Fixed a bug

diff --git a/ir/be/bechordal_main.c b/ir/be/bechordal_main.c
index 81743d6..8e598f5 100644 (file)
--- a/ir/be/bechordal_main.c
+++ b/ir/be/bechordal_main.c
@@ -209,13 +209,13 @@ static void be_ra_chordal_main(const be_main_env_t *main_env, ir_graph *irg)
        chordal_env.irg          = irg;
        chordal_env.dbg          = firm_dbg_register("firm.be.chordal");
        chordal_env.main_env     = main_env;
-       chordal_env.border_heads = pmap_create();
        chordal_env.dom_front    = be_compute_dominance_frontiers(irg);
 
        obstack_init(&chordal_env.obst);
 
        /* Perform the following for each register class. */
        for(j = 0, m = arch_isa_get_n_reg_class(isa); j < m; ++j) {
+               chordal_env.border_heads = pmap_create();
                chordal_env.cls = arch_isa_get_reg_class(isa, j);
 
                be_liveness(irg);
@@ -262,10 +262,11 @@ static void be_ra_chordal_main(const be_main_env_t *main_env, ir_graph *irg)
 
                be_ifg_free(chordal_env.ifg);
                be_numbering_done(irg);
+
+               pmap_destroy(chordal_env.border_heads);
        }
 
        be_free_dominance_frontiers(chordal_env.dom_front);
-       pmap_destroy(chordal_env.border_heads);
        obstack_free(&chordal_env.obst, NULL);
 }