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annotate runtime/import/ldc/intrinsics.di @ 883:b52d5de7783f

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GC defines and linkage changes.
author Christian Kamm <kamm incasoftware de>
date Thu, 08 Jan 2009 18:20:02 +0100
parents 4ac97ec7c18e
children 7a0238db1962
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1 /*
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2 * This module holds declarations to LLVM intrinsics.
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3 *
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4 * See the LLVM language reference for more information:
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5 *
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6 * - http://llvm.org/docs/LangRef.html#intrinsics
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7 *
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8 */
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9
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10 module ldc.intrinsics;
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12 // Check for the right compiler
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13 version(LDC)
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14 {
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15 // OK
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16 }
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17 else
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18 {
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19 static assert(false, "This module is only valid for LDC");
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20 }
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22 //
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23 // CODE GENERATOR INTRINSICS
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24 //
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27 // The 'llvm.returnaddress' intrinsic attempts to compute a target-specific value indicating the return address of the current function or one of its callers.
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29 pragma(intrinsic, "llvm.returnaddress")
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30 void* llvm_returnaddress(uint level);
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33 // The 'llvm.frameaddress' intrinsic attempts to return the target-specific frame pointer value for the specified stack frame.
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35 pragma(intrinsic, "llvm.frameaddress")
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36 void* llvm_frameaddress(uint level);
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39 // The 'llvm.stacksave' intrinsic is used to remember the current state of the function stack, for use with llvm.stackrestore. This is useful for implementing language features like scoped automatic variable sized arrays in C99.
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41 pragma(intrinsic, "llvm.stacksave")
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42 void* llvm_stacksave();
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45 // The 'llvm.stackrestore' intrinsic is used to restore the state of the function stack to the state it was in when the corresponding llvm.stacksave intrinsic executed. This is useful for implementing language features like scoped automatic variable sized arrays in C99.
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47 pragma(intrinsic, "llvm.stackrestore")
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48 void llvm_stackrestore(void* ptr);
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51 // The 'llvm.prefetch' intrinsic is a hint to the code generator to insert a prefetch instruction if supported; otherwise, it is a noop. Prefetches have no effect on the behavior of the program but can change its performance characteristics.
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53 pragma(intrinsic, "llvm.prefetch")
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54 void llvm_prefetch(void* ptr, uint rw, uint locality);
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57 // The 'llvm.pcmarker' intrinsic is a method to export a Program Counter (PC) in a region of code to simulators and other tools. The method is target specific, but it is expected that the marker will use exported symbols to transmit the PC of the marker. The marker makes no guarantees that it will remain with any specific instruction after optimizations. It is possible that the presence of a marker will inhibit optimizations. The intended use is to be inserted after optimizations to allow correlations of simulation runs.
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58
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59 pragma(intrinsic, "llvm.pcmarker")
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60 void llvm_pcmarker(uint id);
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63 // The 'llvm.readcyclecounter' intrinsic provides access to the cycle counter register (or similar low latency, high accuracy clocks) on those targets that support it. On X86, it should map to RDTSC. On Alpha, it should map to RPCC. As the backing counters overflow quickly (on the order of 9 seconds on alpha), this should only be used for small timings.
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64
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65 pragma(intrinsic, "llvm.readcyclecounter")
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66 ulong readcyclecounter();
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71 //
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72 // STANDARD C LIBRARY INTRINSICS
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73 //
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76 // The 'llvm.memcpy.*' intrinsics copy a block of memory from the source location to the destination location.
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77 // Note that, unlike the standard libc function, the llvm.memcpy.* intrinsics do not return a value, and takes an extra alignment argument.
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79 pragma(intrinsic, "llvm.memcpy.i32")
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80 void llvm_memcpy_i32(void* dst, void* src, uint len, uint alignment);
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81 pragma(intrinsic, "llvm.memcpy.i64")
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82 void llvm_memcpy_i64(void* dst, void* src, ulong len, uint alignment);
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83
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85 // The 'llvm.memmove.*' intrinsics move a block of memory from the source location to the destination location. It is similar to the 'llvm.memcpy' intrinsic but allows the two memory locations to overlap.
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86 // Note that, unlike the standard libc function, the llvm.memmove.* intrinsics do not return a value, and takes an extra alignment argument.
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88 pragma(intrinsic, "llvm.memmove.i32")
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89 void llvm_memmove_i32(void* dst, void* src, uint len, uint alignment);
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90 pragma(intrinsic, "llvm.memmove.i64")
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91 void llvm_memmove_i64(void* dst, void* src, ulong len, int alignment);
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92
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94 // The 'llvm.memset.*' intrinsics fill a block of memory with a particular byte value.
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95 // Note that, unlike the standard libc function, the llvm.memset intrinsic does not return a value, and takes an extra alignment argument.
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96
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97 pragma(intrinsic, "llvm.memset.i32")
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98 void llvm_memset_i32(void* dst, ubyte val, uint len, uint alignment);
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99 pragma(intrinsic, "llvm.memset.i64")
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100 void llvm_memset_i64(void* dst, ubyte val, ulong len, uint alignment);
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101
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102
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103 // The 'llvm.sqrt' intrinsics return the sqrt of the specified operand, returning the same value as the libm 'sqrt' functions would. Unlike sqrt in libm, however, llvm.sqrt has undefined behavior for negative numbers other than -0.0 (which allows for better optimization, because there is no need to worry about errno being set). llvm.sqrt(-0.0) is defined to return -0.0 like IEEE sqrt.
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104
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105 pragma(intrinsic, "llvm.sqrt.f32")
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106 float llvm_sqrt_f32(float val);
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107 pragma(intrinsic, "llvm.sqrt.f64")
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108 double llvm_sqrt_f64(double val);
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109 version(X86)
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110 {
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111 pragma(intrinsic, "llvm.sqrt.f80")
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112 real llvm_sqrt_f80(real val);
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113 }
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114
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115 version(X86_64)
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116 {
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117 pragma(intrinsic, "llvm.sqrt.f80")
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118 real llvm_sqrt_f80(real val);
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119 }
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120
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121
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122 // The 'llvm.sin.*' intrinsics return the sine of the operand.
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123
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124 pragma(intrinsic, "llvm.sin.f32")
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125 float llvm_sin_f32(float val);
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126 pragma(intrinsic, "llvm.sin.f64")
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127 double llvm_sin_f64(double val);
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128 version(X86)
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129 {
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130 pragma(intrinsic, "llvm.sin.f80")
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131 real llvm_sin_f80(real val);
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132 }
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133
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134 version(X86_64)
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135 {
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136 pragma(intrinsic, "llvm.sin.f80")
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137 real llvm_sin_f80(real val);
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138 }
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139
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140
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141 // The 'llvm.cos.*' intrinsics return the cosine of the operand.
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142
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143 pragma(intrinsic, "llvm.cos.f32")
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144 float llvm_cos_f32(float val);
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145 pragma(intrinsic, "llvm.cos.f64")
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146 double llvm_cos_f64(double val);
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147 version(X86)
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148 {
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149 pragma(intrinsic, "llvm.cos.f80")
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150 real llvm_cos_f80(real val);
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151 }
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152
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153 version(X86_64)
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154 {
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155 pragma(intrinsic, "llvm.cos.f80")
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156 real llvm_cos_f80(real val);
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157 }
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158
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159
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160 // The 'llvm.powi.*' intrinsics return the first operand raised to the specified (positive or negative) power. The order of evaluation of multiplications is not defined. When a vector of floating point type is used, the second argument remains a scalar integer value.
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161
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162 pragma(intrinsic, "llvm.powi.f32")
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163 float llvm_powi_f32(float val, int power);
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164
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165 pragma(intrinsic, "llvm.powi.f64")
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166 double llvm_powi_f64(double val, int power);
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167 version(X86)
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168 {
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169 pragma(intrinsic, "llvm.powi.f80")
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170 real llvm_powi_f80(real val, int power);
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171 }
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172
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173 version(X86_64)
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174 {
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175 pragma(intrinsic, "llvm.powi.f80")
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176 real llvm_powi_f80(real val, int power);
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177 }
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178
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179 // The 'llvm.pow.*' intrinsics return the first operand raised to the specified (positive or negative) power.
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180
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181 pragma(intrinsic, "llvm.pow.f32")
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182 float llvm_pow_f32(float val, float power);
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183
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184 pragma(intrinsic, "llvm.pow.f64")
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185 double llvm_pow_f64(double val, double power);
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186 version(X86)
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187 {
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188 pragma(intrinsic, "llvm.pow.f80")
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189 real llvm_pow_f80(real val, real power);
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190 }
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191
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192 version(X86_64)
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193 {
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194 pragma(intrinsic, "llvm.pow.f80")
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195 real llvm_pow_f80(real val, real power);
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196 }
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197
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198
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199 //
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200 // BIT MANIPULATION INTRINSICS
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201 //
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202
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203 // The 'llvm.bswap' family of intrinsics is used to byte swap integer values with an even number of bytes (positive multiple of 16 bits). These are useful for performing operations on data that is not in the target's native byte order.
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204
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205 pragma(intrinsic, "llvm.bswap.i16.i16")
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206 ushort llvm_bswap_i16(ushort val);
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207
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208 pragma(intrinsic, "llvm.bswap.i32.i32")
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209 uint llvm_bswap_i32(uint val);
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210
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211 pragma(intrinsic, "llvm.bswap.i64.i64")
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212 ulong llvm_bswap_i64(ulong val);
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213
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214
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215 // The 'llvm.ctpop' family of intrinsics counts the number of bits set in a value.
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216
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217 pragma(intrinsic, "llvm.ctpop.i8")
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218 ubyte llvm_ctpop_i8(ubyte src);
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219
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220 pragma(intrinsic, "llvm.ctpop.i16")
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221 ushort llvm_ctpop_i16(ushort src);
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222
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223 pragma(intrinsic, "llvm.ctpop.i32")
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224 uint llvm_ctpop_i32(uint src);
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225
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226 pragma(intrinsic, "llvm.ctpop.i64")
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227 ulong llvm_ctpop_i64(ulong src);
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228
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229
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230 // The 'llvm.ctlz' family of intrinsic functions counts the number of leading zeros in a variable.
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231
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232 pragma(intrinsic, "llvm.ctlz.i8")
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233 ubyte llvm_ctlz_i8(ubyte src);
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234
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235 pragma(intrinsic, "llvm.ctlz.i16")
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236 ushort llvm_ctlz_i16(ushort src);
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237
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238 pragma(intrinsic, "llvm.ctlz.i32")
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239 uint llvm_ctlz_i32(uint src);
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240
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241 pragma(intrinsic, "llvm.ctlz.i64")
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242 ulong llvm_ctlz_i64(ulong src);
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243
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244
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245 // The 'llvm.cttz' family of intrinsic functions counts the number of trailing zeros.
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246
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247 pragma(intrinsic, "llvm.cttz.i8")
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248 ubyte llvm_cttz_i8(ubyte src);
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249
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250 pragma(intrinsic, "llvm.cttz.i16")
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251 ushort llvm_cttz_i16(ushort src);
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252
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253 pragma(intrinsic, "llvm.cttz.i32")
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254 uint llvm_cttz_i32(uint src);
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255
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256 pragma(intrinsic, "llvm.cttz.i64")
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257 ulong llvm_cttz_i64(ulong src);
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258
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259
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260 // The 'llvm.part.select' family of intrinsic functions selects a range of bits from an integer value and returns them in the same bit width as the original value.
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261
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262 pragma(intrinsic, "llvm.part.select.i8")
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263 ubyte llvm_part_select_i(ubyte val, uint loBit, uint hiBit);
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264
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265 pragma(intrinsic, "llvm.part.select.i16")
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266 ushort llvm_part_select_i(ushort val, uint loBit, uint hiBit);
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267
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268 pragma(intrinsic, "llvm.part.select.i32")
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269 uint llvm_part_select_i(uint val, uint loBit, uint hiBit);
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270
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271 pragma(intrinsic, "llvm.part.select.i64")
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272 ulong llvm_part_select_i(ulong val, uint loBit, uint hiBit);
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273
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274
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275 // The 'llvm.part.set' family of intrinsic functions replaces a range of bits in an integer value with another integer value. It returns the integer with the replaced bits.
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276
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277 // TODO
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278 // declare i17 @llvm.part.set.i17.i9 (i17 %val, i9 %repl, i32 %lo, i32 %hi)
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279 // declare i29 @llvm.part.set.i29.i9 (i29 %val, i9 %repl, i32 %lo, i32 %hi)
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280
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281
443
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282
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283
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284 //
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285 // ATOMIC OPERATIONS AND SYNCHRONIZATION INTRINSICS
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286 //
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287
527
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288 // The llvm.memory.barrier intrinsic guarantees ordering between specific pairs of memory access types.
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289
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290 pragma(intrinsic, "llvm.memory.barrier")
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291 void llvm_memory_barrier(bool ll, bool ls, bool sl, bool ss, bool device);
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292
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293 // This loads a value in memory and compares it to a given value. If they are equal, it stores a new value into the memory.
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294
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295 pragma(intrinsic, "llvm.atomic.cmp.swap.i#.p0i#")
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296 T llvm_atomic_cmp_swap(T)(T* ptr, T cmp, T val);
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297
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298 // This intrinsic loads the value stored in memory at ptr and yields the value from memory. It then stores the value in val in the memory at ptr.
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299
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300 pragma(intrinsic, "llvm.atomic.swap.i#.p0i#")
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301 T llvm_atomic_swap(T)(T* ptr, T val);
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302
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303 // This intrinsic adds delta to the value stored in memory at ptr. It yields the original value at ptr.
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304
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305 pragma(intrinsic, "llvm.atomic.load.add.i#.p0i#")
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306 T llvm_atomic_load_add(T)(T* ptr, T val);
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307
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308 // This intrinsic subtracts delta to the value stored in memory at ptr. It yields the original value at ptr.
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309
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310 pragma(intrinsic, "llvm.atomic.load.sub.i#.p0i#")
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311 T llvm_atomic_load_sub(T)(T* ptr, T val);
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312
527
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313 // These intrinsics bitwise the operation (and, nand, or, xor) delta to the value stored in memory at ptr. It yields the original value at ptr.
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314
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315 pragma(intrinsic, "llvm.atomic.load.and.i#.p0i#")
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316 T llvm_atomic_load_and(T)(T* ptr, T val);
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317 pragma(intrinsic, "llvm.atomic.load.nand.i#.p0i#")
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318 T llvm_atomic_load_nand(T)(T* ptr, T val);
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319 pragma(intrinsic, "llvm.atomic.load.or.i#.p0i#")
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320 T llvm_atomic_load_or(T)(T* ptr, T val);
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321 pragma(intrinsic, "llvm.atomic.load.xor.i#.p0i#")
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322 T llvm_atomic_load_xor(T)(T* ptr, T val);
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323
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324 // These intrinsics takes the signed or unsigned minimum or maximum of delta and the value stored in memory at ptr. It yields the original value at ptr.
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325
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326 pragma(intrinsic, "llvm.atomic.load.max.i#.p0i#")
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327 T llvm_atomic_load_max(T)(T* ptr, T val);
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328 pragma(intrinsic, "llvm.atomic.load.min.i#.p0i#")
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329 T llvm_atomic_load_min(T)(T* ptr, T val);
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330 pragma(intrinsic, "llvm.atomic.load.umax.i#.p0i#")
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331 T llvm_atomic_load_umax(T)(T* ptr, T val);
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332 pragma(intrinsic, "llvm.atomic.load.umin.i#.p0i#")
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333 T llvm_atomic_load_umin(T)(T* ptr, T val);
443
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334
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335 //
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336 // GENERAL INTRINSICS
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337 //
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338
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339
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340 // This intrinsics is lowered to the target dependent trap instruction. If the target does not have a trap instruction, this intrinsic will be lowered to the call of the abort() function.
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341
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342 pragma(intrinsic, "llvm.trap")
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343 void llvm_trap();