-static ir_node *my_skip_proj(const ir_node *n) {
- while (is_Proj(n))
- n = get_Proj_pred(n);
- return (ir_node *)n;
-}
-
-/**
- * Return register requirements for a TEMPLATE node.
- * If the node returns a tuple (mode_T) then the proj's
- * will be asked for this information.
- */
-static const arch_register_req_t *TEMPLATE_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos) {
- const TEMPLATE_register_req_t *irn_req;
- long node_pos = pos == -1 ? 0 : pos;
- ir_mode *mode = get_irn_mode(irn);
- firm_dbg_module_t *mod = firm_dbg_register(DEBUG_MODULE);
-
- if (mode == mode_T || mode == mode_M) {
- DBG((mod, LEVEL_1, "ignoring mode_T, mode_M node %+F\n", irn));
- return NULL;
- }
-
- DBG((mod, LEVEL_1, "get requirements at pos %d for %+F ... ", pos, irn));
-
- if (is_Proj(irn)) {
- /* in case of a proj, we need to get the correct OUT slot */
- /* of the node corresponding to the proj number */
- if (pos == -1) {
- node_pos = TEMPLATE_translate_proj_pos(irn);
- }
- else {
- node_pos = pos;
- }
-
- irn = my_skip_proj(irn);
-
- DB((mod, LEVEL_1, "skipping Proj, going to %+F at pos %d ... ", irn, node_pos));
- }
-
- /* get requirements for our own nodes */
- if (is_TEMPLATE_irn(irn)) {
- if (pos >= 0) {
- irn_req = get_TEMPLATE_in_req(irn, pos);
- }
- else {
- irn_req = get_TEMPLATE_out_req(irn, node_pos);
- }
-
- DB((mod, LEVEL_1, "returning reqs for %+F at pos %d\n", irn, pos));
-
- memcpy(req, &(irn_req->req), sizeof(*req));
-
- if (arch_register_req_is(&(irn_req->req), should_be_same) ||
- arch_register_req_is(&(irn_req->req), should_be_different)) {
- assert(irn_req->pos >= 0 && "should be same/different constraint for in -> out NYI");
- req->other = get_irn_n(irn, irn_req->pos);
- }
- }
- /* get requirements for FIRM nodes */
- else {
- /* treat Phi like Const with default requirements */
- if (is_Phi(irn)) {
- DB((mod, LEVEL_1, "returning standard reqs for %+F\n", irn));
-
- if (mode_is_float(mode)) {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_floating_point.req), sizeof(*req));
- }
- else if (mode_is_int(mode) || mode_is_reference(mode)) {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose.req), sizeof(*req));
- }
- else if (mode == mode_T || mode == mode_M) {
- DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn));
- return NULL;
- }
- else {
- assert(0 && "unsupported Phi-Mode");
- }
- }
- else if ((get_irn_op(irn) == op_Return) && pos > 0) {
- /* pos == 0 is Memory -> no requirements */
- DB((mod, LEVEL_1, "giving return (%+F) requirements\n", irn));
-
- if (pos == 1) {
- /* pos == 1 is Stackpointer */
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose_r6.req), sizeof(*req));
- }
- else {
- if (mode_is_float(get_irn_mode(get_Return_res(irn, pos)))) {
- /* fp result */
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_floating_point_f0.req), sizeof(*req));
- }
- else {
- /* integer result, 64bit results are returned as two 32bit values */
- if (pos == 2) {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose_r0.req), sizeof(*req));
- }
- else {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose_r1.req), sizeof(*req));
- }
- }
- }
- }
- else {
- DB((mod, LEVEL_1, "returning NULL for %+F (node not supported)\n", irn));
- req = NULL;
- }
- }
-
- return req;