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annotate src/impl/ppc/altivec.c @ 28:c6c99ab1088a

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*: add min/max functions and a big big refactor (again) agh, this time I added a few more implementations (and generally made the code just a little faster...)
author Paper <paper@tflc.us>
date Thu, 24 Apr 2025 00:54:02 -0400
parents 92156fe32755
children bf6ad516f1e6
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1 /**
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2 * vec - a tiny SIMD vector library in C99
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3 *
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4 * Copyright (c) 2024 Paper
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5 *
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6 * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 * of this software and associated documentation files (the "Software"), to deal
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8 * in the Software without restriction, including without limitation the rights
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9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 * copies of the Software, and to permit persons to whom the Software is
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11 * furnished to do so, subject to the following conditions:
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12 *
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13 * The above copyright notice and this permission notice shall be included in all
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14 * copies or substantial portions of the Software.
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15 *
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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22 * SOFTWARE.
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23 **/
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24
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25 #include "vec/impl/ppc/altivec.h"
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26 #include "vec/impl/generic.h"
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28 #include <altivec.h>
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29
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30 #define VEC_DEFINE_IMPL_DATA(sign, bits, size, type) \
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31 union v##sign##int##bits##x##size##_impl_data { \
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32 v##sign##int##bits##x##size vec; \
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33 vector type altivec; \
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34 }; \
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35 \
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36 VEC_STATIC_ASSERT(VEC_ALIGNOF(vector type) <= VEC_ALIGNOF(v##sign##int##bits##x##size), "vec: v" #sign "int" #bits "x" #size " alignment needs to be expanded to fit intrinsic type size"); \
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37 VEC_STATIC_ASSERT(sizeof(vector type) <= sizeof(v##sign##int##bits##x##size), "vec: v" #sign "int" #bits "x" #size " needs to be expanded to fit intrinsic type size");
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38
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39 VEC_DEFINE_IMPL_DATA( , 8, 16, signed char)
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40 VEC_DEFINE_IMPL_DATA(u, 8, 16, unsigned char)
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41 VEC_DEFINE_IMPL_DATA( , 16, 8, signed short)
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42 VEC_DEFINE_IMPL_DATA(u, 16, 8, unsigned short)
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43 VEC_DEFINE_IMPL_DATA( , 32, 4, signed int)
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44 VEC_DEFINE_IMPL_DATA(u, 32, 4, unsigned int)
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45
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46 #undef VEC_DEFINE_IMPL_DATA
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47
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48 /* GCC 4.2.1 on Mac OS X doesn't have these for some reason */
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49 #ifdef vec_mul
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50 # define VEC_ALTIVEC_DEFINE_MUL(sign, csign, bits, size) \
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51 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_mul(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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52 { \
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53 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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54 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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55 \
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56 vec1d->altivec = vec_mul(vec1d->altivec, vec2d->altivec); \
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57 return vec1d->vec; \
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58 }
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59 # define VEC_ALTIVEC_STRUCT_MUL(sign, csign, bits, size) \
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60 .mul = v##sign##int##bits##x##size##_altivec_mul,
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61 #else
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62 # define VEC_ALTIVEC_DEFINE_MUL(sign, csign, bits, size)
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63 # define VEC_ALTIVEC_STRUCT_MUL(sign, csign, bits, size) \
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64 /* nothing */
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65 #endif
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66
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67 #ifdef vec_splats
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68 # define VEC_ALTIVEC_DEFINE_SPLAT(sign, csign, bits, size) \
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69 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_splat(vec_##sign##int##bits x) \
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70 { \
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71 union v##sign##int##bits##x##size##_impl_data vec; \
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72 vec.altivec = vec_splats(x); \
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73 return vec.vec; \
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74 }
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75 # define VEC_ALTIVEC_STRUCT_SPLAT(sign, csign, bits, size) \
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76 .splat = v##sign##int##bits##x##size##_altivec_splat,
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77 #else
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78 # define VEC_ALTIVEC_DEFINE_SPLAT(sign, csign, bits, size)
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79 # define VEC_ALTIVEC_STRUCT_SPLAT(sign, csign, bits, size) \
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80 /* nothing */
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81 #endif
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82
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83 #define VEC_ALTIVEC_uRSHIFT vec_sr
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84 #define VEC_ALTIVEC_RSHIFT vec_sra
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85
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86 #define VEC_ALTIVEC_DEFINE_uLRSHIFT(sign, csign, bits, size) \
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87 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_lrshift(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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88 { \
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89 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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90 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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91 \
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92 vec1d->altivec = vec_sr(vec1d->altivec, vec2d->altivec); \
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93 return vec1d->vec; \
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94 }
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95 #define VEC_ALTIVEC_STRUCT_uLRSHIFT(sign, csign, bits, size) \
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96 .lrshift = v##sign##int##bits##x##size##_altivec_lrshift,
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97
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98 #define VEC_ALTIVEC_DEFINE_LRSHIFT(sign, csign, bits, size)
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99 #define VEC_ALTIVEC_STRUCT_LRSHIFT(sign, csign, bits, size) /* nothing */
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100
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101 #define VEC_ALTIVEC_CAST_BOOL_8 (vector signed char)
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102 #define VEC_ALTIVEC_CAST_BOOL_U8 (vector unsigned char)
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103 #define VEC_ALTIVEC_CAST_BOOL_16 (vector signed short)
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104 #define VEC_ALTIVEC_CAST_BOOL_U16 (vector unsigned short)
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105 #define VEC_ALTIVEC_CAST_BOOL_32 (vector signed int)
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106 #define VEC_ALTIVEC_CAST_BOOL_U32 (vector unsigned int)
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107
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108 /* Since altivec conveniently made their API super user friendly, we can just use
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109 * one giant macro to define literally everything */
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110 #define VEC_DEFINE_OPERATIONS_SIGN(sign, csign, bits, size) \
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111 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_load_aligned(const vec_##sign##int##bits in[size]) \
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112 { \
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113 union v##sign##int##bits##x##size##_impl_data vec; \
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114 vec.altivec = vec_ld(0, in); \
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115 return vec.vec; \
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116 } \
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117 \
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118 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_load(const vec_##sign##int##bits in[size]) \
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119 { \
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120 union v##sign##int##bits##x##size##_impl_data vec; \
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121 vec.altivec = vec_perm(vec_ld(0, in), vec_ld(15, in), vec_lvsl(0, in)); \
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122 return vec.vec; \
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123 } \
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124 \
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125 VEC_FUNC_IMPL void v##sign##int##bits##x##size##_altivec_store_aligned(v##sign##int##bits##x##size vec, vec_##sign##int##bits out[size]) \
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126 { \
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127 vec_st(((union v##sign##int##bits##x##size##_impl_data *)&vec)->altivec, 0, out); \
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128 } \
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129 \
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130 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_add(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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131 { \
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132 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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133 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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134 \
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135 vec1d->altivec = vec_add(vec1d->altivec, vec2d->altivec); \
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136 return vec1d->vec; \
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137 } \
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138 \
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139 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_sub(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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140 { \
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141 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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142 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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143 \
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144 vec1d->altivec = vec_sub(vec1d->altivec, vec2d->altivec); \
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145 return vec1d->vec; \
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146 } \
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147 \
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148 VEC_ALTIVEC_DEFINE_MUL(sign, csign, bits, size) \
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149 \
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150 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_min(v##sign##int##bits##x##size vec1, vuint##bits##x##size vec2) \
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151 { \
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152 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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153 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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154 \
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155 vec1d->altivec = vec_min(vec1d->altivec, vec2d->altivec); \
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156 return vec1d->vec; \
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157 } \
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158 \
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159 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_max(v##sign##int##bits##x##size vec1, vuint##bits##x##size vec2) \
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160 { \
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161 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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162 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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163 \
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164 vec1d->altivec = vec_max(vec1d->altivec, vec2d->altivec); \
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165 return vec1d->vec; \
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166 } \
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167 \
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168 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_lshift(v##sign##int##bits##x##size vec1, vuint##bits##x##size vec2) \
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169 { \
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170 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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171 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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172 \
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173 vec1d->altivec = vec_sl(vec1d->altivec, vec2d->altivec); \
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174 return vec1d->vec; \
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175 } \
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176 \
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177 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_rshift(v##sign##int##bits##x##size vec1, vuint##bits##x##size vec2) \
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178 { \
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179 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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180 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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181 \
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182 vec1d->altivec = VEC_ALTIVEC_##sign##RSHIFT(vec1d->altivec, vec2d->altivec); \
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183 return vec1d->vec; \
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184 } \
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185 \
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186 VEC_ALTIVEC_DEFINE_##sign##LRSHIFT(sign, csign, bits, size) \
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187 \
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188 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_avg(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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189 { \
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190 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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191 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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192 \
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193 vec1d->altivec = vec_avg(vec1d->altivec, vec2d->altivec); \
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194 return vec1d->vec; \
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195 } \
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196 \
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197 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_and(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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198 { \
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199 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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200 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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201 \
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202 vec1d->altivec = vec_and(vec1d->altivec, vec2d->altivec); \
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203 return vec1d->vec; \
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204 } \
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205 \
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206 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_or(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
23
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207 { \
25
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208 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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diff changeset
209 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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diff changeset
210 \
92156fe32755 impl/ppc/altivec: update to new implementation
Paper <paper@tflc.us>
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diff changeset
211 vec1d->altivec = vec_or(vec1d->altivec, vec2d->altivec); \
92156fe32755 impl/ppc/altivec: update to new implementation
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diff changeset
212 return vec1d->vec; \
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213 } \
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Paper <paper@tflc.us>
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214 \
28
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215 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_xor(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
23
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216 { \
25
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diff changeset
217 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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diff changeset
218 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
92156fe32755 impl/ppc/altivec: update to new implementation
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219 \
92156fe32755 impl/ppc/altivec: update to new implementation
Paper <paper@tflc.us>
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220 vec1d->altivec = vec_xor(vec1d->altivec, vec2d->altivec); \
92156fe32755 impl/ppc/altivec: update to new implementation
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diff changeset
221 return vec1d->vec; \
23
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222 } \
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Paper <paper@tflc.us>
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223 \
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224 VEC_ALTIVEC_DEFINE_SPLAT(sign, csign, bits, size) \
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225 \
28
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226 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_cmplt(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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227 { \
25
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diff changeset
228 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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229 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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diff changeset
230 \
92156fe32755 impl/ppc/altivec: update to new implementation
Paper <paper@tflc.us>
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diff changeset
231 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmplt(vec1d->altivec, vec2d->altivec); \
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232 return vec1d->vec; \
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233 } \
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Paper <paper@tflc.us>
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234 \
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diff changeset
235 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_cmple(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
23
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236 { \
25
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diff changeset
237 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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diff changeset
238 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
92156fe32755 impl/ppc/altivec: update to new implementation
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diff changeset
239 \
92156fe32755 impl/ppc/altivec: update to new implementation
Paper <paper@tflc.us>
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diff changeset
240 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_or(vec_cmplt(vec1d->altivec, vec2d->altivec), vec_cmpeq(vec1d->altivec, vec2d->altivec)); \
92156fe32755 impl/ppc/altivec: update to new implementation
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diff changeset
241 return vec1d->vec; \
23
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242 } \
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Paper <paper@tflc.us>
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243 \
28
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Paper <paper@tflc.us>
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244 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_cmpeq(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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245 { \
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246 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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247 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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248 \
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249 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmpeq(vec1d->altivec, vec2d->altivec); \
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250 return vec1d->vec; \
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251 } \
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252 \
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253 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_cmpge(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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254 { \
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255 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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256 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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257 \
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258 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_or(vec_cmpgt(vec1d->altivec, vec2d->altivec), vec_cmpeq(vec1d->altivec, vec2d->altivec)); \
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259 return vec1d->vec; \
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260 } \
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261 \
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262 VEC_FUNC_IMPL v##sign##int##bits##x##size v##sign##int##bits##x##size##_altivec_cmpgt(v##sign##int##bits##x##size vec1, v##sign##int##bits##x##size vec2) \
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263 { \
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264 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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265 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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266 \
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267 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmpgt(vec1d->altivec, vec2d->altivec); \
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268 return vec1d->vec; \
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269 } \
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270 \
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271 const v##sign##int##bits##x##size##_impl v##sign##int##bits##x##size##_impl_altivec = { \
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272 VEC_ALTIVEC_STRUCT_SPLAT(sign, csign, bits, size) \
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273 .load_aligned = v##sign##int##bits##x##size##_altivec_load_aligned, \
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274 .load = v##sign##int##bits##x##size##_altivec_load, \
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275 .store_aligned = v##sign##int##bits##x##size##_altivec_store_aligned, \
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276 .add = v##sign##int##bits##x##size##_altivec_add, \
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277 .sub = v##sign##int##bits##x##size##_altivec_sub, \
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278 VEC_ALTIVEC_STRUCT_MUL(sign, csign, bits, size) \
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279 .avg = v##sign##int##bits##x##size##_altivec_avg, \
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280 .band = v##sign##int##bits##x##size##_altivec_and, \
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281 .bor = v##sign##int##bits##x##size##_altivec_or, \
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282 .bxor = v##sign##int##bits##x##size##_altivec_xor, \
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283 .lshift = v##sign##int##bits##x##size##_altivec_lshift, \
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284 .rshift = v##sign##int##bits##x##size##_altivec_rshift, \
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285 VEC_ALTIVEC_STRUCT_##sign##LRSHIFT(sign, csign, bits, size) \
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286 .cmplt = v##sign##int##bits##x##size##_altivec_cmplt, \
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287 .cmple = v##sign##int##bits##x##size##_altivec_cmple, \
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288 .cmpeq = v##sign##int##bits##x##size##_altivec_cmpeq, \
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289 .cmpge = v##sign##int##bits##x##size##_altivec_cmpge, \
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290 .cmpgt = v##sign##int##bits##x##size##_altivec_cmpgt, \
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291 };
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292
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293 #define VEC_DEFINE_OPERATIONS(bits, size) \
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294 VEC_DEFINE_OPERATIONS_SIGN( , , bits, size) \
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295 VEC_DEFINE_OPERATIONS_SIGN(u, U, bits, size)
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296
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297 VEC_DEFINE_OPERATIONS(8, 16)
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298 VEC_DEFINE_OPERATIONS(16, 8)
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299 VEC_DEFINE_OPERATIONS(32, 4)