1 /* 2 * Copyright 2010 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 #include <string.h> 25 #include "main/compiler.h" 26 #include "ir.h" 27 #include "compiler/glsl_types.h" 28 #include "util/hash_table.h" 29 30 ir_rvalue * 31 ir_rvalue::clone(void *mem_ctx, struct hash_table *) const 32 { 33 /* The only possible instantiation is the generic error value. */ 34 return error_value(mem_ctx); 35 } 36 37 /** 38 * Duplicate an IR variable 39 */ 40 ir_variable * 41 ir_variable::clone(void *mem_ctx, struct hash_table *ht) const 42 { 43 ir_variable *var = new(mem_ctx) ir_variable(this->type, this->name, 44 (ir_variable_mode) this->data.mode); 45 46 var->data.max_array_access = this->data.max_array_access; 47 if (this->is_interface_instance()) { 48 var->u.max_ifc_array_access = 49 rzalloc_array(var, int, this->interface_type->length); 50 memcpy(var->u.max_ifc_array_access, this->u.max_ifc_array_access, 51 this->interface_type->length * sizeof(unsigned)); 52 } 53 54 memcpy(&var->data, &this->data, sizeof(var->data)); 55 56 if (this->get_state_slots()) { 57 ir_state_slot *s = var->allocate_state_slots(this->get_num_state_slots()); 58 memcpy(s, this->get_state_slots(), 59 sizeof(s[0]) * var->get_num_state_slots()); 60 } 61 62 if (this->constant_value) 63 var->constant_value = this->constant_value->clone(mem_ctx, ht); 64 65 if (this->constant_initializer) 66 var->constant_initializer = 67 this->constant_initializer->clone(mem_ctx, ht); 68 69 var->interface_type = this->interface_type; 70 71 if (ht) 72 _mesa_hash_table_insert(ht, (void *)const_cast<ir_variable *>(this), var); 73 74 return var; 75 } 76 77 ir_swizzle * 78 ir_swizzle::clone(void *mem_ctx, struct hash_table *ht) const 79 { 80 return new(mem_ctx) ir_swizzle(this->val->clone(mem_ctx, ht), this->mask); 81 } 82 83 ir_return * 84 ir_return::clone(void *mem_ctx, struct hash_table *ht) const 85 { 86 ir_rvalue *new_value = NULL; 87 88 if (this->value) 89 new_value = this->value->clone(mem_ctx, ht); 90 91 return new(mem_ctx) ir_return(new_value); 92 } 93 94 ir_discard * 95 ir_discard::clone(void *mem_ctx, struct hash_table *ht) const 96 { 97 ir_rvalue *new_condition = NULL; 98 99 if (this->condition != NULL) 100 new_condition = this->condition->clone(mem_ctx, ht); 101 102 return new(mem_ctx) ir_discard(new_condition); 103 } 104 105 ir_loop_jump * 106 ir_loop_jump::clone(void *mem_ctx, struct hash_table *ht) const 107 { 108 (void)ht; 109 110 return new(mem_ctx) ir_loop_jump(this->mode); 111 } 112 113 ir_if * 114 ir_if::clone(void *mem_ctx, struct hash_table *ht) const 115 { 116 ir_if *new_if = new(mem_ctx) ir_if(this->condition->clone(mem_ctx, ht)); 117 118 foreach_in_list(ir_instruction, ir, &this->then_instructions) { 119 new_if->then_instructions.push_tail(ir->clone(mem_ctx, ht)); 120 } 121 122 foreach_in_list(ir_instruction, ir, &this->else_instructions) { 123 new_if->else_instructions.push_tail(ir->clone(mem_ctx, ht)); 124 } 125 126 return new_if; 127 } 128 129 ir_loop * 130 ir_loop::clone(void *mem_ctx, struct hash_table *ht) const 131 { 132 ir_loop *new_loop = new(mem_ctx) ir_loop(); 133 134 foreach_in_list(ir_instruction, ir, &this->body_instructions) { 135 new_loop->body_instructions.push_tail(ir->clone(mem_ctx, ht)); 136 } 137 138 return new_loop; 139 } 140 141 ir_call * 142 ir_call::clone(void *mem_ctx, struct hash_table *ht) const 143 { 144 ir_dereference_variable *new_return_ref = NULL; 145 if (this->return_deref != NULL) 146 new_return_ref = this->return_deref->clone(mem_ctx, ht); 147 148 exec_list new_parameters; 149 150 foreach_in_list(ir_instruction, ir, &this->actual_parameters) { 151 new_parameters.push_tail(ir->clone(mem_ctx, ht)); 152 } 153 154 return new(mem_ctx) ir_call(this->callee, new_return_ref, &new_parameters); 155 } 156 157 ir_expression * 158 ir_expression::clone(void *mem_ctx, struct hash_table *ht) const 159 { 160 ir_rvalue *op[ARRAY_SIZE(this->operands)] = { NULL, }; 161 unsigned int i; 162 163 for (i = 0; i < get_num_operands(); i++) { 164 op[i] = this->operands[i]->clone(mem_ctx, ht); 165 } 166 167 return new(mem_ctx) ir_expression(this->operation, this->type, 168 op[0], op[1], op[2], op[3]); 169 } 170 171 ir_dereference_variable * 172 ir_dereference_variable::clone(void *mem_ctx, struct hash_table *ht) const 173 { 174 ir_variable *new_var; 175 176 if (ht) { 177 hash_entry *entry = _mesa_hash_table_search(ht, this->var); 178 new_var = entry ? (ir_variable *) entry->data : this->var; 179 } else { 180 new_var = this->var; 181 } 182 183 return new(mem_ctx) ir_dereference_variable(new_var); 184 } 185 186 ir_dereference_array * 187 ir_dereference_array::clone(void *mem_ctx, struct hash_table *ht) const 188 { 189 return new(mem_ctx) ir_dereference_array(this->array->clone(mem_ctx, ht), 190 this->array_index->clone(mem_ctx, 191 ht)); 192 } 193 194 ir_dereference_record * 195 ir_dereference_record::clone(void *mem_ctx, struct hash_table *ht) const 196 { 197 return new(mem_ctx) ir_dereference_record(this->record->clone(mem_ctx, ht), 198 this->field); 199 } 200 201 ir_texture * 202 ir_texture::clone(void *mem_ctx, struct hash_table *ht) const 203 { 204 ir_texture *new_tex = new(mem_ctx) ir_texture(this->op); 205 new_tex->type = this->type; 206 207 new_tex->sampler = this->sampler->clone(mem_ctx, ht); 208 if (this->coordinate) 209 new_tex->coordinate = this->coordinate->clone(mem_ctx, ht); 210 if (this->projector) 211 new_tex->projector = this->projector->clone(mem_ctx, ht); 212 if (this->shadow_comparator) { 213 new_tex->shadow_comparator = this->shadow_comparator->clone(mem_ctx, ht); 214 } 215 216 if (this->offset != NULL) 217 new_tex->offset = this->offset->clone(mem_ctx, ht); 218 219 switch (this->op) { 220 case ir_tex: 221 case ir_lod: 222 case ir_query_levels: 223 case ir_texture_samples: 224 case ir_samples_identical: 225 break; 226 case ir_txb: 227 new_tex->lod_info.bias = this->lod_info.bias->clone(mem_ctx, ht); 228 break; 229 case ir_txl: 230 case ir_txf: 231 case ir_txs: 232 new_tex->lod_info.lod = this->lod_info.lod->clone(mem_ctx, ht); 233 break; 234 case ir_txf_ms: 235 new_tex->lod_info.sample_index = this->lod_info.sample_index->clone(mem_ctx, ht); 236 break; 237 case ir_txd: 238 new_tex->lod_info.grad.dPdx = this->lod_info.grad.dPdx->clone(mem_ctx, ht); 239 new_tex->lod_info.grad.dPdy = this->lod_info.grad.dPdy->clone(mem_ctx, ht); 240 break; 241 case ir_tg4: 242 new_tex->lod_info.component = this->lod_info.component->clone(mem_ctx, ht); 243 break; 244 } 245 246 return new_tex; 247 } 248 249 ir_assignment * 250 ir_assignment::clone(void *mem_ctx, struct hash_table *ht) const 251 { 252 ir_rvalue *new_condition = NULL; 253 254 if (this->condition) 255 new_condition = this->condition->clone(mem_ctx, ht); 256 257 ir_assignment *cloned = 258 new(mem_ctx) ir_assignment(this->lhs->clone(mem_ctx, ht), 259 this->rhs->clone(mem_ctx, ht), 260 new_condition); 261 cloned->write_mask = this->write_mask; 262 return cloned; 263 } 264 265 ir_function * 266 ir_function::clone(void *mem_ctx, struct hash_table *ht) const 267 { 268 ir_function *copy = new(mem_ctx) ir_function(this->name); 269 270 copy->is_subroutine = this->is_subroutine; 271 copy->subroutine_index = this->subroutine_index; 272 copy->num_subroutine_types = this->num_subroutine_types; 273 copy->subroutine_types = ralloc_array(mem_ctx, const struct glsl_type *, copy->num_subroutine_types); 274 for (int i = 0; i < copy->num_subroutine_types; i++) 275 copy->subroutine_types[i] = this->subroutine_types[i]; 276 277 foreach_in_list(const ir_function_signature, sig, &this->signatures) { 278 ir_function_signature *sig_copy = sig->clone(mem_ctx, ht); 279 copy->add_signature(sig_copy); 280 281 if (ht != NULL) { 282 _mesa_hash_table_insert(ht, 283 (void *)const_cast<ir_function_signature *>(sig), sig_copy); 284 } 285 } 286 287 return copy; 288 } 289 290 ir_function_signature * 291 ir_function_signature::clone(void *mem_ctx, struct hash_table *ht) const 292 { 293 ir_function_signature *copy = this->clone_prototype(mem_ctx, ht); 294 295 copy->is_defined = this->is_defined; 296 297 /* Clone the instruction list. 298 */ 299 foreach_in_list(const ir_instruction, inst, &this->body) { 300 ir_instruction *const inst_copy = inst->clone(mem_ctx, ht); 301 copy->body.push_tail(inst_copy); 302 } 303 304 return copy; 305 } 306 307 ir_function_signature * 308 ir_function_signature::clone_prototype(void *mem_ctx, struct hash_table *ht) const 309 { 310 ir_function_signature *copy = 311 new(mem_ctx) ir_function_signature(this->return_type); 312 313 copy->is_defined = false; 314 copy->builtin_avail = this->builtin_avail; 315 copy->origin = this; 316 317 /* Clone the parameter list, but NOT the body. 318 */ 319 foreach_in_list(const ir_variable, param, &this->parameters) { 320 assert(const_cast<ir_variable *>(param)->as_variable() != NULL); 321 322 ir_variable *const param_copy = param->clone(mem_ctx, ht); 323 copy->parameters.push_tail(param_copy); 324 } 325 326 return copy; 327 } 328 329 ir_constant * 330 ir_constant::clone(void *mem_ctx, struct hash_table *ht) const 331 { 332 (void)ht; 333 334 switch (this->type->base_type) { 335 case GLSL_TYPE_UINT: 336 case GLSL_TYPE_INT: 337 case GLSL_TYPE_FLOAT: 338 case GLSL_TYPE_DOUBLE: 339 case GLSL_TYPE_BOOL: 340 return new(mem_ctx) ir_constant(this->type, &this->value); 341 342 case GLSL_TYPE_STRUCT: { 343 ir_constant *c = new(mem_ctx) ir_constant; 344 345 c->type = this->type; 346 for (const exec_node *node = this->components.get_head_raw() 347 ; !node->is_tail_sentinel() 348 ; node = node->next) { 349 ir_constant *const orig = (ir_constant *) node; 350 351 c->components.push_tail(orig->clone(mem_ctx, NULL)); 352 } 353 354 return c; 355 } 356 357 case GLSL_TYPE_ARRAY: { 358 ir_constant *c = new(mem_ctx) ir_constant; 359 360 c->type = this->type; 361 c->array_elements = ralloc_array(c, ir_constant *, this->type->length); 362 for (unsigned i = 0; i < this->type->length; i++) { 363 c->array_elements[i] = this->array_elements[i]->clone(mem_ctx, NULL); 364 } 365 return c; 366 } 367 368 case GLSL_TYPE_SAMPLER: 369 case GLSL_TYPE_IMAGE: 370 case GLSL_TYPE_ATOMIC_UINT: 371 case GLSL_TYPE_VOID: 372 case GLSL_TYPE_ERROR: 373 case GLSL_TYPE_SUBROUTINE: 374 case GLSL_TYPE_INTERFACE: 375 case GLSL_TYPE_FUNCTION: 376 assert(!"Should not get here."); 377 break; 378 } 379 380 return NULL; 381 } 382 383 384 class fixup_ir_call_visitor : public ir_hierarchical_visitor { 385 public: 386 fixup_ir_call_visitor(struct hash_table *ht) 387 { 388 this->ht = ht; 389 } 390 391 virtual ir_visitor_status visit_enter(ir_call *ir) 392 { 393 /* Try to find the function signature referenced by the ir_call in the 394 * table. If it is found, replace it with the value from the table. 395 */ 396 ir_function_signature *sig; 397 hash_entry *entry = _mesa_hash_table_search(this->ht, ir->callee); 398 399 if (entry != NULL) { 400 sig = (ir_function_signature *) entry->data; 401 ir->callee = sig; 402 } 403 404 /* Since this may be used before function call parameters are flattened, 405 * the children also need to be processed. 406 */ 407 return visit_continue; 408 } 409 410 private: 411 struct hash_table *ht; 412 }; 413 414 415 static void 416 fixup_function_calls(struct hash_table *ht, exec_list *instructions) 417 { 418 fixup_ir_call_visitor v(ht); 419 v.run(instructions); 420 } 421 422 423 void 424 clone_ir_list(void *mem_ctx, exec_list *out, const exec_list *in) 425 { 426 struct hash_table *ht = 427 _mesa_hash_table_create(NULL, _mesa_hash_pointer, _mesa_key_pointer_equal); 428 429 foreach_in_list(const ir_instruction, original, in) { 430 ir_instruction *copy = original->clone(mem_ctx, ht); 431 432 out->push_tail(copy); 433 } 434 435 /* Make a pass over the cloned tree to fix up ir_call nodes to point to the 436 * cloned ir_function_signature nodes. This cannot be done automatically 437 * during cloning because the ir_call might be a forward reference (i.e., 438 * the function signature that it references may not have been cloned yet). 439 */ 440 fixup_function_calls(ht, out); 441 442 _mesa_hash_table_destroy(ht, NULL); 443 } 444
