128fb8;hpb=f94d292525ff2eb4b35dfcb1977612aa9deca775;p=libfirm

diff --git a/ir/be/beloopana.c b/ir/be/beloopana.c
index 65541aee3..c62e5eff0 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.
  *
@@ -138,7 +138,7 @@ static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop,
 		}
 
 		pressure = MAX(pressure, son_pressure);
-   	}
+	}
 	DBG((dbg, LEVEL_1, "Done with loop %d, pressure %u for class %s\n", loop->loop_nr, pressure, cls->name));
 
 	/* update info in set */
@@ -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;
@@ -184,14 +189,18 @@ be_loopana_t *be_new_loop_pressure(be_irg_t *birg) {
 	be_loopana_t     *loop_ana = xmalloc(sizeof(*loop_ana));
 	ir_loop          *irg_loop = get_irg_loop(irg);
 	const arch_env_t *arch_env = be_get_birg_arch_env(birg);
-	const arch_isa_t *isa      = arch_env->isa;
 	int               i;
 
 	loop_ana->data = new_set(cmp_loop_info, 16);
 	loop_ana->birg = birg;
 
-	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);
+	/* construct control flow loop tree */
+	if (! (get_irg_loopinfo_state(irg) & loopinfo_cf_consistent)) {
+		construct_cf_backedges(irg);
+	}
+
+	for (i = arch_env_get_n_reg_class(arch_env) - 1; i >= 0; --i) {
+		const arch_register_class_t *cls = arch_env_get_reg_class(arch_env, i);
 		DBG((dbg, LEVEL_1, "\n=====================================================\n", cls->name));
 		DBG((dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name));
 		DBG((dbg, LEVEL_1, "=====================================================\n", cls->name));