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  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. /**
  25.  * \file ir_rvalue_visitor.cpp
  26.  *
  27.  * Generic class to implement the common pattern we have of wanting to
  28.  * visit each ir_rvalue * and possibly change that node to a different
  29.  * class.
  30.  */
  31.  
  32. #include "ir.h"
  33. #include "ir_visitor.h"
  34. #include "ir_rvalue_visitor.h"
  35. #include "ir_print_visitor.h"
  36. #include "glsl_types.h"
  37.  
  38. ir_visitor_status
  39. ir_rvalue_visitor::visit_leave(ir_expression *ir)
  40. {
  41.    unsigned int operand;
  42.  
  43.    for (operand = 0; operand < ir->get_num_operands(); operand++) {
  44.       handle_rvalue(&ir->operands[operand]);
  45.    }
  46.  
  47.    return visit_continue;
  48. }
  49.  
  50. ir_visitor_status
  51. ir_rvalue_visitor::visit_leave(ir_texture *ir)
  52. {
  53.    handle_rvalue(&ir->coordinate);
  54.    handle_rvalue(&ir->projector);
  55.    handle_rvalue(&ir->shadow_comparitor);
  56.  
  57.    switch (ir->op) {
  58.    case ir_tex:
  59.       break;
  60.    case ir_txb:
  61.       handle_rvalue(&ir->lod_info.bias);
  62.       break;
  63.    case ir_txf:
  64.    case ir_txl:
  65.       handle_rvalue(&ir->lod_info.lod);
  66.       break;
  67.    case ir_txd:
  68.       handle_rvalue(&ir->lod_info.grad.dPdx);
  69.       handle_rvalue(&ir->lod_info.grad.dPdy);
  70.       break;
  71.    }
  72.  
  73.    return visit_continue;
  74. }
  75.  
  76. ir_visitor_status
  77. ir_rvalue_visitor::visit_leave(ir_swizzle *ir)
  78. {
  79.    handle_rvalue(&ir->val);
  80.    return visit_continue;
  81. }
  82.  
  83. ir_visitor_status
  84. ir_rvalue_visitor::visit_leave(ir_dereference_array *ir)
  85. {
  86.    /* The array index is not the target of the assignment, so clear the
  87.     * 'in_assignee' flag.  Restore it after returning from the array index.
  88.     */
  89.    const bool was_in_assignee = this->in_assignee;
  90.    this->in_assignee = false;
  91.    handle_rvalue(&ir->array_index);
  92.    this->in_assignee = was_in_assignee;
  93.  
  94.    handle_rvalue(&ir->array);
  95.    return visit_continue;
  96. }
  97.  
  98. ir_visitor_status
  99. ir_rvalue_visitor::visit_leave(ir_dereference_record *ir)
  100. {
  101.    handle_rvalue(&ir->record);
  102.    return visit_continue;
  103. }
  104.  
  105. ir_visitor_status
  106. ir_rvalue_visitor::visit_leave(ir_assignment *ir)
  107. {
  108.    handle_rvalue(&ir->rhs);
  109.    handle_rvalue(&ir->condition);
  110.  
  111.    return visit_continue;
  112. }
  113.  
  114. ir_visitor_status
  115. ir_rvalue_visitor::visit_leave(ir_call *ir)
  116. {
  117.    foreach_iter(exec_list_iterator, iter, *ir) {
  118.       ir_rvalue *param = (ir_rvalue *)iter.get();
  119.       ir_rvalue *new_param = param;
  120.       handle_rvalue(&new_param);
  121.  
  122.       if (new_param != param) {
  123.          param->replace_with(new_param);
  124.       }
  125.    }
  126.    return visit_continue;
  127. }
  128.  
  129. ir_visitor_status
  130. ir_rvalue_visitor::visit_leave(ir_return *ir)
  131. {
  132.    handle_rvalue(&ir->value);;
  133.    return visit_continue;
  134. }
  135.  
  136. ir_visitor_status
  137. ir_rvalue_visitor::visit_leave(ir_if *ir)
  138. {
  139.    handle_rvalue(&ir->condition);
  140.    return visit_continue;
  141. }
  142.