BugFix: mode_b lowering might create new control flow (if ir_create_cond_set() is...

[libfirm] / ir / be / bespillslots.c

diff --git a/ir/be/bespillslots.c b/ir/be/bespillslots.c
index dd0f505..b3fa6f9 100644 (file)
--- a/ir/be/bespillslots.c
+++ b/ir/be/bespillslots.c
@@ -74,6 +74,8 @@ struct be_fec_env_t {
        affinity_edge_t      **affinity_edges;
        set                   *memperms;
        set_frame_entity_func  set_frame_entity;
+       bool                   at_begin;  /**< frame entities should be allocate at
+                                              the beginning of the stackframe */
 };
 
 /** Compare 2 affinity edges (used in quicksort) */
@@ -522,12 +524,10 @@ static memperm_t *get_memperm(be_fec_env_t *env, ir_node *block)
 
 static ir_entity* create_stack_entity(be_fec_env_t *env, spill_slot_t *slot)
 {
-       ir_graph *irg  = env->irg;
-       ir_type *frame = get_irg_frame_type(irg);
-       /* TODO: backend should be able to specify wether we want spill slots
-        * at begin or end of frame */
-       int        at_start = 1;
-       ir_entity *res = frame_alloc_area(frame, slot->size, slot->align, at_start);
+       ir_graph  *irg   = env->irg;
+       ir_type   *frame = get_irg_frame_type(irg);
+       ir_entity *res   = frame_alloc_area(frame, slot->size, slot->align,
+                                           env->at_begin);
 
        /* adjust size of the entity type... */
        ir_type *enttype = get_entity_type(res);
@@ -783,9 +783,11 @@ void be_free_frame_entity_coalescer(be_fec_env_t *env)
 }
 
 void be_assign_entities(be_fec_env_t *env,
-                        set_frame_entity_func set_frame_entity)
+                        set_frame_entity_func set_frame_entity,
+                        bool alloc_entities_at_begin)
 {
        env->set_frame_entity = set_frame_entity;
+       env->at_begin         = alloc_entities_at_begin;
 
        stat_ev_dbl("spillslots", set_count(env->spills));
 
@@ -800,7 +802,7 @@ void be_assign_entities(be_fec_env_t *env,
        create_memperms(env);
 }
 
-BE_REGISTER_MODULE_CONSTRUCTOR(be_init_spillslots);
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_spillslots)
 void be_init_spillslots(void)
 {
        FIRM_DBG_REGISTER(dbg, "firm.be.spillslots");