1 //===--- AMDGPU.cpp - Implement AMDGPU target feature support -------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements AMDGPU TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "AMDGPU.h" 14 #include "clang/Basic/Builtins.h" 15 #include "clang/Basic/CodeGenOptions.h" 16 #include "clang/Basic/LangOptions.h" 17 #include "clang/Basic/MacroBuilder.h" 18 #include "clang/Basic/TargetBuiltins.h" 19 #include "llvm/ADT/StringSwitch.h" 20 #include "llvm/Frontend/OpenMP/OMPGridValues.h" 21 #include "llvm/IR/DataLayout.h" 22 23 using namespace clang; 24 using namespace clang::targets; 25 26 namespace clang { 27 namespace targets { 28 29 // If you edit the description strings, make sure you update 30 // getPointerWidthV(). 31 32 static const char *const DataLayoutStringR600 = 33 "e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" 34 "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"; 35 36 static const char *const DataLayoutStringAMDGCN = 37 "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32" 38 "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" 39 "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5" 40 "-ni:7"; 41 42 const LangASMap AMDGPUTargetInfo::AMDGPUDefIsGenMap = { 43 Generic, // Default 44 Global, // opencl_global 45 Local, // opencl_local 46 Constant, // opencl_constant 47 Private, // opencl_private 48 Generic, // opencl_generic 49 Global, // opencl_global_device 50 Global, // opencl_global_host 51 Global, // cuda_device 52 Constant, // cuda_constant 53 Local, // cuda_shared 54 Generic, // ptr32_sptr 55 Generic, // ptr32_uptr 56 Generic // ptr64 57 }; 58 59 const LangASMap AMDGPUTargetInfo::AMDGPUDefIsPrivMap = { 60 Private, // Default 61 Global, // opencl_global 62 Local, // opencl_local 63 Constant, // opencl_constant 64 Private, // opencl_private 65 Generic, // opencl_generic 66 Global, // opencl_global_device 67 Global, // opencl_global_host 68 Global, // cuda_device 69 Constant, // cuda_constant 70 Local, // cuda_shared 71 Generic, // ptr32_sptr 72 Generic, // ptr32_uptr 73 Generic // ptr64 74 75 }; 76 } // namespace targets 77 } // namespace clang 78 79 const Builtin::Info AMDGPUTargetInfo::BuiltinInfo[] = { 80 #define BUILTIN(ID, TYPE, ATTRS) \ 81 {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr}, 82 #define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \ 83 {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE}, 84 #include "clang/Basic/BuiltinsAMDGPU.def" 85 }; 86 87 const char *const AMDGPUTargetInfo::GCCRegNames[] = { 88 "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", 89 "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", 90 "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", 91 "v27", "v28", "v29", "v30", "v31", "v32", "v33", "v34", "v35", 92 "v36", "v37", "v38", "v39", "v40", "v41", "v42", "v43", "v44", 93 "v45", "v46", "v47", "v48", "v49", "v50", "v51", "v52", "v53", 94 "v54", "v55", "v56", "v57", "v58", "v59", "v60", "v61", "v62", 95 "v63", "v64", "v65", "v66", "v67", "v68", "v69", "v70", "v71", 96 "v72", "v73", "v74", "v75", "v76", "v77", "v78", "v79", "v80", 97 "v81", "v82", "v83", "v84", "v85", "v86", "v87", "v88", "v89", 98 "v90", "v91", "v92", "v93", "v94", "v95", "v96", "v97", "v98", 99 "v99", "v100", "v101", "v102", "v103", "v104", "v105", "v106", "v107", 100 "v108", "v109", "v110", "v111", "v112", "v113", "v114", "v115", "v116", 101 "v117", "v118", "v119", "v120", "v121", "v122", "v123", "v124", "v125", 102 "v126", "v127", "v128", "v129", "v130", "v131", "v132", "v133", "v134", 103 "v135", "v136", "v137", "v138", "v139", "v140", "v141", "v142", "v143", 104 "v144", "v145", "v146", "v147", "v148", "v149", "v150", "v151", "v152", 105 "v153", "v154", "v155", "v156", "v157", "v158", "v159", "v160", "v161", 106 "v162", "v163", "v164", "v165", "v166", "v167", "v168", "v169", "v170", 107 "v171", "v172", "v173", "v174", "v175", "v176", "v177", "v178", "v179", 108 "v180", "v181", "v182", "v183", "v184", "v185", "v186", "v187", "v188", 109 "v189", "v190", "v191", "v192", "v193", "v194", "v195", "v196", "v197", 110 "v198", "v199", "v200", "v201", "v202", "v203", "v204", "v205", "v206", 111 "v207", "v208", "v209", "v210", "v211", "v212", "v213", "v214", "v215", 112 "v216", "v217", "v218", "v219", "v220", "v221", "v222", "v223", "v224", 113 "v225", "v226", "v227", "v228", "v229", "v230", "v231", "v232", "v233", 114 "v234", "v235", "v236", "v237", "v238", "v239", "v240", "v241", "v242", 115 "v243", "v244", "v245", "v246", "v247", "v248", "v249", "v250", "v251", 116 "v252", "v253", "v254", "v255", "s0", "s1", "s2", "s3", "s4", 117 "s5", "s6", "s7", "s8", "s9", "s10", "s11", "s12", "s13", 118 "s14", "s15", "s16", "s17", "s18", "s19", "s20", "s21", "s22", 119 "s23", "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", 120 "s32", "s33", "s34", "s35", "s36", "s37", "s38", "s39", "s40", 121 "s41", "s42", "s43", "s44", "s45", "s46", "s47", "s48", "s49", 122 "s50", "s51", "s52", "s53", "s54", "s55", "s56", "s57", "s58", 123 "s59", "s60", "s61", "s62", "s63", "s64", "s65", "s66", "s67", 124 "s68", "s69", "s70", "s71", "s72", "s73", "s74", "s75", "s76", 125 "s77", "s78", "s79", "s80", "s81", "s82", "s83", "s84", "s85", 126 "s86", "s87", "s88", "s89", "s90", "s91", "s92", "s93", "s94", 127 "s95", "s96", "s97", "s98", "s99", "s100", "s101", "s102", "s103", 128 "s104", "s105", "s106", "s107", "s108", "s109", "s110", "s111", "s112", 129 "s113", "s114", "s115", "s116", "s117", "s118", "s119", "s120", "s121", 130 "s122", "s123", "s124", "s125", "s126", "s127", "exec", "vcc", "scc", 131 "m0", "flat_scratch", "exec_lo", "exec_hi", "vcc_lo", "vcc_hi", 132 "flat_scratch_lo", "flat_scratch_hi", 133 "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", 134 "a9", "a10", "a11", "a12", "a13", "a14", "a15", "a16", "a17", 135 "a18", "a19", "a20", "a21", "a22", "a23", "a24", "a25", "a26", 136 "a27", "a28", "a29", "a30", "a31", "a32", "a33", "a34", "a35", 137 "a36", "a37", "a38", "a39", "a40", "a41", "a42", "a43", "a44", 138 "a45", "a46", "a47", "a48", "a49", "a50", "a51", "a52", "a53", 139 "a54", "a55", "a56", "a57", "a58", "a59", "a60", "a61", "a62", 140 "a63", "a64", "a65", "a66", "a67", "a68", "a69", "a70", "a71", 141 "a72", "a73", "a74", "a75", "a76", "a77", "a78", "a79", "a80", 142 "a81", "a82", "a83", "a84", "a85", "a86", "a87", "a88", "a89", 143 "a90", "a91", "a92", "a93", "a94", "a95", "a96", "a97", "a98", 144 "a99", "a100", "a101", "a102", "a103", "a104", "a105", "a106", "a107", 145 "a108", "a109", "a110", "a111", "a112", "a113", "a114", "a115", "a116", 146 "a117", "a118", "a119", "a120", "a121", "a122", "a123", "a124", "a125", 147 "a126", "a127", "a128", "a129", "a130", "a131", "a132", "a133", "a134", 148 "a135", "a136", "a137", "a138", "a139", "a140", "a141", "a142", "a143", 149 "a144", "a145", "a146", "a147", "a148", "a149", "a150", "a151", "a152", 150 "a153", "a154", "a155", "a156", "a157", "a158", "a159", "a160", "a161", 151 "a162", "a163", "a164", "a165", "a166", "a167", "a168", "a169", "a170", 152 "a171", "a172", "a173", "a174", "a175", "a176", "a177", "a178", "a179", 153 "a180", "a181", "a182", "a183", "a184", "a185", "a186", "a187", "a188", 154 "a189", "a190", "a191", "a192", "a193", "a194", "a195", "a196", "a197", 155 "a198", "a199", "a200", "a201", "a202", "a203", "a204", "a205", "a206", 156 "a207", "a208", "a209", "a210", "a211", "a212", "a213", "a214", "a215", 157 "a216", "a217", "a218", "a219", "a220", "a221", "a222", "a223", "a224", 158 "a225", "a226", "a227", "a228", "a229", "a230", "a231", "a232", "a233", 159 "a234", "a235", "a236", "a237", "a238", "a239", "a240", "a241", "a242", 160 "a243", "a244", "a245", "a246", "a247", "a248", "a249", "a250", "a251", 161 "a252", "a253", "a254", "a255" 162 }; 163 164 ArrayRef<const char *> AMDGPUTargetInfo::getGCCRegNames() const { 165 return llvm::makeArrayRef(GCCRegNames); 166 } 167 168 bool AMDGPUTargetInfo::initFeatureMap( 169 llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, StringRef CPU, 170 const std::vector<std::string> &FeatureVec) const { 171 172 using namespace llvm::AMDGPU; 173 174 // XXX - What does the member GPU mean if device name string passed here? 175 if (isAMDGCN(getTriple())) { 176 switch (llvm::AMDGPU::parseArchAMDGCN(CPU)) { 177 case GK_GFX1033: 178 case GK_GFX1032: 179 case GK_GFX1031: 180 case GK_GFX1030: 181 Features["ci-insts"] = true; 182 Features["dot1-insts"] = true; 183 Features["dot2-insts"] = true; 184 Features["dot5-insts"] = true; 185 Features["dot6-insts"] = true; 186 Features["dl-insts"] = true; 187 Features["flat-address-space"] = true; 188 Features["16-bit-insts"] = true; 189 Features["dpp"] = true; 190 Features["gfx8-insts"] = true; 191 Features["gfx9-insts"] = true; 192 Features["gfx10-insts"] = true; 193 Features["gfx10-3-insts"] = true; 194 Features["s-memrealtime"] = true; 195 break; 196 case GK_GFX1012: 197 case GK_GFX1011: 198 Features["dot1-insts"] = true; 199 Features["dot2-insts"] = true; 200 Features["dot5-insts"] = true; 201 Features["dot6-insts"] = true; 202 LLVM_FALLTHROUGH; 203 case GK_GFX1010: 204 Features["dl-insts"] = true; 205 Features["ci-insts"] = true; 206 Features["flat-address-space"] = true; 207 Features["16-bit-insts"] = true; 208 Features["dpp"] = true; 209 Features["gfx8-insts"] = true; 210 Features["gfx9-insts"] = true; 211 Features["gfx10-insts"] = true; 212 Features["s-memrealtime"] = true; 213 break; 214 case GK_GFX908: 215 Features["dot3-insts"] = true; 216 Features["dot4-insts"] = true; 217 Features["dot5-insts"] = true; 218 Features["dot6-insts"] = true; 219 Features["mai-insts"] = true; 220 LLVM_FALLTHROUGH; 221 case GK_GFX906: 222 Features["dl-insts"] = true; 223 Features["dot1-insts"] = true; 224 Features["dot2-insts"] = true; 225 LLVM_FALLTHROUGH; 226 case GK_GFX90C: 227 case GK_GFX909: 228 case GK_GFX904: 229 case GK_GFX902: 230 case GK_GFX900: 231 Features["gfx9-insts"] = true; 232 LLVM_FALLTHROUGH; 233 case GK_GFX810: 234 case GK_GFX805: 235 case GK_GFX803: 236 case GK_GFX802: 237 case GK_GFX801: 238 Features["gfx8-insts"] = true; 239 Features["16-bit-insts"] = true; 240 Features["dpp"] = true; 241 Features["s-memrealtime"] = true; 242 LLVM_FALLTHROUGH; 243 case GK_GFX705: 244 case GK_GFX704: 245 case GK_GFX703: 246 case GK_GFX702: 247 case GK_GFX701: 248 case GK_GFX700: 249 Features["ci-insts"] = true; 250 Features["flat-address-space"] = true; 251 LLVM_FALLTHROUGH; 252 case GK_GFX602: 253 case GK_GFX601: 254 case GK_GFX600: 255 break; 256 case GK_NONE: 257 break; 258 default: 259 llvm_unreachable("Unhandled GPU!"); 260 } 261 } else { 262 if (CPU.empty()) 263 CPU = "r600"; 264 265 switch (llvm::AMDGPU::parseArchR600(CPU)) { 266 case GK_CAYMAN: 267 case GK_CYPRESS: 268 case GK_RV770: 269 case GK_RV670: 270 // TODO: Add fp64 when implemented. 271 break; 272 case GK_TURKS: 273 case GK_CAICOS: 274 case GK_BARTS: 275 case GK_SUMO: 276 case GK_REDWOOD: 277 case GK_JUNIPER: 278 case GK_CEDAR: 279 case GK_RV730: 280 case GK_RV710: 281 case GK_RS880: 282 case GK_R630: 283 case GK_R600: 284 break; 285 default: 286 llvm_unreachable("Unhandled GPU!"); 287 } 288 } 289 290 return TargetInfo::initFeatureMap(Features, Diags, CPU, FeatureVec); 291 } 292 293 void AMDGPUTargetInfo::fillValidCPUList( 294 SmallVectorImpl<StringRef> &Values) const { 295 if (isAMDGCN(getTriple())) 296 llvm::AMDGPU::fillValidArchListAMDGCN(Values); 297 else 298 llvm::AMDGPU::fillValidArchListR600(Values); 299 } 300 301 void AMDGPUTargetInfo::setAddressSpaceMap(bool DefaultIsPrivate) { 302 AddrSpaceMap = DefaultIsPrivate ? &AMDGPUDefIsPrivMap : &AMDGPUDefIsGenMap; 303 } 304 305 AMDGPUTargetInfo::AMDGPUTargetInfo(const llvm::Triple &Triple, 306 const TargetOptions &Opts) 307 : TargetInfo(Triple), 308 GPUKind(isAMDGCN(Triple) ? 309 llvm::AMDGPU::parseArchAMDGCN(Opts.CPU) : 310 llvm::AMDGPU::parseArchR600(Opts.CPU)), 311 GPUFeatures(isAMDGCN(Triple) ? 312 llvm::AMDGPU::getArchAttrAMDGCN(GPUKind) : 313 llvm::AMDGPU::getArchAttrR600(GPUKind)) { 314 resetDataLayout(isAMDGCN(getTriple()) ? DataLayoutStringAMDGCN 315 : DataLayoutStringR600); 316 assert(DataLayout->getAllocaAddrSpace() == Private); 317 GridValues = llvm::omp::AMDGPUGpuGridValues; 318 319 setAddressSpaceMap(Triple.getOS() == llvm::Triple::Mesa3D || 320 !isAMDGCN(Triple)); 321 UseAddrSpaceMapMangling = true; 322 323 HasLegalHalfType = true; 324 HasFloat16 = true; 325 WavefrontSize = GPUFeatures & llvm::AMDGPU::FEATURE_WAVE32 ? 32 : 64; 326 327 // Set pointer width and alignment for target address space 0. 328 PointerWidth = PointerAlign = DataLayout->getPointerSizeInBits(); 329 if (getMaxPointerWidth() == 64) { 330 LongWidth = LongAlign = 64; 331 SizeType = UnsignedLong; 332 PtrDiffType = SignedLong; 333 IntPtrType = SignedLong; 334 } 335 336 MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; 337 } 338 339 void AMDGPUTargetInfo::adjust(LangOptions &Opts) { 340 TargetInfo::adjust(Opts); 341 // ToDo: There are still a few places using default address space as private 342 // address space in OpenCL, which needs to be cleaned up, then Opts.OpenCL 343 // can be removed from the following line. 344 setAddressSpaceMap(/*DefaultIsPrivate=*/Opts.OpenCL || 345 !isAMDGCN(getTriple())); 346 } 347 348 ArrayRef<Builtin::Info> AMDGPUTargetInfo::getTargetBuiltins() const { 349 return llvm::makeArrayRef(BuiltinInfo, clang::AMDGPU::LastTSBuiltin - 350 Builtin::FirstTSBuiltin); 351 } 352 353 void AMDGPUTargetInfo::getTargetDefines(const LangOptions &Opts, 354 MacroBuilder &Builder) const { 355 Builder.defineMacro("__AMD__"); 356 Builder.defineMacro("__AMDGPU__"); 357 358 if (isAMDGCN(getTriple())) 359 Builder.defineMacro("__AMDGCN__"); 360 else 361 Builder.defineMacro("__R600__"); 362 363 if (GPUKind != llvm::AMDGPU::GK_NONE) { 364 StringRef CanonName = isAMDGCN(getTriple()) ? 365 getArchNameAMDGCN(GPUKind) : getArchNameR600(GPUKind); 366 Builder.defineMacro(Twine("__") + Twine(CanonName) + Twine("__")); 367 if (isAMDGCN(getTriple())) { 368 Builder.defineMacro("__amdgcn_processor__", 369 Twine("\"") + Twine(CanonName) + Twine("\"")); 370 Builder.defineMacro("__amdgcn_target_id__", 371 Twine("\"") + Twine(getTargetID().getValue()) + 372 Twine("\"")); 373 for (auto F : getAllPossibleTargetIDFeatures(getTriple(), CanonName)) { 374 auto Loc = OffloadArchFeatures.find(F); 375 if (Loc != OffloadArchFeatures.end()) { 376 std::string NewF = F.str(); 377 std::replace(NewF.begin(), NewF.end(), '-', '_'); 378 Builder.defineMacro(Twine("__amdgcn_feature_") + Twine(NewF) + 379 Twine("__"), 380 Loc->second ? "1" : "0"); 381 } 382 } 383 } 384 } 385 386 // TODO: __HAS_FMAF__, __HAS_LDEXPF__, __HAS_FP64__ are deprecated and will be 387 // removed in the near future. 388 if (hasFMAF()) 389 Builder.defineMacro("__HAS_FMAF__"); 390 if (hasFastFMAF()) 391 Builder.defineMacro("FP_FAST_FMAF"); 392 if (hasLDEXPF()) 393 Builder.defineMacro("__HAS_LDEXPF__"); 394 if (hasFP64()) 395 Builder.defineMacro("__HAS_FP64__"); 396 if (hasFastFMA()) 397 Builder.defineMacro("FP_FAST_FMA"); 398 399 Builder.defineMacro("__AMDGCN_WAVEFRONT_SIZE", Twine(WavefrontSize)); 400 } 401 402 void AMDGPUTargetInfo::setAuxTarget(const TargetInfo *Aux) { 403 assert(HalfFormat == Aux->HalfFormat); 404 assert(FloatFormat == Aux->FloatFormat); 405 assert(DoubleFormat == Aux->DoubleFormat); 406 407 // On x86_64 long double is 80-bit extended precision format, which is 408 // not supported by AMDGPU. 128-bit floating point format is also not 409 // supported by AMDGPU. Therefore keep its own format for these two types. 410 auto SaveLongDoubleFormat = LongDoubleFormat; 411 auto SaveFloat128Format = Float128Format; 412 copyAuxTarget(Aux); 413 LongDoubleFormat = SaveLongDoubleFormat; 414 Float128Format = SaveFloat128Format; 415 // For certain builtin types support on the host target, claim they are 416 // support to pass the compilation of the host code during the device-side 417 // compilation. 418 // FIXME: As the side effect, we also accept `__float128` uses in the device 419 // code. To rejct these builtin types supported in the host target but not in 420 // the device target, one approach would support `device_builtin` attribute 421 // so that we could tell the device builtin types from the host ones. The 422 // also solves the different representations of the same builtin type, such 423 // as `size_t` in the MSVC environment. 424 if (Aux->hasFloat128Type()) { 425 HasFloat128 = true; 426 Float128Format = DoubleFormat; 427 } 428 } 429