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| 4358 | Serge | 1 | /* |
| 2 | * Copyright © 2010 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 21 | * DEALINGS IN THE SOFTWARE. |
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| 22 | */ |
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| 23 | |||
| 24 | /** |
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| 25 | * \file ir_import_prototypes.cpp |
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| 26 | * Import function prototypes from one IR tree into another. |
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| 27 | * |
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| 28 | * \author Ian Romanick |
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| 29 | */ |
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| 30 | #include "ir.h" |
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| 31 | #include "glsl_symbol_table.h" |
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| 32 | |||
| 33 | /** |
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| 34 | * Visitor used to import function prototypes |
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| 35 | * |
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| 36 | * Normally the \c clone method of either \c ir_function or |
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| 37 | * \c ir_function_signature could be used. However, we don't want a complete |
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| 38 | * clone of the \c ir_function_signature. We want everything \b except the |
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| 39 | * body of the function. |
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| 40 | */ |
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| 41 | class import_prototype_visitor : public ir_hierarchical_visitor { |
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| 42 | public: |
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| 43 | /** |
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| 44 | */ |
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| 45 | import_prototype_visitor(exec_list *list, glsl_symbol_table *symbols, |
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| 46 | void *mem_ctx) |
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| 47 | { |
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| 48 | this->mem_ctx = mem_ctx; |
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| 49 | this->list = list; |
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| 50 | this->symbols = symbols; |
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| 51 | this->function = NULL; |
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| 52 | } |
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| 53 | |||
| 54 | virtual ir_visitor_status visit_enter(ir_function *ir) |
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| 55 | { |
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| 56 | assert(this->function == NULL); |
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| 57 | |||
| 58 | this->function = this->symbols->get_function(ir->name); |
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| 59 | if (!this->function) { |
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| 60 | this->function = new(this->mem_ctx) ir_function(ir->name); |
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| 61 | |||
| 62 | list->push_tail(this->function); |
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| 63 | |||
| 64 | /* Add the new function to the symbol table. |
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| 65 | */ |
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| 66 | this->symbols->add_function(this->function); |
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| 67 | } |
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| 68 | return visit_continue; |
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| 69 | } |
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| 70 | |||
| 71 | virtual ir_visitor_status visit_leave(ir_function *ir) |
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| 72 | { |
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| 73 | (void) ir; |
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| 74 | assert(this->function != NULL); |
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| 75 | |||
| 76 | this->function = NULL; |
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| 77 | return visit_continue; |
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| 78 | } |
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| 79 | |||
| 80 | ir_visitor_status visit_enter(ir_function_signature *ir) |
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| 81 | { |
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| 82 | assert(this->function != NULL); |
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| 83 | |||
| 84 | ir_function_signature *copy = ir->clone_prototype(mem_ctx, NULL); |
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| 85 | |||
| 86 | this->function->add_signature(copy); |
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| 87 | |||
| 88 | /* Do not process child nodes of the ir_function_signature. There can |
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| 89 | * never be any nodes inside the ir_function_signature that we care |
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| 90 | * about. Instead continue with the next sibling. |
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| 91 | */ |
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| 92 | return visit_continue_with_parent; |
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| 93 | } |
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| 94 | |||
| 95 | private: |
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| 96 | exec_list *list; |
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| 97 | ir_function *function; |
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| 98 | glsl_symbol_table *symbols; |
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| 99 | void *mem_ctx; |
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| 100 | }; |
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| 101 | |||
| 102 | |||
| 103 | /** |
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| 104 | * Import function prototypes from one IR tree into another |
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| 105 | * |
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| 106 | * \param source Source instruction stream containing functions whose |
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| 107 | * prototypes are to be imported |
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| 108 | * \param dest Destination instruction stream where new \c ir_function and |
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| 109 | * \c ir_function_signature nodes will be stored |
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| 110 | * \param symbols Symbol table where new functions will be stored |
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| 111 | * \param mem_ctx ralloc memory context used for new allocations |
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| 112 | */ |
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| 113 | void |
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| 114 | import_prototypes(const exec_list *source, exec_list *dest, |
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| 115 | glsl_symbol_table *symbols, void *mem_ctx) |
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| 116 | { |
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| 117 | import_prototype_visitor v(dest, symbols, mem_ctx); |
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| 118 | |||
| 119 | /* Making source be const is just extra documentation. |
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| 120 | */ |
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| 121 | v.run(const_cast |
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| 122 | } |