annotate src/impl/ppc/altivec.c @ 27:d00b95f95dd1 default tip

impl/arm/neon: it compiles again, but is untested
author Paper <paper@tflc.us>
date Mon, 25 Nov 2024 00:33:02 -0500
parents 92156fe32755
children
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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 static 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 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 v##sign##int##bits##x##size##_generic_mul
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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 static 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 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 v##sign##int##bits##x##size##_generic_splat
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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 static 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 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) \
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100 v##sign##int##bits##x##size##_generic_lrshift
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101
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102 #define VEC_ALTIVEC_CAST_BOOL_8 (vector signed char)
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103 #define VEC_ALTIVEC_CAST_BOOL_U8 (vector unsigned char)
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104 #define VEC_ALTIVEC_CAST_BOOL_16 (vector signed short)
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105 #define VEC_ALTIVEC_CAST_BOOL_U16 (vector unsigned short)
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106 #define VEC_ALTIVEC_CAST_BOOL_32 (vector signed int)
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107 #define VEC_ALTIVEC_CAST_BOOL_U32 (vector unsigned int)
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108
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109 /* Since altivec conveniently made their API super user friendly, we can just use
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110 * one giant macro to define literally everything */
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111 #define VEC_DEFINE_OPERATIONS_SIGN(sign, csign, bits, size) \
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112 static 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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113 { \
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114 union v##sign##int##bits##x##size##_impl_data vec; \
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115 vec.altivec = vec_ld(0, in); \
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116 return vec.vec; \
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117 } \
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118 \
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119 static 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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120 { \
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121 union v##sign##int##bits##x##size##_impl_data vec; \
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122 vec.altivec = vec_perm(vec_ld(0, in), vec_ld(15, in), vec_lvsl(0, in)); \
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123 return vec.vec; \
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124 } \
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125 \
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126 static 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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127 { \
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128 vec_st(((union v##sign##int##bits##x##size##_impl_data *)&vec)->altivec, 0, out); \
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129 } \
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130 \
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131 static 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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132 { \
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133 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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134 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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135 \
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136 vec1d->altivec = vec_add(vec1d->altivec, vec2d->altivec); \
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137 return vec1d->vec; \
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138 } \
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139 \
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140 static 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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141 { \
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142 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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143 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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144 \
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145 vec1d->altivec = vec_sub(vec1d->altivec, vec2d->altivec); \
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146 return vec1d->vec; \
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147 } \
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148 \
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149 VEC_ALTIVEC_DEFINE_MUL(sign, csign, bits, size) \
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150 \
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151 static 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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152 { \
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153 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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154 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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155 \
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156 vec1d->altivec = vec_sl(vec1d->altivec, vec2d->altivec); \
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157 return vec1d->vec; \
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158 } \
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159 \
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160 static 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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161 { \
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162 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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163 union vuint##bits##x##size##_impl_data *vec2d = (union vuint##bits##x##size##_impl_data *)&vec2; \
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164 \
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165 vec1d->altivec = VEC_ALTIVEC_##sign##RSHIFT(vec1d->altivec, vec2d->altivec); \
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166 return vec1d->vec; \
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167 } \
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168 \
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169 VEC_ALTIVEC_DEFINE_##sign##LRSHIFT(sign, csign, bits, size) \
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170 \
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171 static 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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172 { \
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173 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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174 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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175 \
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176 vec1d->altivec = vec_avg(vec1d->altivec, vec2d->altivec); \
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177 return vec1d->vec; \
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178 } \
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179 \
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180 static 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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181 { \
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182 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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183 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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184 \
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185 vec1d->altivec = vec_and(vec1d->altivec, vec2d->altivec); \
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186 return vec1d->vec; \
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187 } \
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188 \
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189 static 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) \
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190 { \
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191 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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192 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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193 \
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194 vec1d->altivec = vec_or(vec1d->altivec, vec2d->altivec); \
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195 return vec1d->vec; \
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196 } \
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197 \
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198 static 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) \
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199 { \
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200 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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201 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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202 \
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203 vec1d->altivec = vec_xor(vec1d->altivec, vec2d->altivec); \
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204 return vec1d->vec; \
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205 } \
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206 \
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207 VEC_ALTIVEC_DEFINE_SPLAT(sign, csign, bits, size) \
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208 \
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209 static 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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210 { \
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211 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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212 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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213 \
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214 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmplt(vec1d->altivec, vec2d->altivec); \
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215 return vec1d->vec; \
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216 } \
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217 \
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218 static 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) \
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219 { \
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220 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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221 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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222 \
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223 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_or(vec_cmplt(vec1d->altivec, vec2d->altivec), vec_cmpeq(vec1d->altivec, vec2d->altivec)); \
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224 return vec1d->vec; \
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225 } \
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226 \
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227 static 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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228 { \
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229 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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230 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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231 \
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232 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmpeq(vec1d->altivec, vec2d->altivec); \
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233 return vec1d->vec; \
23
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234 } \
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235 \
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236 static 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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237 { \
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238 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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239 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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240 \
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241 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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242 return vec1d->vec; \
23
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243 } \
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244 \
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245 static 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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246 { \
25
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247 union v##sign##int##bits##x##size##_impl_data *vec1d = (union v##sign##int##bits##x##size##_impl_data *)&vec1; \
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248 union v##sign##int##bits##x##size##_impl_data *vec2d = (union v##sign##int##bits##x##size##_impl_data *)&vec2; \
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249 \
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250 vec1d->altivec = VEC_ALTIVEC_CAST_BOOL_##csign##bits vec_cmpgt(vec1d->altivec, vec2d->altivec); \
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251 return vec1d->vec; \
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252 } \
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253 \
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254 const v##sign##int##bits##x##size##_impl v##sign##int##bits##x##size##_impl_altivec = { \
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255 VEC_ALTIVEC_STRUCT_SPLAT(sign, csign, bits, size), \
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256 v##sign##int##bits##x##size##_altivec_load_aligned, \
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257 v##sign##int##bits##x##size##_altivec_load, \
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258 v##sign##int##bits##x##size##_altivec_store_aligned, \
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259 v##sign##int##bits##x##size##_generic_store, \
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260 v##sign##int##bits##x##size##_altivec_add, \
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261 v##sign##int##bits##x##size##_altivec_sub, \
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262 VEC_ALTIVEC_STRUCT_MUL(sign, csign, bits, size), \
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263 v##sign##int##bits##x##size##_generic_div, \
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264 v##sign##int##bits##x##size##_altivec_avg, \
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265 v##sign##int##bits##x##size##_altivec_and, \
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266 v##sign##int##bits##x##size##_altivec_or, \
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267 v##sign##int##bits##x##size##_altivec_xor, \
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268 v##sign##int##bits##x##size##_generic_not, \
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269 v##sign##int##bits##x##size##_altivec_lshift, \
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270 v##sign##int##bits##x##size##_altivec_rshift, \
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271 VEC_ALTIVEC_STRUCT_##sign##LRSHIFT(sign, csign, bits, size), \
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272 v##sign##int##bits##x##size##_altivec_cmplt, \
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273 v##sign##int##bits##x##size##_altivec_cmple, \
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274 v##sign##int##bits##x##size##_altivec_cmpeq, \
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275 v##sign##int##bits##x##size##_altivec_cmpge, \
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276 v##sign##int##bits##x##size##_altivec_cmpgt, \
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277 };
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278
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279 #define VEC_DEFINE_OPERATIONS(bits, size) \
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280 VEC_DEFINE_OPERATIONS_SIGN( , , bits, size) \
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281 VEC_DEFINE_OPERATIONS_SIGN(u, U, bits, size)
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282
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283 VEC_DEFINE_OPERATIONS(8, 16)
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284 VEC_DEFINE_OPERATIONS(16, 8)
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285 VEC_DEFINE_OPERATIONS(32, 4)