aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/glsl/ir_clone.cpp
blob: 9d4178de8b12a8874735954b253f75cf81d9b0ce (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
/*
 * Copyright © 2010 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <string.h>
#include "main/compiler.h"
#include "ir.h"
#include "glsl_types.h"
#include "program/hash_table.h"

ir_rvalue *
ir_rvalue::clone(void *mem_ctx, struct hash_table *ht) const
{
   /* The only possible instantiation is the generic error value. */
   return error_value(mem_ctx);
}

/**
 * Duplicate an IR variable
 */
ir_variable *
ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_variable *var = new(mem_ctx) ir_variable(this->type, this->name,
					       (ir_variable_mode) this->mode);

   var->max_array_access = this->max_array_access;
   var->read_only = this->read_only;
   var->centroid = this->centroid;
   var->invariant = this->invariant;
   var->interpolation = this->interpolation;
   var->location = this->location;
   var->index = this->index;
   var->binding = this->binding;
   var->warn_extension = this->warn_extension;
   var->origin_upper_left = this->origin_upper_left;
   var->pixel_center_integer = this->pixel_center_integer;
   var->explicit_location = this->explicit_location;
   var->explicit_index = this->explicit_index;
   var->explicit_binding = this->explicit_binding;
   var->has_initializer = this->has_initializer;
   var->depth_layout = this->depth_layout;

   var->num_state_slots = this->num_state_slots;
   if (this->state_slots) {
      /* FINISHME: This really wants to use something like talloc_reference, but
       * FINISHME: ralloc doesn't have any similar function.
       */
      var->state_slots = ralloc_array(var, ir_state_slot,
				      this->num_state_slots);
      memcpy(var->state_slots, this->state_slots,
	     sizeof(this->state_slots[0]) * var->num_state_slots);
   }

   if (this->constant_value)
      var->constant_value = this->constant_value->clone(mem_ctx, ht);

   if (this->constant_initializer)
      var->constant_initializer =
	 this->constant_initializer->clone(mem_ctx, ht);

   var->interface_type = this->interface_type;

   if (ht) {
      hash_table_insert(ht, var, (void *)const_cast<ir_variable *>(this));
   }

   return var;
}

ir_swizzle *
ir_swizzle::clone(void *mem_ctx, struct hash_table *ht) const
{
   return new(mem_ctx) ir_swizzle(this->val->clone(mem_ctx, ht), this->mask);
}

ir_return *
ir_return::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_rvalue *new_value = NULL;

   if (this->value)
      new_value = this->value->clone(mem_ctx, ht);

   return new(mem_ctx) ir_return(new_value);
}

ir_discard *
ir_discard::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_rvalue *new_condition = NULL;

   if (this->condition != NULL)
      new_condition = this->condition->clone(mem_ctx, ht);

   return new(mem_ctx) ir_discard(new_condition);
}

ir_loop_jump *
ir_loop_jump::clone(void *mem_ctx, struct hash_table *ht) const
{
   (void)ht;

   return new(mem_ctx) ir_loop_jump(this->mode);
}

ir_if *
ir_if::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_if *new_if = new(mem_ctx) ir_if(this->condition->clone(mem_ctx, ht));

   foreach_iter(exec_list_iterator, iter, this->then_instructions) {
      ir_instruction *ir = (ir_instruction *)iter.get();
      new_if->then_instructions.push_tail(ir->clone(mem_ctx, ht));
   }

   foreach_iter(exec_list_iterator, iter, this->else_instructions) {
      ir_instruction *ir = (ir_instruction *)iter.get();
      new_if->else_instructions.push_tail(ir->clone(mem_ctx, ht));
   }

   return new_if;
}

ir_loop *
ir_loop::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_loop *new_loop = new(mem_ctx) ir_loop();

   if (this->from)
      new_loop->from = this->from->clone(mem_ctx, ht);
   if (this->to)
      new_loop->to = this->to->clone(mem_ctx, ht);
   if (this->increment)
      new_loop->increment = this->increment->clone(mem_ctx, ht);
   new_loop->counter = counter;

   foreach_iter(exec_list_iterator, iter, this->body_instructions) {
      ir_instruction *ir = (ir_instruction *)iter.get();
      new_loop->body_instructions.push_tail(ir->clone(mem_ctx, ht));
   }

   new_loop->cmp = this->cmp;
   return new_loop;
}

ir_call *
ir_call::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_dereference_variable *new_return_ref = NULL;
   if (this->return_deref != NULL)
      new_return_ref = this->return_deref->clone(mem_ctx, ht);

   exec_list new_parameters;

   foreach_iter(exec_list_iterator, iter, this->actual_parameters) {
      ir_instruction *ir = (ir_instruction *)iter.get();
      new_parameters.push_tail(ir->clone(mem_ctx, ht));
   }

   return new(mem_ctx) ir_call(this->callee, new_return_ref, &new_parameters);
}

ir_expression *
ir_expression::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_rvalue *op[Elements(this->operands)] = { NULL, };
   unsigned int i;

   for (i = 0; i < get_num_operands(); i++) {
      op[i] = this->operands[i]->clone(mem_ctx, ht);
   }

   return new(mem_ctx) ir_expression(this->operation, this->type,
				     op[0], op[1], op[2], op[3]);
}

ir_dereference_variable *
ir_dereference_variable::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_variable *new_var;

   if (ht) {
      new_var = (ir_variable *)hash_table_find(ht, this->var);
      if (!new_var)
	 new_var = this->var;
   } else {
      new_var = this->var;
   }

   return new(mem_ctx) ir_dereference_variable(new_var);
}

ir_dereference_array *
ir_dereference_array::clone(void *mem_ctx, struct hash_table *ht) const
{
   return new(mem_ctx) ir_dereference_array(this->array->clone(mem_ctx, ht),
					    this->array_index->clone(mem_ctx,
								     ht));
}

ir_dereference_record *
ir_dereference_record::clone(void *mem_ctx, struct hash_table *ht) const
{
   return new(mem_ctx) ir_dereference_record(this->record->clone(mem_ctx, ht),
					     this->field);
}

ir_texture *
ir_texture::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_texture *new_tex = new(mem_ctx) ir_texture(this->op);
   new_tex->type = this->type;

   new_tex->sampler = this->sampler->clone(mem_ctx, ht);
   if (this->coordinate)
      new_tex->coordinate = this->coordinate->clone(mem_ctx, ht);
   if (this->projector)
      new_tex->projector = this->projector->clone(mem_ctx, ht);
   if (this->shadow_comparitor) {
      new_tex->shadow_comparitor = this->shadow_comparitor->clone(mem_ctx, ht);
   }

   if (this->offset != NULL)
      new_tex->offset = this->offset->clone(mem_ctx, ht);

   switch (this->op) {
   case ir_tex:
   case ir_lod:
      break;
   case ir_txb:
      new_tex->lod_info.bias = this->lod_info.bias->clone(mem_ctx, ht);
      break;
   case ir_txl:
   case ir_txf:
   case ir_txs:
      new_tex->lod_info.lod = this->lod_info.lod->clone(mem_ctx, ht);
      break;
   case ir_txf_ms:
      new_tex->lod_info.sample_index = this->lod_info.sample_index->clone(mem_ctx, ht);
      break;
   case ir_txd:
      new_tex->lod_info.grad.dPdx = this->lod_info.grad.dPdx->clone(mem_ctx, ht);
      new_tex->lod_info.grad.dPdy = this->lod_info.grad.dPdy->clone(mem_ctx, ht);
      break;
   }

   return new_tex;
}

ir_assignment *
ir_assignment::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_rvalue *new_condition = NULL;

   if (this->condition)
      new_condition = this->condition->clone(mem_ctx, ht);

   return new(mem_ctx) ir_assignment(this->lhs->clone(mem_ctx, ht),
				     this->rhs->clone(mem_ctx, ht),
				     new_condition,
				     this->write_mask);
}

ir_function *
ir_function::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_function *copy = new(mem_ctx) ir_function(this->name);

   foreach_list_const(node, &this->signatures) {
      const ir_function_signature *const sig =
	 (const ir_function_signature *const) node;

      ir_function_signature *sig_copy = sig->clone(mem_ctx, ht);
      copy->add_signature(sig_copy);

      if (ht != NULL)
	 hash_table_insert(ht, sig_copy,
			   (void *)const_cast<ir_function_signature *>(sig));
   }

   return copy;
}

ir_function_signature *
ir_function_signature::clone(void *mem_ctx, struct hash_table *ht) const
{
   ir_function_signature *copy = this->clone_prototype(mem_ctx, ht);

   copy->is_defined = this->is_defined;

   /* Clone the instruction list.
    */
   foreach_list_const(node, &this->body) {
      const ir_instruction *const inst = (const ir_instruction *) node;

      ir_instruction *const inst_copy = inst->clone(mem_ctx, ht);
      copy->body.push_tail(inst_copy);
   }

   return copy;
}

ir_function_signature *
ir_function_signature::clone_prototype(void *mem_ctx, struct hash_table *ht) const
{
   ir_function_signature *copy =
      new(mem_ctx) ir_function_signature(this->return_type);

   copy->is_defined = false;
   copy->is_builtin = this->is_builtin;
   copy->origin = this;

   /* Clone the parameter list, but NOT the body.
    */
   foreach_list_const(node, &this->parameters) {
      const ir_variable *const param = (const ir_variable *) node;

      assert(const_cast<ir_variable *>(param)->as_variable() != NULL);

      ir_variable *const param_copy = param->clone(mem_ctx, ht);
      copy->parameters.push_tail(param_copy);
   }

   return copy;
}

ir_constant *
ir_constant::clone(void *mem_ctx, struct hash_table *ht) const
{
   (void)ht;

   switch (this->type->base_type) {
   case GLSL_TYPE_UINT:
   case GLSL_TYPE_INT:
   case GLSL_TYPE_FLOAT:
   case GLSL_TYPE_BOOL:
      return new(mem_ctx) ir_constant(this->type, &this->value);

   case GLSL_TYPE_STRUCT: {
      ir_constant *c = new(mem_ctx) ir_constant;

      c->type = this->type;
      for (exec_node *node = this->components.head
	      ; !node->is_tail_sentinel()
	      ; node = node->next) {
	 ir_constant *const orig = (ir_constant *) node;

	 c->components.push_tail(orig->clone(mem_ctx, NULL));
      }

      return c;
   }

   case GLSL_TYPE_ARRAY: {
      ir_constant *c = new(mem_ctx) ir_constant;

      c->type = this->type;
      c->array_elements = ralloc_array(c, ir_constant *, this->type->length);
      for (unsigned i = 0; i < this->type->length; i++) {
	 c->array_elements[i] = this->array_elements[i]->clone(mem_ctx, NULL);
      }
      return c;
   }

   case GLSL_TYPE_SAMPLER:
   case GLSL_TYPE_VOID:
   case GLSL_TYPE_ERROR:
   case GLSL_TYPE_INTERFACE:
      assert(!"Should not get here.");
      break;
   }

   return NULL;
}


class fixup_ir_call_visitor : public ir_hierarchical_visitor {
public:
   fixup_ir_call_visitor(struct hash_table *ht)
   {
      this->ht = ht;
   }

   virtual ir_visitor_status visit_enter(ir_call *ir)
   {
      /* Try to find the function signature referenced by the ir_call in the
       * table.  If it is found, replace it with the value from the table.
       */
      ir_function_signature *sig =
	 (ir_function_signature *) hash_table_find(this->ht, ir->callee);
      if (sig != NULL)
	 ir->callee = sig;

      /* Since this may be used before function call parameters are flattened,
       * the children also need to be processed.
       */
      return visit_continue;
   }

private:
   struct hash_table *ht;
};


static void
fixup_function_calls(struct hash_table *ht, exec_list *instructions)
{
   fixup_ir_call_visitor v(ht);
   v.run(instructions);
}


void
clone_ir_list(void *mem_ctx, exec_list *out, const exec_list *in)
{
   struct hash_table *ht =
      hash_table_ctor(0, hash_table_pointer_hash, hash_table_pointer_compare);

   foreach_list_const(node, in) {
      const ir_instruction *const original = (ir_instruction *) node;
      ir_instruction *copy = original->clone(mem_ctx, ht);

      out->push_tail(copy);
   }

   /* Make a pass over the cloned tree to fix up ir_call nodes to point to the
    * cloned ir_function_signature nodes.  This cannot be done automatically
    * during cloning because the ir_call might be a forward reference (i.e.,
    * the function signature that it references may not have been cloned yet).
    */
   fixup_function_calls(ht, out);

   hash_table_dtor(ht);
}