3 * ISA implementation for Firm IR nodes.
22 #include "irreflect.h"
24 #include "bearch_firm.h"
28 static arch_register_t datab_regs[N_REGS];
30 static arch_register_class_t reg_classes[] = {
31 { "datab", N_REGS, datab_regs },
34 static ir_op *op_push;
38 (sizeof(reg_classes) / sizeof(reg_classes[0]))
42 static void firm_init(void)
44 static struct obstack obst;
45 static int inited = 0;
54 for(k = 0; k < N_CLASSES; ++k) {
55 const arch_register_class_t *cls = ®_classes[k];
58 for(i = 0; i < cls->n_regs; ++i) {
62 arch_register_t *reg = (arch_register_t *) &cls->regs[i];
64 n = snprintf(buf, sizeof(buf), "r%d", i);
65 name = obstack_copy0(&obst, buf, n);
75 * Create some opcodes and types to let firm look a little
76 * bit more like real machines.
80 int push_opc = get_next_ir_opcode();
82 op_push = new_ir_op(push_opc, "Push",
83 op_pin_state_pinned, 0, oparity_binary, 0, 0, NULL);
85 sig = rflct_signature_allocate(1, 3);
86 rflct_signature_set_arg(sig, 0, 0, "Store", RFLCT_MC(Mem), 0, 0);
87 rflct_signature_set_arg(sig, 1, 0, "Block", RFLCT_MC(BB), 0, 0);
88 rflct_signature_set_arg(sig, 1, 1, "Store", RFLCT_MC(Mem), 0, 0);
89 rflct_signature_set_arg(sig, 1, 2, "Arg", RFLCT_MC(Datab), 0, 0);
91 rflct_new_opcode(push_opc, "Push", false);
92 rflct_opcode_add_signature(push_opc, sig);
97 int imm_opc = get_next_ir_opcode();
99 op_imm = new_ir_op(imm_opc, "Imm",
100 op_pin_state_pinned, 0, oparity_zero, 0, sizeof(imm_attr_t), NULL);
102 sig = rflct_signature_allocate(1, 1);
103 rflct_signature_set_arg(sig, 0, 0, "Imm", RFLCT_MC(Data), 0, 0);
104 rflct_signature_set_arg(sig, 1, 0, "Block", RFLCT_MC(BB), 0, 0);
105 rflct_new_opcode(imm_opc, "Imm", false);
106 rflct_opcode_add_signature(imm_opc, sig);
110 static int firm_get_n_reg_class(void)
115 static const arch_register_class_t *firm_get_reg_class(int i)
117 assert(i >= 0 && i < N_CLASSES);
118 return ®_classes[i];
121 static const arch_register_req_t firm_std_reg_req = {
122 arch_register_req_type_normal,
123 ®_classes[CLS_DATAB],
127 static const rflct_arg_t *get_arg(const ir_node *irn, int pos)
129 int sig = rflct_get_signature(irn);
130 const rflct_arg_t *args =
131 rflct_get_args(get_irn_opcode(irn), sig, arch_pos_is_in(pos));
132 return &args[arch_pos_get_index(pos)];
135 static const arch_register_req_t *
136 firm_get_irn_reg_req(const arch_irn_ops_t *self,
137 arch_register_req_t *req, const ir_node *irn, int pos)
139 if(is_firm_be_mode(get_irn_mode(irn)))
140 memcpy(req, &firm_std_reg_req, sizeof(*req));
147 static int firm_get_n_operands(const arch_irn_ops_t *self, const ir_node *irn, int in_out)
152 irn = get_Proj_pred(irn);
154 sig = rflct_get_signature(irn);
155 return rflct_get_args_count(get_irn_opcode(irn), sig, in_out >= 0);
158 struct irn_reg_assoc {
161 const arch_register_t *reg;
164 static int cmp_irn_reg_assoc(const void *a, const void *b, size_t len)
166 const struct irn_reg_assoc *x = a;
167 const struct irn_reg_assoc *y = b;
169 return !(x->irn == y->irn && x->pos == y->pos);
172 static struct irn_reg_assoc *get_irn_reg_assoc(const ir_node *irn, int pos)
174 static set *reg_set = NULL;
175 struct irn_reg_assoc templ;
179 reg_set = new_set(cmp_irn_reg_assoc, 1024);
184 hash = HASH_PTR(irn) + 7 * pos;
186 return set_insert(reg_set, &templ, sizeof(templ), hash);
189 static void firm_set_irn_reg(const arch_irn_ops_t *self, ir_node *irn,
190 int pos, const arch_register_t *reg)
192 struct irn_reg_assoc *assoc = get_irn_reg_assoc(irn, pos);
196 static const arch_register_t *firm_get_irn_reg(const arch_irn_ops_t *self,
197 const ir_node *irn, int pos)
199 struct irn_reg_assoc *assoc = get_irn_reg_assoc(irn, pos);
203 static arch_irn_class_t firm_classify(const arch_irn_ops_t *self, const ir_node *irn)
205 arch_irn_class_t res;
207 switch(get_irn_opcode(irn)) {
210 res = arch_irn_class_branch;
213 res = arch_irn_class_normal;
219 static arch_irn_flags_t firm_get_flags(const arch_irn_ops_t *self, const ir_node *irn)
221 arch_irn_flags_t res = arch_irn_flags_spillable;
223 if(get_irn_op(irn) == op_imm)
224 res |= arch_irn_flags_rematerializable;
226 switch(get_irn_opcode(irn)) {
236 res |= arch_irn_flags_rematerializable;
244 static const arch_irn_ops_t irn_ops = {
245 firm_get_irn_reg_req,
253 static const arch_irn_ops_t *firm_get_irn_ops(const arch_irn_handler_t *self,
259 const arch_irn_handler_t firm_irn_handler = {
263 static ir_node *new_Push(ir_graph *irg, ir_node *bl, ir_node *push, ir_node *arg)
268 return new_ir_node(NULL, irg, bl, op_push, mode_M, 2, ins);
271 static ir_node *new_Imm(ir_graph *irg, ir_node *bl, ir_node *cnst)
277 res = new_ir_node(NULL, irg, bl, op_imm, get_irn_mode(cnst), 0, ins);
278 attr = (imm_attr_t *) &res->attr;
280 switch (get_irn_opcode(cnst)) {
282 attr->tp = imm_Const;
283 attr->data.tv = get_Const_tarval(cnst);
286 attr->tp = imm_SymConst;
287 //attr->data.ent = get_SymConst_entity(cnst);
291 default: assert(0 && "Cannot create Imm for this opcode");
297 int is_Imm(const ir_node *irn) {
298 return get_irn_op(irn) == op_imm;
301 static void prepare_walker(ir_node *irn, void *data)
303 opcode opc = get_irn_opcode(irn);
305 /* A replacement for this node has already been computed. */
306 if(get_irn_link(irn))
309 if(opc == iro_Call) {
310 ir_node *bl = get_nodes_block(irn);
311 ir_graph *irg = get_irn_irg(bl);
313 ir_node *store = get_Call_mem(irn);
314 ir_node *ptr = get_Call_ptr(irn);
315 type *ct = get_Call_type(irn);
316 int np = get_Call_n_params(irn) > 0 ? 1 : 0;
326 store = new_Push(irg, bl, store, get_Call_param(irn, 0));
328 for(i = 1, n = get_Call_n_params(irn); i < n; ++i) {
329 store = new_Push(irg, bl, store, get_Call_param(irn, i));
332 snprintf(buf, sizeof(buf), "push_%s", get_type_name(ct));
334 n = get_method_n_ress(ct);
335 nt = new_type_method(new_id_from_str(buf), 0, n);
336 for(i = 0; i < n; ++i)
337 set_method_res_type(nt, i, get_method_res_type(ct, i));
339 nc = new_r_Call(irg, bl, store, ptr, 0, ins, nt);
341 set_irn_link(nc, nc);
346 static void localize_const_walker(ir_node *irn, void *data)
350 ir_node *bl = get_nodes_block(irn);
352 for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
353 ir_node *op = get_irn_n(irn, i);
354 opcode opc = get_irn_opcode(op);
357 || opc == iro_Unknown
358 || (opc == iro_SymConst /*&& get_SymConst_kind(op) == symconst_addr_ent*/)) {
359 ir_graph *irg = get_irn_irg(bl);
360 ir_node *imm_bl = is_Phi(irn) ? get_Block_cfgpred_block(bl, i) : bl;
362 ir_node *imm = new_Imm(irg, imm_bl, op);
363 set_irn_n(irn, i, imm);
369 static void clear_link(ir_node *irn, void *data)
371 set_irn_link(irn, NULL);
374 static void firm_prepare_graph(ir_graph *irg)
376 irg_walk_graph(irg, clear_link, localize_const_walker, NULL);
377 irg_walk_graph(irg, NULL, prepare_walker, NULL);
380 const arch_isa_if_t firm_isa = {
382 firm_get_n_reg_class,