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| 5564 | serge | 1 | /* |
| 2 | * Copyright © 2014 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 DEALINGS |
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| 21 | * IN THE SOFTWARE. |
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| 22 | * |
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| 23 | * Authors: |
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| 24 | * Jason Ekstrand (jason@jlekstrand.net) |
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| 25 | * |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef _NIR_SEARCH_ |
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| 29 | #define _NIR_SEARCH_ |
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| 30 | |||
| 31 | #include "nir.h" |
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| 32 | |||
| 33 | #define NIR_SEARCH_MAX_VARIABLES 16 |
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| 34 | |||
| 35 | typedef enum { |
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| 36 | nir_search_value_expression, |
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| 37 | nir_search_value_variable, |
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| 38 | nir_search_value_constant, |
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| 39 | } nir_search_value_type; |
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| 40 | |||
| 41 | typedef struct { |
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| 42 | nir_search_value_type type; |
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| 43 | } nir_search_value; |
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| 44 | |||
| 45 | typedef struct { |
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| 46 | nir_search_value value; |
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| 47 | |||
| 48 | /** The variable index; Must be less than NIR_SEARCH_MAX_VARIABLES */ |
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| 49 | unsigned variable; |
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| 50 | |||
| 51 | /** Indicates that the given variable must be a constant |
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| 52 | * |
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| 53 | * This is only alloed in search expressions and indicates that the |
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| 54 | * given variable is only allowed to match constant values. |
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| 55 | */ |
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| 56 | bool is_constant; |
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| 57 | |||
| 58 | /** Indicates that the given variable must have a certain type |
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| 59 | * |
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| 60 | * This is only allowed in search expressions and indicates that the |
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| 61 | * given variable is only allowed to match values that come from an ALU |
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| 62 | * instruction with the given output type. A type of nir_type_void |
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| 63 | * means it can match any type. |
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| 64 | * |
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| 65 | * Note: A variable that is both constant and has a non-void type will |
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| 66 | * never match anything. |
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| 67 | */ |
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| 68 | nir_alu_type type; |
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| 69 | } nir_search_variable; |
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| 70 | |||
| 71 | typedef struct { |
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| 72 | nir_search_value value; |
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| 73 | |||
| 74 | union { |
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| 75 | uint32_t u; |
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| 76 | int32_t i; |
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| 77 | float f; |
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| 78 | } data; |
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| 79 | } nir_search_constant; |
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| 80 | |||
| 81 | typedef struct { |
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| 82 | nir_search_value value; |
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| 83 | |||
| 84 | nir_op opcode; |
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| 85 | const nir_search_value *srcs[4]; |
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| 86 | } nir_search_expression; |
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| 87 | |||
| 88 | NIR_DEFINE_CAST(nir_search_value_as_variable, nir_search_value, |
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| 89 | nir_search_variable, value) |
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| 90 | NIR_DEFINE_CAST(nir_search_value_as_constant, nir_search_value, |
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| 91 | nir_search_constant, value) |
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| 92 | NIR_DEFINE_CAST(nir_search_value_as_expression, nir_search_value, |
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| 93 | nir_search_expression, value) |
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| 94 | |||
| 95 | nir_alu_instr * |
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| 96 | nir_replace_instr(nir_alu_instr *instr, const nir_search_expression *search, |
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| 97 | const nir_search_value *replace, void *mem_ctx); |
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| 98 | |||
| 99 | #endif /* _NIR_SEARCH_ */ |