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 22 using namespace clang; 23 using namespace clang::targets; 24 25 namespace clang { 26 namespace targets { 27 28 // If you edit the description strings, make sure you update 29 // getPointerWidthV(). 30 31 static const char *const DataLayoutStringR600 = 32 "e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" 33 "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1"; 34 35 static const char *const DataLayoutStringAMDGCN = 36 "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32" 37 "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" 38 "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1" 39 "-ni:7"; 40 41 const LangASMap AMDGPUTargetInfo::AMDGPUDefIsGenMap = { 42 Generic, // Default 43 Global, // opencl_global 44 Local, // opencl_local 45 Constant, // opencl_constant 46 Private, // opencl_private 47 Generic, // opencl_generic 48 Global, // opencl_global_device 49 Global, // opencl_global_host 50 Global, // cuda_device 51 Constant, // cuda_constant 52 Local, // cuda_shared 53 Global, // sycl_global 54 Local, // sycl_local 55 Private, // sycl_private 56 Generic, // ptr32_sptr 57 Generic, // ptr32_uptr 58 Generic // ptr64 59 }; 60 61 const LangASMap AMDGPUTargetInfo::AMDGPUDefIsPrivMap = { 62 Private, // Default 63 Global, // opencl_global 64 Local, // opencl_local 65 Constant, // opencl_constant 66 Private, // opencl_private 67 Generic, // opencl_generic 68 Global, // opencl_global_device 69 Global, // opencl_global_host 70 Global, // cuda_device 71 Constant, // cuda_constant 72 Local, // cuda_shared 73 // SYCL address space values for this map are dummy 74 Generic, // sycl_global 75 Generic, // sycl_local 76 Generic, // sycl_private 77 Generic, // ptr32_sptr 78 Generic, // ptr32_uptr 79 Generic // ptr64 80 81 }; 82 } // namespace targets 83 } // namespace clang 84 85 const Builtin::Info AMDGPUTargetInfo::BuiltinInfo[] = { 86 #define BUILTIN(ID, TYPE, ATTRS) \ 87 {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr}, 88 #define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \ 89 {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE}, 90 #include "clang/Basic/BuiltinsAMDGPU.def" 91 }; 92 93 const char *const AMDGPUTargetInfo::GCCRegNames[] = { 94 "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", 95 "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", 96 "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", 97 "v27", "v28", "v29", "v30", "v31", "v32", "v33", "v34", "v35", 98 "v36", "v37", "v38", "v39", "v40", "v41", "v42", "v43", "v44", 99 "v45", "v46", "v47", "v48", "v49", "v50", "v51", "v52", "v53", 100 "v54", "v55", "v56", "v57", "v58", "v59", "v60", "v61", "v62", 101 "v63", "v64", "v65", "v66", "v67", "v68", "v69", "v70", "v71", 102 "v72", "v73", "v74", "v75", "v76", "v77", "v78", "v79", "v80", 103 "v81", "v82", "v83", "v84", "v85", "v86", "v87", "v88", "v89", 104 "v90", "v91", "v92", "v93", "v94", "v95", "v96", "v97", "v98", 105 "v99", "v100", "v101", "v102", "v103", "v104", "v105", "v106", "v107", 106 "v108", "v109", "v110", "v111", "v112", "v113", "v114", "v115", "v116", 107 "v117", "v118", "v119", "v120", "v121", "v122", "v123", "v124", "v125", 108 "v126", "v127", "v128", "v129", "v130", "v131", "v132", "v133", "v134", 109 "v135", "v136", "v137", "v138", "v139", "v140", "v141", "v142", "v143", 110 "v144", "v145", "v146", "v147", "v148", "v149", "v150", "v151", "v152", 111 "v153", "v154", "v155", "v156", "v157", "v158", "v159", "v160", "v161", 112 "v162", "v163", "v164", "v165", "v166", "v167", "v168", "v169", "v170", 113 "v171", "v172", "v173", "v174", "v175", "v176", "v177", "v178", "v179", 114 "v180", "v181", "v182", "v183", "v184", "v185", "v186", "v187", "v188", 115 "v189", "v190", "v191", "v192", "v193", "v194", "v195", "v196", "v197", 116 "v198", "v199", "v200", "v201", "v202", "v203", "v204", "v205", "v206", 117 "v207", "v208", "v209", "v210", "v211", "v212", "v213", "v214", "v215", 118 "v216", "v217", "v218", "v219", "v220", "v221", "v222", "v223", "v224", 119 "v225", "v226", "v227", "v228", "v229", "v230", "v231", "v232", "v233", 120 "v234", "v235", "v236", "v237", "v238", "v239", "v240", "v241", "v242", 121 "v243", "v244", "v245", "v246", "v247", "v248", "v249", "v250", "v251", 122 "v252", "v253", "v254", "v255", "s0", "s1", "s2", "s3", "s4", 123 "s5", "s6", "s7", "s8", "s9", "s10", "s11", "s12", "s13", 124 "s14", "s15", "s16", "s17", "s18", "s19", "s20", "s21", "s22", 125 "s23", "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", 126 "s32", "s33", "s34", "s35", "s36", "s37", "s38", "s39", "s40", 127 "s41", "s42", "s43", "s44", "s45", "s46", "s47", "s48", "s49", 128 "s50", "s51", "s52", "s53", "s54", "s55", "s56", "s57", "s58", 129 "s59", "s60", "s61", "s62", "s63", "s64", "s65", "s66", "s67", 130 "s68", "s69", "s70", "s71", "s72", "s73", "s74", "s75", "s76", 131 "s77", "s78", "s79", "s80", "s81", "s82", "s83", "s84", "s85", 132 "s86", "s87", "s88", "s89", "s90", "s91", "s92", "s93", "s94", 133 "s95", "s96", "s97", "s98", "s99", "s100", "s101", "s102", "s103", 134 "s104", "s105", "s106", "s107", "s108", "s109", "s110", "s111", "s112", 135 "s113", "s114", "s115", "s116", "s117", "s118", "s119", "s120", "s121", 136 "s122", "s123", "s124", "s125", "s126", "s127", "exec", "vcc", "scc", 137 "m0", "flat_scratch", "exec_lo", "exec_hi", "vcc_lo", "vcc_hi", 138 "flat_scratch_lo", "flat_scratch_hi", 139 "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", 140 "a9", "a10", "a11", "a12", "a13", "a14", "a15", "a16", "a17", 141 "a18", "a19", "a20", "a21", "a22", "a23", "a24", "a25", "a26", 142 "a27", "a28", "a29", "a30", "a31", "a32", "a33", "a34", "a35", 143 "a36", "a37", "a38", "a39", "a40", "a41", "a42", "a43", "a44", 144 "a45", "a46", "a47", "a48", "a49", "a50", "a51", "a52", "a53", 145 "a54", "a55", "a56", "a57", "a58", "a59", "a60", "a61", "a62", 146 "a63", "a64", "a65", "a66", "a67", "a68", "a69", "a70", "a71", 147 "a72", "a73", "a74", "a75", "a76", "a77", "a78", "a79", "a80", 148 "a81", "a82", "a83", "a84", "a85", "a86", "a87", "a88", "a89", 149 "a90", "a91", "a92", "a93", "a94", "a95", "a96", "a97", "a98", 150 "a99", "a100", "a101", "a102", "a103", "a104", "a105", "a106", "a107", 151 "a108", "a109", "a110", "a111", "a112", "a113", "a114", "a115", "a116", 152 "a117", "a118", "a119", "a120", "a121", "a122", "a123", "a124", "a125", 153 "a126", "a127", "a128", "a129", "a130", "a131", "a132", "a133", "a134", 154 "a135", "a136", "a137", "a138", "a139", "a140", "a141", "a142", "a143", 155 "a144", "a145", "a146", "a147", "a148", "a149", "a150", "a151", "a152", 156 "a153", "a154", "a155", "a156", "a157", "a158", "a159", "a160", "a161", 157 "a162", "a163", "a164", "a165", "a166", "a167", "a168", "a169", "a170", 158 "a171", "a172", "a173", "a174", "a175", "a176", "a177", "a178", "a179", 159 "a180", "a181", "a182", "a183", "a184", "a185", "a186", "a187", "a188", 160 "a189", "a190", "a191", "a192", "a193", "a194", "a195", "a196", "a197", 161 "a198", "a199", "a200", "a201", "a202", "a203", "a204", "a205", "a206", 162 "a207", "a208", "a209", "a210", "a211", "a212", "a213", "a214", "a215", 163 "a216", "a217", "a218", "a219", "a220", "a221", "a222", "a223", "a224", 164 "a225", "a226", "a227", "a228", "a229", "a230", "a231", "a232", "a233", 165 "a234", "a235", "a236", "a237", "a238", "a239", "a240", "a241", "a242", 166 "a243", "a244", "a245", "a246", "a247", "a248", "a249", "a250", "a251", 167 "a252", "a253", "a254", "a255" 168 }; 169 170 ArrayRef<const char *> AMDGPUTargetInfo::getGCCRegNames() const { 171 return llvm::makeArrayRef(GCCRegNames); 172 } 173 174 bool AMDGPUTargetInfo::initFeatureMap( 175 llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, StringRef CPU, 176 const std::vector<std::string> &FeatureVec) const { 177 178 using namespace llvm::AMDGPU; 179 180 // XXX - What does the member GPU mean if device name string passed here? 181 if (isAMDGCN(getTriple())) { 182 switch (llvm::AMDGPU::parseArchAMDGCN(CPU)) { 183 case GK_GFX1034: 184 case GK_GFX1033: 185 case GK_GFX1032: 186 case GK_GFX1031: 187 case GK_GFX1030: 188 Features["ci-insts"] = true; 189 Features["dot1-insts"] = true; 190 Features["dot2-insts"] = true; 191 Features["dot5-insts"] = true; 192 Features["dot6-insts"] = true; 193 Features["dot7-insts"] = true; 194 Features["dl-insts"] = true; 195 Features["flat-address-space"] = true; 196 Features["16-bit-insts"] = true; 197 Features["dpp"] = true; 198 Features["gfx8-insts"] = true; 199 Features["gfx9-insts"] = true; 200 Features["gfx10-insts"] = true; 201 Features["gfx10-3-insts"] = true; 202 Features["s-memrealtime"] = true; 203 Features["s-memtime-inst"] = true; 204 break; 205 case GK_GFX1012: 206 case GK_GFX1011: 207 Features["dot1-insts"] = true; 208 Features["dot2-insts"] = true; 209 Features["dot5-insts"] = true; 210 Features["dot6-insts"] = true; 211 Features["dot7-insts"] = true; 212 LLVM_FALLTHROUGH; 213 case GK_GFX1010: 214 Features["dl-insts"] = true; 215 Features["ci-insts"] = true; 216 Features["flat-address-space"] = true; 217 Features["16-bit-insts"] = true; 218 Features["dpp"] = true; 219 Features["gfx8-insts"] = true; 220 Features["gfx9-insts"] = true; 221 Features["gfx10-insts"] = true; 222 Features["s-memrealtime"] = true; 223 Features["s-memtime-inst"] = true; 224 break; 225 case GK_GFX90A: 226 Features["gfx90a-insts"] = true; 227 LLVM_FALLTHROUGH; 228 case GK_GFX908: 229 Features["dot3-insts"] = true; 230 Features["dot4-insts"] = true; 231 Features["dot5-insts"] = true; 232 Features["dot6-insts"] = true; 233 Features["mai-insts"] = true; 234 LLVM_FALLTHROUGH; 235 case GK_GFX906: 236 Features["dl-insts"] = true; 237 Features["dot1-insts"] = true; 238 Features["dot2-insts"] = true; 239 Features["dot7-insts"] = true; 240 LLVM_FALLTHROUGH; 241 case GK_GFX90C: 242 case GK_GFX909: 243 case GK_GFX904: 244 case GK_GFX902: 245 case GK_GFX900: 246 Features["gfx9-insts"] = true; 247 LLVM_FALLTHROUGH; 248 case GK_GFX810: 249 case GK_GFX805: 250 case GK_GFX803: 251 case GK_GFX802: 252 case GK_GFX801: 253 Features["gfx8-insts"] = true; 254 Features["16-bit-insts"] = true; 255 Features["dpp"] = true; 256 Features["s-memrealtime"] = true; 257 LLVM_FALLTHROUGH; 258 case GK_GFX705: 259 case GK_GFX704: 260 case GK_GFX703: 261 case GK_GFX702: 262 case GK_GFX701: 263 case GK_GFX700: 264 Features["ci-insts"] = true; 265 Features["flat-address-space"] = true; 266 LLVM_FALLTHROUGH; 267 case GK_GFX602: 268 case GK_GFX601: 269 case GK_GFX600: 270 Features["s-memtime-inst"] = true; 271 break; 272 case GK_NONE: 273 break; 274 default: 275 llvm_unreachable("Unhandled GPU!"); 276 } 277 } else { 278 if (CPU.empty()) 279 CPU = "r600"; 280 281 switch (llvm::AMDGPU::parseArchR600(CPU)) { 282 case GK_CAYMAN: 283 case GK_CYPRESS: 284 case GK_RV770: 285 case GK_RV670: 286 // TODO: Add fp64 when implemented. 287 break; 288 case GK_TURKS: 289 case GK_CAICOS: 290 case GK_BARTS: 291 case GK_SUMO: 292 case GK_REDWOOD: 293 case GK_JUNIPER: 294 case GK_CEDAR: 295 case GK_RV730: 296 case GK_RV710: 297 case GK_RS880: 298 case GK_R630: 299 case GK_R600: 300 break; 301 default: 302 llvm_unreachable("Unhandled GPU!"); 303 } 304 } 305 306 return TargetInfo::initFeatureMap(Features, Diags, CPU, FeatureVec); 307 } 308 309 void AMDGPUTargetInfo::fillValidCPUList( 310 SmallVectorImpl<StringRef> &Values) const { 311 if (isAMDGCN(getTriple())) 312 llvm::AMDGPU::fillValidArchListAMDGCN(Values); 313 else 314 llvm::AMDGPU::fillValidArchListR600(Values); 315 } 316 317 void AMDGPUTargetInfo::setAddressSpaceMap(bool DefaultIsPrivate) { 318 AddrSpaceMap = DefaultIsPrivate ? &AMDGPUDefIsPrivMap : &AMDGPUDefIsGenMap; 319 } 320 321 AMDGPUTargetInfo::AMDGPUTargetInfo(const llvm::Triple &Triple, 322 const TargetOptions &Opts) 323 : TargetInfo(Triple), 324 GPUKind(isAMDGCN(Triple) ? 325 llvm::AMDGPU::parseArchAMDGCN(Opts.CPU) : 326 llvm::AMDGPU::parseArchR600(Opts.CPU)), 327 GPUFeatures(isAMDGCN(Triple) ? 328 llvm::AMDGPU::getArchAttrAMDGCN(GPUKind) : 329 llvm::AMDGPU::getArchAttrR600(GPUKind)) { 330 resetDataLayout(isAMDGCN(getTriple()) ? DataLayoutStringAMDGCN 331 : DataLayoutStringR600); 332 GridValues = llvm::omp::AMDGPUGpuGridValues; 333 334 setAddressSpaceMap(Triple.getOS() == llvm::Triple::Mesa3D || 335 !isAMDGCN(Triple)); 336 UseAddrSpaceMapMangling = true; 337 338 HasLegalHalfType = true; 339 HasFloat16 = true; 340 WavefrontSize = GPUFeatures & llvm::AMDGPU::FEATURE_WAVE32 ? 32 : 64; 341 AllowAMDGPUUnsafeFPAtomics = Opts.AllowAMDGPUUnsafeFPAtomics; 342 343 // Set pointer width and alignment for target address space 0. 344 PointerWidth = PointerAlign = getPointerWidthV(Generic); 345 if (getMaxPointerWidth() == 64) { 346 LongWidth = LongAlign = 64; 347 SizeType = UnsignedLong; 348 PtrDiffType = SignedLong; 349 IntPtrType = SignedLong; 350 } 351 352 MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; 353 } 354 355 void AMDGPUTargetInfo::adjust(LangOptions &Opts) { 356 TargetInfo::adjust(Opts); 357 // ToDo: There are still a few places using default address space as private 358 // address space in OpenCL, which needs to be cleaned up, then Opts.OpenCL 359 // can be removed from the following line. 360 setAddressSpaceMap(/*DefaultIsPrivate=*/Opts.OpenCL || 361 !isAMDGCN(getTriple())); 362 } 363 364 ArrayRef<Builtin::Info> AMDGPUTargetInfo::getTargetBuiltins() const { 365 return llvm::makeArrayRef(BuiltinInfo, clang::AMDGPU::LastTSBuiltin - 366 Builtin::FirstTSBuiltin); 367 } 368 369 void AMDGPUTargetInfo::getTargetDefines(const LangOptions &Opts, 370 MacroBuilder &Builder) const { 371 Builder.defineMacro("__AMD__"); 372 Builder.defineMacro("__AMDGPU__"); 373 374 if (isAMDGCN(getTriple())) 375 Builder.defineMacro("__AMDGCN__"); 376 else 377 Builder.defineMacro("__R600__"); 378 379 if (GPUKind != llvm::AMDGPU::GK_NONE) { 380 StringRef CanonName = isAMDGCN(getTriple()) ? 381 getArchNameAMDGCN(GPUKind) : getArchNameR600(GPUKind); 382 Builder.defineMacro(Twine("__") + Twine(CanonName) + Twine("__")); 383 if (isAMDGCN(getTriple())) { 384 Builder.defineMacro("__amdgcn_processor__", 385 Twine("\"") + Twine(CanonName) + Twine("\"")); 386 Builder.defineMacro("__amdgcn_target_id__", 387 Twine("\"") + Twine(getTargetID().getValue()) + 388 Twine("\"")); 389 for (auto F : getAllPossibleTargetIDFeatures(getTriple(), CanonName)) { 390 auto Loc = OffloadArchFeatures.find(F); 391 if (Loc != OffloadArchFeatures.end()) { 392 std::string NewF = F.str(); 393 std::replace(NewF.begin(), NewF.end(), '-', '_'); 394 Builder.defineMacro(Twine("__amdgcn_feature_") + Twine(NewF) + 395 Twine("__"), 396 Loc->second ? "1" : "0"); 397 } 398 } 399 } 400 } 401 402 // TODO: __HAS_FMAF__, __HAS_LDEXPF__, __HAS_FP64__ are deprecated and will be 403 // removed in the near future. 404 if (hasFMAF()) 405 Builder.defineMacro("__HAS_FMAF__"); 406 if (hasFastFMAF()) 407 Builder.defineMacro("FP_FAST_FMAF"); 408 if (hasLDEXPF()) 409 Builder.defineMacro("__HAS_LDEXPF__"); 410 if (hasFP64()) 411 Builder.defineMacro("__HAS_FP64__"); 412 if (hasFastFMA()) 413 Builder.defineMacro("FP_FAST_FMA"); 414 415 Builder.defineMacro("__AMDGCN_WAVEFRONT_SIZE", Twine(WavefrontSize)); 416 } 417 418 void AMDGPUTargetInfo::setAuxTarget(const TargetInfo *Aux) { 419 assert(HalfFormat == Aux->HalfFormat); 420 assert(FloatFormat == Aux->FloatFormat); 421 assert(DoubleFormat == Aux->DoubleFormat); 422 423 // On x86_64 long double is 80-bit extended precision format, which is 424 // not supported by AMDGPU. 128-bit floating point format is also not 425 // supported by AMDGPU. Therefore keep its own format for these two types. 426 auto SaveLongDoubleFormat = LongDoubleFormat; 427 auto SaveFloat128Format = Float128Format; 428 copyAuxTarget(Aux); 429 LongDoubleFormat = SaveLongDoubleFormat; 430 Float128Format = SaveFloat128Format; 431 // For certain builtin types support on the host target, claim they are 432 // support to pass the compilation of the host code during the device-side 433 // compilation. 434 // FIXME: As the side effect, we also accept `__float128` uses in the device 435 // code. To rejct these builtin types supported in the host target but not in 436 // the device target, one approach would support `device_builtin` attribute 437 // so that we could tell the device builtin types from the host ones. The 438 // also solves the different representations of the same builtin type, such 439 // as `size_t` in the MSVC environment. 440 if (Aux->hasFloat128Type()) { 441 HasFloat128 = true; 442 Float128Format = DoubleFormat; 443 } 444 } 445