1 /* The codegenerator (transform FIRM Conv nodes into ppc FIRM) */
13 #include "iredges_t.h"
20 #include "../benode_t.h"
21 #include "bearch_ppc32_t.h"
23 #include "ppc32_nodes_attr.h"
24 //#include "../arch/archop.h" /* we need this for Min and Max nodes */
25 #include "ppc32_transform_conv.h"
26 #include "ppc32_new_nodes.h"
27 #include "ppc32_map_regs.h"
29 #include "gen_ppc32_regalloc_if.h"
39 ir_node *current_block;
45 * Conv walker initialization
47 void ppc32_init_conv_walk(void)
54 static ir_node *own_gen_convert_call(ppc32_transform_env_t *env, ir_node *op, const char *funcname,
55 ir_mode *from_mode, ir_mode *to_mode)
58 ir_entity *method_ent;
60 ir_node *call, *callee, *call_results;
64 method_type = new_type_method(new_id_from_str("convert_call_type"), 1, 1);
65 set_method_param_type(method_type, 0, new_type_primitive(new_id_from_str("conv_param"), from_mode));
66 set_method_res_type(method_type, 0, new_type_primitive(new_id_from_str("conv_result"), to_mode));
68 method_ent = new_entity(get_glob_type(), new_id_from_str(funcname), method_type);
69 callee = new_rd_SymConst_addr_ent(env->dbg, env->irg, method_ent, method_type);
70 call = new_rd_Call(env->dbg, env->irg, env->block, memory, callee, 1, in, method_type);
71 call_results = new_rd_Proj(env->dbg, env->irg, env->block, call, mode_T, pn_Call_T_result);
72 memory = new_rd_Proj(env->dbg, env->irg, env->block, call, mode_M, pn_Call_M_regular);
74 return new_rd_Proj(env->dbg, env->irg, env->block, call_results, to_mode, 0);
78 * Transforms a Conv node.
80 * @param mod the debug module
81 * @param block the block the new node should belong to
82 * @param node the ir Conv node
84 * @param mode node mode
85 * @return the created ppc Conv node
87 static ir_node *gen_Conv(ppc32_transform_env_t *env, ir_node *op) {
88 ir_mode *from_mode = get_irn_mode(get_irn_n(env->irn,0));
89 ir_mode *to_mode = env->mode;
90 modecode from_modecode=get_mode_modecode(from_mode);
91 modecode to_modecode=get_mode_modecode(to_mode);
93 switch(from_modecode){
95 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_D);
100 if (mode_is_signed(to_mode)) // Float to integer
102 ir_node *fctiw = new_rd_ppc32_fCtiw(env->dbg, env->irg, env->block, op, from_mode);
103 ir_node *stfd = new_rd_ppc32_Stfd(env->dbg, env->irg, env->block, get_irg_frame(env->irg),
105 ir_node *storememproj = new_rd_Proj(env->dbg, env->irg, env->block, stfd, mode_M, pn_Store_M);
106 ir_node *lwz = new_rd_ppc32_Lwz(env->dbg, env->irg, env->block, get_irg_frame(env->irg),
108 set_ppc32_frame_entity(stfd, memslot);
109 set_ppc32_offset_mode(stfd, ppc32_ao_Lo16); // TODO: only allows a 16-bit offset on stack
110 set_ppc32_frame_entity(lwz, memslot);
111 set_ppc32_offset_mode(stfd, ppc32_ao_Lo16); // TODO: only allows a 16-bit offset on stack
112 memory = new_rd_Proj(env->dbg, env->irg, env->block, lwz, mode_M, pn_Store_M);
113 res = new_rd_Proj(env->dbg, env->irg, env->block, lwz, to_mode, pn_Load_res);
118 res = own_gen_convert_call(env, op, "conv_double_to_unsigned_int", mode_D, mode_Iu);
127 return new_rd_Conv(env->dbg, env->irg, env->block, res, to_mode);
138 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_Is);
140 return own_gen_convert_call(env, op, (to_mode == mode_D) ? "conv_int_to_double" : "conv_int_to_single", mode_Is, to_mode);
145 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_Iu);
147 return own_gen_convert_call(env, op, (to_mode == mode_D) ? "conv_unsigned_int_to_double": "conv_unsigned_int_to_single", mode_Iu, to_mode);
155 fprintf(stderr, "Mode for Conv not supported: %s -> %s\n", get_mode_name(from_mode), get_mode_name(to_mode));
162 int search_from_node_in_block(ir_node *from, ir_node *to)
164 int n = get_irn_arity(from), i;
167 ir_node *pred = get_irn_n(from, i);
168 if(pred==to) return 1;
169 if(get_irn_n(pred, -1)==current_block)
171 if(search_from_node_in_block(pred, to)) return 1;
177 int nodes_dependency_order(ir_node **a, ir_node **b)
179 if(search_from_node_in_block(*a,*b)) return 1;
180 if(search_from_node_in_block(*b,*a)) return -1;
184 void finalize_block(ppc32_code_gen_t *cgenv)
187 ir_node *current_conv;
188 cw_block_attr *attr = current_block->link;
189 ppc32_transform_env_t tenv;
191 if(!attr->conv_count) return;
195 ir_type *frame_type = get_irg_frame_type(cgenv->irg);
196 memslot = frame_alloc_area(frame_type, get_mode_size_bytes(mode_D), 4, 0);
199 attr->convs = xmalloc(attr->conv_count * sizeof(ir_node *));
201 for (i = 0, current_conv = attr->first_conv; i < attr->conv_count; i++, current_conv = current_conv->link)
203 attr->convs[i] = current_conv;
206 qsort(attr->convs, attr->conv_count, sizeof(ir_node *),
207 (int (*)(const void *, const void *)) nodes_dependency_order);
209 tenv.block = current_block;
210 tenv.irg = current_ir_graph;
211 DEBUG_ONLY(tenv.mod = cgenv->mod;)
213 memory = get_irg_no_mem(current_ir_graph);
214 for(i = 0; i < attr->conv_count; i++)
216 tenv.dbg = get_irn_dbg_info(attr->convs[i]);
217 tenv.irn = attr->convs[i];
218 tenv.mode = get_irn_mode(attr->convs[i]);
220 exchange(attr->convs[i], gen_Conv(&tenv, get_Conv_op(attr->convs[i])));
224 void init_block(void)
226 cw_block_attr *attr = xmalloc(sizeof(cw_block_attr));
227 attr->first_conv = NULL;
228 attr->convs = NULL; /* attr->convs is set in finalize_block() */
229 attr->conv_count = 0;
230 current_block->link = attr;
234 * Constant generating code
243 /* Compares two (entity, tarval) combinations */
244 static int cmp_tv_ent(const void *a, const void *b, size_t len) {
245 const struct tv_ent *e1 = a;
246 const struct tv_ent *e2 = b;
248 return !(e1->tv == e2->tv);
251 /* Generates a SymConst node for a known FP const */
252 static ir_node *gen_fp_known_symconst(ppc32_transform_env_t *env, tarval *known_const) {
253 static set *const_set = NULL;
254 static ir_type *tp = NULL;
256 struct tv_ent *entry;
262 const_set = new_set(cmp_tv_ent, 10);
264 tp = new_type_primitive(new_id_from_str("const_double_t"), env->mode);
267 key.tv = known_const;
270 entry = set_insert(const_set, &key, sizeof(key), HASH_PTR(key.tv));
274 sprintf(buf, "const_%ld", get_irn_node_nr(env->irn));
275 ent = new_entity(get_glob_type(), new_id_from_str(buf), tp);
277 set_entity_ld_ident(ent, get_entity_ident(ent));
278 set_entity_visibility(ent, visibility_local);
279 set_entity_variability(ent, variability_constant);
280 set_entity_allocation(ent, allocation_static);
282 /* we create a new entity here: It's initialization must resist on the
284 rem = current_ir_graph;
285 current_ir_graph = get_const_code_irg();
286 cnst = new_Const(env->mode, key.tv);
287 current_ir_graph = rem;
289 set_atomic_ent_value(ent, cnst);
291 /* set the entry for hashmap */
295 return new_rd_SymConst_addr_ent(env->dbg, env->irg, ent, tp);
302 * @param env transformation environment
303 * @return the created ppc Const node
305 static ir_node *gen_Const(ppc32_transform_env_t *env) {
306 tarval *tv_const = get_Const_tarval(env->irn);
309 if (mode_is_float(env->mode))
310 constant = new_rd_ppc32_fConst(env->dbg, env->irg, env->block, env->mode);
312 constant = new_rd_ppc32_Const(env->dbg, env->irg, env->block, env->mode);
313 set_ppc32_constant_tarval(constant, tv_const);
318 * Transforms a SymConst.
320 * @param env transformation environment
321 * @return the created ppc SymConst node
323 static ir_node *gen_SymConst(ppc32_transform_env_t *env) {
325 symconst = new_rd_ppc32_SymConst(env->dbg, env->irg, env->block, env->mode);
326 set_ppc32_frame_entity(symconst, get_SymConst_entity(env->irn));
330 /*********************************************************
333 * _ __ ___ __ _ _ _ __ __| |_ __ ___ _____ _ __
334 * | '_ ` _ \ / _` | | '_ \ / _` | '__| \ \ / / _ \ '__|
335 * | | | | | | (_| | | | | | | (_| | | | |\ V / __/ |
336 * |_| |_| |_|\__,_|_|_| |_| \__,_|_| |_| \_/ \___|_|
338 *********************************************************/
343 * Transforms all conv nodes into ppc convs before abi
345 * @param node the firm node
346 * @param env the debug module
348 void ppc32_conv_walk(ir_node *node, void *env) {
349 ppc32_code_gen_t *cgenv = (ppc32_code_gen_t *)env;
350 opcode code = get_irn_opcode(node);
351 ppc32_transform_env_t tenv;
355 if(current_block != NULL)
356 finalize_block(cgenv);
358 current_block = node;
364 tenv.irg = current_ir_graph;
365 DEBUG_ONLY(tenv.mod = cgenv->mod;)
367 if (code == iro_Conv)
369 modecode from_mode=get_mode_modecode(get_irn_mode(get_irn_n(node,0)));
370 modecode to_mode=get_mode_modecode(get_irn_mode(node));
373 if(from_mode == to_mode) return;
374 if(from_mode == irm_F || from_mode == irm_D)
390 else if(to_mode == irm_F || to_mode == irm_D)
407 /* in Liste eintragen */
408 attr = get_irn_link(current_block);
409 set_irn_link(node, attr->first_conv);
410 attr->first_conv = node;
414 else if (code == iro_Call) {
416 ir_type *tp = get_Call_type(node);
418 int stack_alignment = 4;
420 for (i = get_Call_n_params(node) - 1; i >= 0; --i) {
421 ir_mode *mode = get_irn_mode(get_Call_param(node, i));
424 if (mode_is_reference(mode)) {
425 /* might be a compound parameter */
426 ptp = get_method_param_type(tp, i);
428 if (is_compound_type(ptp)) {
429 s = (get_type_size_bytes(ptp) + stack_alignment - 1) & -stack_alignment;
435 s = (get_mode_size_bytes(mode) + stack_alignment - 1) & -stack_alignment;
438 if ((unsigned) size > cgenv->area_size)
439 cgenv->area_size = size;
444 * Transforms all const nodes into ppc const nodes inside the using block
446 * @param node the firm node
447 * @param env the debug module
449 void ppc32_pretransform_walk(ir_node *node, void *env) {
450 ppc32_code_gen_t *cgenv = (ppc32_code_gen_t *)env;
451 opcode code = get_irn_opcode(node);
452 ppc32_transform_env_t tenv;
456 current_block = node;
460 tenv.irg = current_ir_graph;
461 DEBUG_ONLY(tenv.mod = cgenv->mod;)
463 if(code == iro_Const || code == iro_SymConst)
467 tenv.block = cgenv->start_succ_block;
469 tenv.mode = get_irn_mode(node);
470 tenv.dbg = get_irn_dbg_info(node);
472 if(code == iro_Const)
473 newconst = gen_Const(&tenv);
475 newconst = gen_SymConst(&tenv);
477 exchange(node, newconst);