2 * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief The codegenerator (transform FIRM Conv nodes into ppc FIRM)
23 * @author Moritz Kroll, Jens Mueller
31 #include "irgraph_t.h"
35 #include "iredges_t.h"
42 #include "../benode_t.h"
43 #include "bearch_ppc32_t.h"
45 #include "ppc32_nodes_attr.h"
46 //#include "../arch/archop.h" /* we need this for Min and Max nodes */
47 #include "ppc32_transform_conv.h"
48 #include "ppc32_new_nodes.h"
49 #include "ppc32_map_regs.h"
51 #include "gen_ppc32_regalloc_if.h"
61 ir_node *current_block;
67 * Conv walker initialization
69 void ppc32_init_conv_walk(void)
76 static ir_node *own_gen_convert_call(ppc32_transform_env_t *env, ir_node *op, const char *funcname,
77 ir_mode *from_mode, ir_mode *to_mode)
80 ir_entity *method_ent;
82 ir_node *call, *callee, *call_results;
86 method_type = new_type_method(new_id_from_str("convert_call_type"), 1, 1);
87 set_method_param_type(method_type, 0, new_type_primitive(new_id_from_str("conv_param"), from_mode));
88 set_method_res_type(method_type, 0, new_type_primitive(new_id_from_str("conv_result"), to_mode));
90 method_ent = new_entity(get_glob_type(), new_id_from_str(funcname), method_type);
91 callee = new_rd_SymConst_addr_ent(env->dbg, env->irg, method_ent, method_type);
92 call = new_rd_Call(env->dbg, env->irg, env->block, memory, callee, 1, in, method_type);
93 call_results = new_rd_Proj(env->dbg, env->irg, env->block, call, mode_T, pn_Call_T_result);
94 memory = new_rd_Proj(env->dbg, env->irg, env->block, call, mode_M, pn_Call_M_regular);
96 return new_rd_Proj(env->dbg, env->irg, env->block, call_results, to_mode, 0);
100 * Transforms a Conv node.
102 * @param mod the debug module
103 * @param block the block the new node should belong to
104 * @param node the ir Conv node
106 * @param mode node mode
107 * @return the created ppc Conv node
109 static ir_node *gen_Conv(ppc32_transform_env_t *env, ir_node *op) {
110 ir_mode *from_mode = get_irn_mode(get_irn_n(env->irn,0));
111 ir_mode *to_mode = env->mode;
112 modecode from_modecode=get_mode_modecode(from_mode);
113 modecode to_modecode=get_mode_modecode(to_mode);
115 switch(from_modecode){
117 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_D);
122 if (mode_is_signed(to_mode)) // Float to integer
124 ir_node *fctiw = new_rd_ppc32_fCtiw(env->dbg, env->irg, env->block, op, from_mode);
125 ir_node *stfd = new_rd_ppc32_Stfd(env->dbg, env->irg, env->block, get_irg_frame(env->irg),
127 ir_node *storememproj = new_rd_Proj(env->dbg, env->irg, env->block, stfd, mode_M, pn_Store_M);
128 ir_node *lwz = new_rd_ppc32_Lwz(env->dbg, env->irg, env->block, get_irg_frame(env->irg),
130 set_ppc32_frame_entity(stfd, memslot);
131 set_ppc32_offset_mode(stfd, ppc32_ao_Lo16); // TODO: only allows a 16-bit offset on stack
132 set_ppc32_frame_entity(lwz, memslot);
133 set_ppc32_offset_mode(stfd, ppc32_ao_Lo16); // TODO: only allows a 16-bit offset on stack
134 memory = new_rd_Proj(env->dbg, env->irg, env->block, lwz, mode_M, pn_Store_M);
135 res = new_rd_Proj(env->dbg, env->irg, env->block, lwz, to_mode, pn_Load_res);
140 res = own_gen_convert_call(env, op, "conv_double_to_unsigned_int", mode_D, mode_Iu);
149 return new_rd_Conv(env->dbg, env->irg, env->block, res, to_mode);
160 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_Is);
162 return own_gen_convert_call(env, op, (to_mode == mode_D) ? "conv_int_to_double" : "conv_int_to_single", mode_Is, to_mode);
167 op = new_rd_Conv(env->dbg, env->irg, env->block, op, mode_Iu);
169 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);
177 fprintf(stderr, "Mode for Conv not supported: %s -> %s\n", get_mode_name(from_mode), get_mode_name(to_mode));
184 int search_from_node_in_block(ir_node *from, ir_node *to)
186 int n = get_irn_arity(from), i;
189 ir_node *pred = get_irn_n(from, i);
190 if(pred==to) return 1;
191 if(get_irn_n(pred, -1)==current_block)
193 if(search_from_node_in_block(pred, to)) return 1;
199 int nodes_dependency_order(ir_node **a, ir_node **b)
201 if(search_from_node_in_block(*a,*b)) return 1;
202 if(search_from_node_in_block(*b,*a)) return -1;
206 void finalize_block(ppc32_code_gen_t *cgenv)
209 ir_node *current_conv;
210 cw_block_attr *attr = current_block->link;
211 ppc32_transform_env_t tenv;
213 if(!attr->conv_count) return;
217 ir_type *frame_type = get_irg_frame_type(cgenv->irg);
218 memslot = frame_alloc_area(frame_type, get_mode_size_bytes(mode_D), 4, 0);
221 attr->convs = xmalloc(attr->conv_count * sizeof(ir_node *));
223 for (i = 0, current_conv = attr->first_conv; i < attr->conv_count; i++, current_conv = current_conv->link)
225 attr->convs[i] = current_conv;
228 qsort(attr->convs, attr->conv_count, sizeof(ir_node *),
229 (int (*)(const void *, const void *)) nodes_dependency_order);
231 tenv.block = current_block;
232 tenv.irg = current_ir_graph;
233 DEBUG_ONLY(tenv.mod = cgenv->mod;)
235 memory = get_irg_no_mem(current_ir_graph);
236 for(i = 0; i < attr->conv_count; i++)
238 tenv.dbg = get_irn_dbg_info(attr->convs[i]);
239 tenv.irn = attr->convs[i];
240 tenv.mode = get_irn_mode(attr->convs[i]);
242 exchange(attr->convs[i], gen_Conv(&tenv, get_Conv_op(attr->convs[i])));
246 void init_block(void)
248 cw_block_attr *attr = xmalloc(sizeof(cw_block_attr));
249 attr->first_conv = NULL;
250 attr->convs = NULL; /* attr->convs is set in finalize_block() */
251 attr->conv_count = 0;
252 current_block->link = attr;
256 * Constant generating code
265 /* Compares two (entity, tarval) combinations */
266 static int cmp_tv_ent(const void *a, const void *b, size_t len) {
267 const struct tv_ent *e1 = a;
268 const struct tv_ent *e2 = b;
270 return !(e1->tv == e2->tv);
273 /* Generates a SymConst node for a known FP const */
274 static ir_node *gen_fp_known_symconst(ppc32_transform_env_t *env, tarval *known_const) {
275 static set *const_set = NULL;
276 static ir_type *tp = NULL;
278 struct tv_ent *entry;
284 const_set = new_set(cmp_tv_ent, 10);
286 tp = new_type_primitive(new_id_from_str("const_double_t"), env->mode);
289 key.tv = known_const;
292 entry = set_insert(const_set, &key, sizeof(key), HASH_PTR(key.tv));
296 sprintf(buf, "const_%ld", get_irn_node_nr(env->irn));
297 ent = new_entity(get_glob_type(), new_id_from_str(buf), tp);
299 set_entity_ld_ident(ent, get_entity_ident(ent));
300 set_entity_visibility(ent, visibility_local);
301 set_entity_variability(ent, variability_constant);
302 set_entity_allocation(ent, allocation_static);
304 /* we create a new entity here: It's initialization must resist on the
306 rem = current_ir_graph;
307 current_ir_graph = get_const_code_irg();
308 cnst = new_Const(env->mode, key.tv);
309 current_ir_graph = rem;
311 set_atomic_ent_value(ent, cnst);
313 /* set the entry for hashmap */
317 return new_rd_SymConst_addr_ent(env->dbg, env->irg, ent, tp);
324 * @param env transformation environment
325 * @return the created ppc Const node
327 static ir_node *gen_Const(ppc32_transform_env_t *env) {
328 tarval *tv_const = get_Const_tarval(env->irn);
331 if (mode_is_float(env->mode))
332 constant = new_rd_ppc32_fConst(env->dbg, env->irg, env->block, env->mode);
334 constant = new_rd_ppc32_Const(env->dbg, env->irg, env->block, env->mode);
335 set_ppc32_constant_tarval(constant, tv_const);
340 * Transforms a SymConst.
342 * @param env transformation environment
343 * @return the created ppc SymConst node
345 static ir_node *gen_SymConst(ppc32_transform_env_t *env) {
347 symconst = new_rd_ppc32_SymConst(env->dbg, env->irg, env->block, env->mode);
348 set_ppc32_frame_entity(symconst, get_SymConst_entity(env->irn));
352 /*********************************************************
355 * _ __ ___ __ _ _ _ __ __| |_ __ ___ _____ _ __
356 * | '_ ` _ \ / _` | | '_ \ / _` | '__| \ \ / / _ \ '__|
357 * | | | | | | (_| | | | | | | (_| | | | |\ V / __/ |
358 * |_| |_| |_|\__,_|_|_| |_| \__,_|_| |_| \_/ \___|_|
360 *********************************************************/
365 * Transforms all conv nodes into ppc convs before abi
367 * @param node the firm node
368 * @param env the debug module
370 void ppc32_conv_walk(ir_node *node, void *env) {
371 ppc32_code_gen_t *cgenv = (ppc32_code_gen_t *)env;
372 ir_opcode code = get_irn_opcode(node);
373 ppc32_transform_env_t tenv;
377 if(current_block != NULL)
378 finalize_block(cgenv);
380 current_block = node;
386 tenv.irg = current_ir_graph;
387 DEBUG_ONLY(tenv.mod = cgenv->mod;)
389 if (code == iro_Conv)
391 modecode from_mode=get_mode_modecode(get_irn_mode(get_irn_n(node,0)));
392 modecode to_mode=get_mode_modecode(get_irn_mode(node));
395 if(from_mode == to_mode) return;
396 if(from_mode == irm_F || from_mode == irm_D)
412 else if(to_mode == irm_F || to_mode == irm_D)
429 /* in Liste eintragen */
430 attr = get_irn_link(current_block);
431 set_irn_link(node, attr->first_conv);
432 attr->first_conv = node;
436 else if (code == iro_Call) {
438 ir_type *tp = get_Call_type(node);
440 int stack_alignment = 4;
442 for (i = get_Call_n_params(node) - 1; i >= 0; --i) {
443 ir_mode *mode = get_irn_mode(get_Call_param(node, i));
446 if (mode_is_reference(mode)) {
447 /* might be a compound parameter */
448 ptp = get_method_param_type(tp, i);
450 if (is_compound_type(ptp)) {
451 s = (get_type_size_bytes(ptp) + stack_alignment - 1) & -stack_alignment;
457 s = (get_mode_size_bytes(mode) + stack_alignment - 1) & -stack_alignment;
460 if ((unsigned) size > cgenv->area_size)
461 cgenv->area_size = size;
466 * Transforms all const nodes into ppc const nodes inside the using block
468 * @param node the firm node
469 * @param env the debug module
471 void ppc32_pretransform_walk(ir_node *node, void *env) {
472 ppc32_code_gen_t *cgenv = (ppc32_code_gen_t *)env;
473 ir_opcode code = get_irn_opcode(node);
474 ppc32_transform_env_t tenv;
478 current_block = node;
482 tenv.irg = current_ir_graph;
483 DEBUG_ONLY(tenv.mod = cgenv->mod;)
485 if(code == iro_Const || code == iro_SymConst)
489 tenv.block = cgenv->start_succ_block;
491 tenv.mode = get_irn_mode(node);
492 tenv.dbg = get_irn_dbg_info(node);
494 if(code == iro_Const)
495 newconst = gen_Const(&tenv);
497 newconst = gen_SymConst(&tenv);
499 exchange(node, newconst);