- const be_chordal_env_t *chordal_env;
- struct obstack obst;
- set *spill_ctxs;
- set *spills; /**< all spill_info_t's, which must be placed */
- pset *mem_phis; /**< set of all special spilled phis. allocated and freed seperately */
- decide_irn_t is_mem_phi; /**< callback func to decide if a phi needs special spilling */
- void *data; /**< data passed to all callbacks */
-};
-
-static int cmp_spillctx(const void *a, const void *b, size_t n) {
- const spill_ctx_t *p = a;
- const spill_ctx_t *q = b;
- return !(p->user == q->user && p->spilled == q->spilled);
-}
-
-static int cmp_spillinfo(const void *x, const void *y, size_t size) {
- const spill_info_t *xx = x;
- const spill_info_t *yy = y;
- return ! (xx->spilled_node == yy->spilled_node);
-}
-
-spill_env_t *be_new_spill_env(firm_dbg_module_t *dbg,
- const be_chordal_env_t *chordal_env,
- decide_irn_t is_mem_phi, void *data) {
-
- spill_env_t *env = malloc(sizeof(env[0]));
- env->spill_ctxs = new_set(cmp_spillctx, 1024);
- env->spills = new_set(cmp_spillinfo, 1024);
- env->cls = chordal_env->cls;
- env->dbg = dbg;
- env->is_mem_phi = is_mem_phi;
- env->data = data;
- env->chordal_env = chordal_env;
- obstack_init(&env->obst);
- return env;
-}
-
-void be_delete_spill_env(spill_env_t *senv) {
- del_set(senv->spill_ctxs);
- del_set(senv->spills);
- obstack_free(&senv->obst, NULL);
- free(senv);
-}
-
-static spill_ctx_t *be_get_spill_ctx(set *sc, ir_node *to_spill, ir_node *ctx_irn) {
- spill_ctx_t templ;
-
- templ.spilled = to_spill;
- templ.user = ctx_irn;
- templ.spill = NULL;
+} be_pre_spill_env_t;
+
+static void prepare_constr_insn(be_pre_spill_env_t *env, ir_node *node)
+{
+ const arch_register_class_t *cls = env->cls;
+ ir_node *block = get_nodes_block(node);
+ const ir_graph *irg = env->irg;
+ be_irg_t *birg = be_birg_from_irg(irg);
+ be_lv_t *lv = be_get_irg_liveness(irg);
+ unsigned *tmp = NULL;
+ unsigned *def_constr = NULL;
+ int arity = get_irn_arity(node);
+ ir_node *def;
+
+ int i, i2;
+
+ /* Insert a copy for constraint inputs attached to a value which can't
+ * fulfill the constraint
+ * (typical example: stack pointer as input to copyb)
+ * TODO: This really just checks precolored registers at the moment and
+ * ignores the general case of not matching in/out constraints
+ */
+ for (i = 0; i < arity; ++i) {
+ ir_node *op = get_irn_n(node, i);
+ const arch_register_req_t *req = arch_get_irn_register_req_in(node, i);
+ const arch_register_t *reg;
+ ir_node *copy;
+
+ if (req->cls != cls)
+ continue;
+ reg = arch_get_irn_register(op);
+ if (reg == NULL)
+ continue;
+
+ /* precolored with an ignore register (which is not a joker like
+ unknown/noreg) */
+ if ((reg->type & arch_register_type_joker) ||
+ rbitset_is_set(birg->allocatable_regs, reg->global_index))
+ continue;
+
+ if (! (req->type & arch_register_req_type_limited))
+ continue;
+ if (rbitset_is_set(req->limited, reg->index))
+ continue;
+
+ copy = be_new_Copy(block, op);
+ stat_ev_int("constr_copy", 1);
+ sched_add_before(node, copy);
+ set_irn_n(node, i, copy);
+ DBG((dbg, LEVEL_3, "inserting ignore arg copy %+F for %+F pos %d\n",
+ copy, node, i));
+ }