X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbecopyheur.c;h=58158c17a1099a7cb4a37c9f619b5200f20f74f0;hb=1eaf5821fab81ac32af068f5db303a8074764ffa;hp=fc26067bbba41966b3200e48d4a1b1b8efcb2112;hpb=bd4175dd9c290a499676ef53aa5c6c2106472c1d;p=libfirm

diff --git a/ir/be/becopyheur.c b/ir/be/becopyheur.c
index fc26067bb..58158c17a 100644
--- a/ir/be/becopyheur.c
+++ b/ir/be/becopyheur.c
@@ -390,11 +390,11 @@ static inline void qnode_max_ind_set(qnode_t *qn, const unit_t *ou) {
 	 * safe: node has no interference, hence it is in every max stable set.
 	 * unsafe: node has an interference
 	 */
-	safe = alloca((ou->node_count-1) * sizeof(*safe));
-	safe_costs = 0;
-	safe_count = 0;
-	unsafe = alloca((ou->node_count-1) * sizeof(*unsafe));
-	unsafe_costs = alloca((ou->node_count-1) * sizeof(*unsafe_costs));
+	safe         = ALLOCAN(ir_node*, ou->node_count - 1);
+	safe_costs   = 0;
+	safe_count   = 0;
+	unsafe       = ALLOCAN(ir_node*, ou->node_count - 1);
+	unsafe_costs = ALLOCAN(int,      ou->node_count - 1);
 	unsafe_count = 0;
 	for(i=1; i<ou->node_count; ++i) {
 		int is_safe = 1;
@@ -530,11 +530,13 @@ static inline void ou_insert_qnode(unit_t *ou, qnode_t *qn) {
  * nodes. (All other phi classes are reduced to this case.)
  */
 static void ou_optimize(unit_t *ou) {
-	int i;
-	qnode_t *curr = NULL, *tmp;
-	const arch_register_class_t *cls = ou->co->cls;
-	bitset_pos_t idx;
-	bitset_t *pos_regs = bitset_alloca(cls->n_regs);
+	qnode_t                     *curr = NULL;
+	qnode_t                     *tmp;
+	const arch_register_req_t   *req;
+	bitset_t const*              ignore;
+	bitset_pos_t                 n_regs;
+	bitset_pos_t                 idx;
+	int                          i;
 
 	DBG((dbg, LEVEL_1, "\tOptimizing unit:\n"));
 	for (i=0; i<ou->node_count; ++i)
@@ -543,16 +545,28 @@ static void ou_optimize(unit_t *ou) {
 	/* init queue */
 	INIT_LIST_HEAD(&ou->queue);
 
-	arch_get_allocatable_regs(ou->nodes[0], -1, pos_regs);
+	req     = arch_get_register_req_out(ou->nodes[0]);
+	ignore  = ou->co->cenv->ignore_colors;
+	n_regs  = req->cls->n_regs;
+	if (arch_register_req_is(req, limited)) {
+		rawbs_base_t const* limited = req->limited;
 
-	/* exclude ignore colors */
-	bitset_andnot(pos_regs, ou->co->cenv->ignore_colors);
+		for (idx = 0; idx != n_regs; ++idx) {
+			if (bitset_is_set(ignore, idx))
+				continue;
+			if (!rbitset_is_set(limited, idx))
+				continue;
 
-	assert(bitset_popcnt(pos_regs) != 0 && "No register is allowed for this node !!?");
+			ou_insert_qnode(ou, new_qnode(ou, idx));
+		}
+	} else {
+		for (idx = 0; idx != n_regs; ++idx) {
+			if (bitset_is_set(ignore, idx))
+				continue;
 
-	/* create new qnode */
-	bitset_foreach(pos_regs, idx)
-		ou_insert_qnode(ou, new_qnode(ou, idx));
+			ou_insert_qnode(ou, new_qnode(ou, idx));
+		}
+	}
 
 	/* search best */
 	for (;;) {