src/glsl/ir_clone.cpp

   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 "ir.h"
  26 #include "glsl_types.h"
  27 extern "C" {
  28 #include "hash_table.h"
  29 }
  30
  31 /**
  32  * Duplicate an IR variable
  33  *
  34  * \note
  35  * This will probably be made \c virtual and moved to the base class
  36  * eventually.
  37  */
  38 ir_instruction *
  39 ir_variable::clone(struct hash_table *ht) const
  40 {
  41    void *ctx = talloc_parent(this);
  42    ir_variable *var = new(ctx) ir_variable(type, name);
  43
  44    var->max_array_access = this->max_array_access;
  45    var->read_only = this->read_only;
  46    var->centroid = this->centroid;
  47    var->invariant = this->invariant;
  48    var->mode = this->mode;
  49    var->interpolation = this->interpolation;
  50
  51    if (ht) {
  52       hash_table_insert(ht, var, (void *)const_cast<ir_variable *>(this));
  53    }
  54
  55    return var;
  56 }
  57
  58 ir_instruction *
  59 ir_swizzle::clone(struct hash_table *ht) const
  60 {
  61    void *ctx = talloc_parent(this);
  62    return new(ctx) ir_swizzle((ir_rvalue *)this->val->clone(ht), this->mask);
  63 }
  64
  65 ir_instruction *
  66 ir_return::clone(struct hash_table *ht) const
  67 {
  68    void *ctx = talloc_parent(this);
  69    ir_rvalue *new_value = NULL;
  70
  71    if (this->value)
  72       new_value = (ir_rvalue *)this->value->clone(ht);
  73
  74    return new(ctx) ir_return(new_value);
  75 }
  76
  77 ir_instruction *
  78 ir_loop_jump::clone(struct hash_table *ht) const
  79 {
  80    void *ctx = talloc_parent(this);
  81    (void)ht;
  82
  83    return new(ctx) ir_loop_jump(this->mode);
  84 }
  85
  86 ir_instruction *
  87 ir_if::clone(struct hash_table *ht) const
  88 {
  89    void *ctx = talloc_parent(this);
  90    ir_if *new_if = new(ctx) ir_if((ir_rvalue *)this->condition->clone(ht));
  91
  92    foreach_iter(exec_list_iterator, iter, this->then_instructions) {
  93       ir_instruction *ir = (ir_instruction *)iter.get();
  94       new_if->then_instructions.push_tail(ir->clone(ht));
  95    }
  96
  97    foreach_iter(exec_list_iterator, iter, this->else_instructions) {
  98       ir_instruction *ir = (ir_instruction *)iter.get();
  99       new_if->else_instructions.push_tail(ir->clone(ht));
 100    }
 101
 102    return new_if;
 103 }
 104
 105 ir_instruction *
 106 ir_loop::clone(struct hash_table *ht) const
 107 {
 108    void *ctx = talloc_parent(this);
 109    ir_loop *new_loop = new(ctx) ir_loop();
 110
 111    if (this->from)
 112       new_loop->from = (ir_rvalue *)this->from->clone(ht);
 113    if (this->to)
 114       new_loop->to = (ir_rvalue *)this->to->clone(ht);
 115    if (this->increment)
 116       new_loop->increment = (ir_rvalue *)this->increment->clone(ht);
 117    new_loop->counter = counter;
 118
 119    foreach_iter(exec_list_iterator, iter, this->body_instructions) {
 120       ir_instruction *ir = (ir_instruction *)iter.get();
 121       new_loop->body_instructions.push_tail(ir->clone(ht));
 122    }
 123
 124    return new_loop;
 125 }
 126
 127 ir_instruction *
 128 ir_call::clone(struct hash_table *ht) const
 129 {
 130    void *ctx = talloc_parent(this);
 131    exec_list new_parameters;
 132
 133    foreach_iter(exec_list_iterator, iter, this->actual_parameters) {
 134       ir_instruction *ir = (ir_instruction *)iter.get();
 135       new_parameters.push_tail(ir->clone(ht));
 136    }
 137
 138    return new(ctx) ir_call(this->callee, &new_parameters);
 139 }
 140
 141 ir_instruction *
 142 ir_expression::clone(struct hash_table *ht) const
 143 {
 144    void *ctx = talloc_parent(this);
 145    ir_rvalue *op[2] = {NULL, NULL};
 146    unsigned int i;
 147
 148    for (i = 0; i < get_num_operands(); i++) {
 149       op[i] = (ir_rvalue *)this->operands[i]->clone(ht);
 150    }
 151
 152    return new(ctx) ir_expression(this->operation, this->type, op[0], op[1]);
 153 }
 154
 155 ir_instruction *
 156 ir_dereference_variable::clone(struct hash_table *ht) const
 157 {
 158    void *ctx = talloc_parent(this);
 159    ir_variable *new_var;
 160
 161    if (ht) {
 162       new_var = (ir_variable *)hash_table_find(ht, this->var);
 163       if (!new_var)
 164          new_var = this->var;
 165    } else {
 166       new_var = this->var;
 167    }
 168
 169    return new(ctx) ir_dereference_variable(new_var);
 170 }
 171
 172 ir_instruction *
 173 ir_dereference_array::clone(struct hash_table *ht) const
 174 {
 175    void *ctx = talloc_parent(this);
 176    return new(ctx) ir_dereference_array((ir_rvalue *)this->array->clone(ht),
 177                                         (ir_rvalue *)this->array_index->clone(ht));
 178 }
 179
 180 ir_instruction *
 181 ir_dereference_record::clone(struct hash_table *ht) const
 182 {
 183    void *ctx = talloc_parent(this);
 184    return new(ctx) ir_dereference_record((ir_rvalue *)this->record->clone(ht),
 185                                          this->field);
 186 }
 187
 188 ir_instruction *
 189 ir_texture::clone(struct hash_table *ht) const
 190 {
 191    void *ctx = talloc_parent(this);
 192    ir_texture *new_tex = new(ctx) ir_texture(this->op);
 193
 194    new_tex->sampler = (ir_dereference *)this->sampler->clone(ht);
 195    new_tex->coordinate = (ir_rvalue *)this->coordinate->clone(ht);
 196    if (this->projector)
 197       new_tex->projector = (ir_rvalue *)this->projector->clone(ht);
 198    if (this->shadow_comparitor) {
 199       new_tex->shadow_comparitor =
 200          (ir_rvalue *)this->shadow_comparitor->clone(ht);
 201    }
 202
 203    for (int i = 0; i < 3; i++)
 204       new_tex->offsets[i] = this->offsets[i];
 205
 206    switch (this->op) {
 207    case ir_tex:
 208       break;
 209    case ir_txb:
 210       new_tex->lod_info.bias = (ir_rvalue *)this->lod_info.bias->clone(ht);
 211       break;
 212    case ir_txl:
 213    case ir_txf:
 214       new_tex->lod_info.lod = (ir_rvalue *)this->lod_info.lod->clone(ht);
 215       break;
 216    case ir_txd:
 217       new_tex->lod_info.grad.dPdx =
 218          (ir_rvalue *)this->lod_info.grad.dPdx->clone(ht);
 219       new_tex->lod_info.grad.dPdy =
 220          (ir_rvalue *)this->lod_info.grad.dPdy->clone(ht);
 221       break;
 222    }
 223
 224    return new_tex;
 225 }
 226
 227 ir_instruction *
 228 ir_assignment::clone(struct hash_table *ht) const
 229 {
 230    ir_rvalue *new_condition = NULL;
 231
 232    if (this->condition)
 233       new_condition = (ir_rvalue *)this->condition->clone(ht);
 234
 235    void *ctx = talloc_parent(this);
 236    return new(ctx) ir_assignment((ir_rvalue *)this->lhs->clone(ht),
 237                                  (ir_rvalue *)this->rhs->clone(ht),
 238                                  new_condition);
 239 }
 240
 241 ir_instruction *
 242 ir_function::clone(struct hash_table *ht) const
 243 {
 244    (void)ht;
 245    /* FINISHME */
 246    abort();
 247 }
 248
 249 ir_instruction *
 250 ir_function_signature::clone(struct hash_table *ht) const
 251 {
 252    (void)ht;
 253    /* FINISHME */
 254    abort();
 255 }
 256
 257 ir_instruction *
 258 ir_constant::clone(struct hash_table *ht) const
 259 {
 260    void *ctx = talloc_parent(this);
 261    (void)ht;
 262
 263    switch (this->type->base_type) {
 264    case GLSL_TYPE_UINT:
 265    case GLSL_TYPE_INT:
 266    case GLSL_TYPE_FLOAT:
 267    case GLSL_TYPE_BOOL:
 268       return new(ctx) ir_constant(this->type, &this->value);
 269
 270    case GLSL_TYPE_STRUCT: {
 271       ir_constant *c = new(ctx) ir_constant;
 272
 273       c->type = this->type;
 274       for (exec_node *node = this->components.head
 275               ; !node->is_tail_sentinal()
 276               ; node = node->next) {
 277          ir_constant *const orig = (ir_constant *) node;
 278
 279          c->components.push_tail(orig->clone(NULL));
 280       }
 281
 282       return c;
 283    }
 284
 285    default:
 286       assert(!"Should not get here."); break;
 287       return NULL;
 288    }
 289 }