//===--- AMDGPU.cpp - Implement AMDGPU target feature support -------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file implements AMDGPU TargetInfo objects. // //===----------------------------------------------------------------------===// #include "AMDGPU.h" #include "clang/Basic/Builtins.h" #include "clang/Basic/CodeGenOptions.h" #include "clang/Basic/LangOptions.h" #include "clang/Basic/MacroBuilder.h" #include "clang/Basic/TargetBuiltins.h" #include "llvm/ADT/StringSwitch.h" #include "llvm/Frontend/OpenMP/OMPGridValues.h" #include "llvm/IR/DataLayout.h" using namespace clang; using namespace clang::targets; namespace clang { namespace targets { // If you edit the description strings, make sure you update // getPointerWidthV(). static const char *const DataLayoutStringR600 = "e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1"; static const char *const DataLayoutStringAMDGCN = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32" "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128" "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1" "-ni:7"; const LangASMap AMDGPUTargetInfo::AMDGPUDefIsGenMap = { Generic, // Default Global, // opencl_global Local, // opencl_local Constant, // opencl_constant Private, // opencl_private Generic, // opencl_generic Global, // opencl_global_device Global, // opencl_global_host Global, // cuda_device Constant, // cuda_constant Local, // cuda_shared Generic, // ptr32_sptr Generic, // ptr32_uptr Generic // ptr64 }; const LangASMap AMDGPUTargetInfo::AMDGPUDefIsPrivMap = { Private, // Default Global, // opencl_global Local, // opencl_local Constant, // opencl_constant Private, // opencl_private Generic, // opencl_generic Global, // opencl_global_device Global, // opencl_global_host Global, // cuda_device Constant, // cuda_constant Local, // cuda_shared Generic, // ptr32_sptr Generic, // ptr32_uptr Generic // ptr64 }; } // namespace targets } // namespace clang const Builtin::Info AMDGPUTargetInfo::BuiltinInfo[] = { #define BUILTIN(ID, TYPE, ATTRS) \ {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr}, #define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \ {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE}, #include "clang/Basic/BuiltinsAMDGPU.def" }; const char *const AMDGPUTargetInfo::GCCRegNames[] = { "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "v32", "v33", "v34", "v35", "v36", "v37", "v38", "v39", "v40", "v41", "v42", "v43", "v44", "v45", "v46", "v47", "v48", "v49", "v50", "v51", "v52", "v53", "v54", "v55", "v56", "v57", "v58", "v59", "v60", "v61", "v62", "v63", "v64", "v65", "v66", "v67", "v68", "v69", "v70", "v71", "v72", "v73", "v74", "v75", "v76", "v77", "v78", "v79", "v80", "v81", "v82", "v83", "v84", "v85", "v86", "v87", "v88", "v89", "v90", "v91", "v92", "v93", "v94", "v95", "v96", "v97", "v98", "v99", "v100", "v101", "v102", "v103", "v104", "v105", "v106", "v107", "v108", "v109", "v110", "v111", "v112", "v113", "v114", "v115", "v116", "v117", "v118", "v119", "v120", "v121", "v122", "v123", "v124", "v125", "v126", "v127", "v128", "v129", "v130", "v131", "v132", "v133", "v134", "v135", "v136", "v137", "v138", "v139", "v140", "v141", "v142", "v143", "v144", "v145", "v146", "v147", "v148", "v149", "v150", "v151", "v152", "v153", "v154", "v155", "v156", "v157", "v158", "v159", "v160", "v161", "v162", "v163", "v164", "v165", "v166", "v167", "v168", "v169", "v170", "v171", "v172", "v173", "v174", "v175", "v176", "v177", "v178", "v179", "v180", "v181", "v182", "v183", "v184", "v185", "v186", "v187", "v188", "v189", "v190", "v191", "v192", "v193", "v194", "v195", "v196", "v197", "v198", "v199", "v200", "v201", "v202", "v203", "v204", "v205", "v206", "v207", "v208", "v209", "v210", "v211", "v212", "v213", "v214", "v215", "v216", "v217", "v218", "v219", "v220", "v221", "v222", "v223", "v224", "v225", "v226", "v227", "v228", "v229", "v230", "v231", "v232", "v233", "v234", "v235", "v236", "v237", "v238", "v239", "v240", "v241", "v242", "v243", "v244", "v245", "v246", "v247", "v248", "v249", "v250", "v251", "v252", "v253", "v254", "v255", "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15", "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23", "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", "s32", "s33", "s34", "s35", "s36", "s37", "s38", "s39", "s40", "s41", "s42", "s43", "s44", "s45", "s46", "s47", "s48", "s49", "s50", "s51", "s52", "s53", "s54", "s55", "s56", "s57", "s58", "s59", "s60", "s61", "s62", "s63", "s64", "s65", "s66", "s67", "s68", "s69", "s70", "s71", "s72", "s73", "s74", "s75", "s76", "s77", "s78", "s79", "s80", "s81", "s82", "s83", "s84", "s85", "s86", "s87", "s88", "s89", "s90", "s91", "s92", "s93", "s94", "s95", "s96", "s97", "s98", "s99", "s100", "s101", "s102", "s103", "s104", "s105", "s106", "s107", "s108", "s109", "s110", "s111", "s112", "s113", "s114", "s115", "s116", "s117", "s118", "s119", "s120", "s121", "s122", "s123", "s124", "s125", "s126", "s127", "exec", "vcc", "scc", "m0", "flat_scratch", "exec_lo", "exec_hi", "vcc_lo", "vcc_hi", "flat_scratch_lo", "flat_scratch_hi", "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", "a9", "a10", "a11", "a12", "a13", "a14", "a15", "a16", "a17", "a18", "a19", "a20", "a21", "a22", "a23", "a24", "a25", "a26", "a27", "a28", "a29", "a30", "a31", "a32", "a33", "a34", "a35", "a36", "a37", "a38", "a39", "a40", "a41", "a42", "a43", "a44", "a45", "a46", "a47", "a48", "a49", "a50", "a51", "a52", "a53", "a54", "a55", "a56", "a57", "a58", "a59", "a60", "a61", "a62", "a63", "a64", "a65", "a66", "a67", "a68", "a69", "a70", "a71", "a72", "a73", "a74", "a75", "a76", "a77", "a78", "a79", "a80", "a81", "a82", "a83", "a84", "a85", "a86", "a87", "a88", "a89", "a90", "a91", "a92", "a93", "a94", "a95", "a96", "a97", "a98", "a99", "a100", "a101", "a102", "a103", "a104", "a105", "a106", "a107", "a108", "a109", "a110", "a111", "a112", "a113", "a114", "a115", "a116", "a117", "a118", "a119", "a120", "a121", "a122", "a123", "a124", "a125", "a126", "a127", "a128", "a129", "a130", "a131", "a132", "a133", "a134", "a135", "a136", "a137", "a138", "a139", "a140", "a141", "a142", "a143", "a144", "a145", "a146", "a147", "a148", "a149", "a150", "a151", "a152", "a153", "a154", "a155", "a156", "a157", "a158", "a159", "a160", "a161", "a162", "a163", "a164", "a165", "a166", "a167", "a168", "a169", "a170", "a171", "a172", "a173", "a174", "a175", "a176", "a177", "a178", "a179", "a180", "a181", "a182", "a183", "a184", "a185", "a186", "a187", "a188", "a189", "a190", "a191", "a192", "a193", "a194", "a195", "a196", "a197", "a198", "a199", "a200", "a201", "a202", "a203", "a204", "a205", "a206", "a207", "a208", "a209", "a210", "a211", "a212", "a213", "a214", "a215", "a216", "a217", "a218", "a219", "a220", "a221", "a222", "a223", "a224", "a225", "a226", "a227", "a228", "a229", "a230", "a231", "a232", "a233", "a234", "a235", "a236", "a237", "a238", "a239", "a240", "a241", "a242", "a243", "a244", "a245", "a246", "a247", "a248", "a249", "a250", "a251", "a252", "a253", "a254", "a255" }; ArrayRef AMDGPUTargetInfo::getGCCRegNames() const { return llvm::makeArrayRef(GCCRegNames); } bool AMDGPUTargetInfo::initFeatureMap( llvm::StringMap &Features, DiagnosticsEngine &Diags, StringRef CPU, const std::vector &FeatureVec) const { using namespace llvm::AMDGPU; // XXX - What does the member GPU mean if device name string passed here? if (isAMDGCN(getTriple())) { switch (llvm::AMDGPU::parseArchAMDGCN(CPU)) { case GK_GFX1033: case GK_GFX1032: case GK_GFX1031: case GK_GFX1030: Features["ci-insts"] = true; Features["dot1-insts"] = true; Features["dot2-insts"] = true; Features["dot5-insts"] = true; Features["dot6-insts"] = true; Features["dl-insts"] = true; Features["flat-address-space"] = true; Features["16-bit-insts"] = true; Features["dpp"] = true; Features["gfx8-insts"] = true; Features["gfx9-insts"] = true; Features["gfx10-insts"] = true; Features["gfx10-3-insts"] = true; Features["s-memrealtime"] = true; break; case GK_GFX1012: case GK_GFX1011: Features["dot1-insts"] = true; Features["dot2-insts"] = true; Features["dot5-insts"] = true; Features["dot6-insts"] = true; LLVM_FALLTHROUGH; case GK_GFX1010: Features["dl-insts"] = true; Features["ci-insts"] = true; Features["flat-address-space"] = true; Features["16-bit-insts"] = true; Features["dpp"] = true; Features["gfx8-insts"] = true; Features["gfx9-insts"] = true; Features["gfx10-insts"] = true; Features["s-memrealtime"] = true; break; case GK_GFX908: Features["dot3-insts"] = true; Features["dot4-insts"] = true; Features["dot5-insts"] = true; Features["dot6-insts"] = true; Features["mai-insts"] = true; LLVM_FALLTHROUGH; case GK_GFX906: Features["dl-insts"] = true; Features["dot1-insts"] = true; Features["dot2-insts"] = true; LLVM_FALLTHROUGH; case GK_GFX90C: case GK_GFX909: case GK_GFX904: case GK_GFX902: case GK_GFX900: Features["gfx9-insts"] = true; LLVM_FALLTHROUGH; case GK_GFX810: case GK_GFX805: case GK_GFX803: case GK_GFX802: case GK_GFX801: Features["gfx8-insts"] = true; Features["16-bit-insts"] = true; Features["dpp"] = true; Features["s-memrealtime"] = true; LLVM_FALLTHROUGH; case GK_GFX705: case GK_GFX704: case GK_GFX703: case GK_GFX702: case GK_GFX701: case GK_GFX700: Features["ci-insts"] = true; Features["flat-address-space"] = true; LLVM_FALLTHROUGH; case GK_GFX602: case GK_GFX601: case GK_GFX600: break; case GK_NONE: break; default: llvm_unreachable("Unhandled GPU!"); } } else { if (CPU.empty()) CPU = "r600"; switch (llvm::AMDGPU::parseArchR600(CPU)) { case GK_CAYMAN: case GK_CYPRESS: case GK_RV770: case GK_RV670: // TODO: Add fp64 when implemented. break; case GK_TURKS: case GK_CAICOS: case GK_BARTS: case GK_SUMO: case GK_REDWOOD: case GK_JUNIPER: case GK_CEDAR: case GK_RV730: case GK_RV710: case GK_RS880: case GK_R630: case GK_R600: break; default: llvm_unreachable("Unhandled GPU!"); } } return TargetInfo::initFeatureMap(Features, Diags, CPU, FeatureVec); } void AMDGPUTargetInfo::fillValidCPUList( SmallVectorImpl &Values) const { if (isAMDGCN(getTriple())) llvm::AMDGPU::fillValidArchListAMDGCN(Values); else llvm::AMDGPU::fillValidArchListR600(Values); } void AMDGPUTargetInfo::setAddressSpaceMap(bool DefaultIsPrivate) { AddrSpaceMap = DefaultIsPrivate ? &AMDGPUDefIsPrivMap : &AMDGPUDefIsGenMap; } AMDGPUTargetInfo::AMDGPUTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) : TargetInfo(Triple), GPUKind(isAMDGCN(Triple) ? llvm::AMDGPU::parseArchAMDGCN(Opts.CPU) : llvm::AMDGPU::parseArchR600(Opts.CPU)), GPUFeatures(isAMDGCN(Triple) ? llvm::AMDGPU::getArchAttrAMDGCN(GPUKind) : llvm::AMDGPU::getArchAttrR600(GPUKind)) { resetDataLayout(isAMDGCN(getTriple()) ? DataLayoutStringAMDGCN : DataLayoutStringR600); assert(DataLayout->getAllocaAddrSpace() == Private); GridValues = llvm::omp::AMDGPUGpuGridValues; setAddressSpaceMap(Triple.getOS() == llvm::Triple::Mesa3D || !isAMDGCN(Triple)); UseAddrSpaceMapMangling = true; HasLegalHalfType = true; HasFloat16 = true; WavefrontSize = GPUFeatures & llvm::AMDGPU::FEATURE_WAVE32 ? 32 : 64; AllowAMDGPUUnsafeFPAtomics = Opts.AllowAMDGPUUnsafeFPAtomics; // Set pointer width and alignment for target address space 0. PointerWidth = PointerAlign = DataLayout->getPointerSizeInBits(); if (getMaxPointerWidth() == 64) { LongWidth = LongAlign = 64; SizeType = UnsignedLong; PtrDiffType = SignedLong; IntPtrType = SignedLong; } MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; } void AMDGPUTargetInfo::adjust(LangOptions &Opts) { TargetInfo::adjust(Opts); // ToDo: There are still a few places using default address space as private // address space in OpenCL, which needs to be cleaned up, then Opts.OpenCL // can be removed from the following line. setAddressSpaceMap(/*DefaultIsPrivate=*/Opts.OpenCL || !isAMDGCN(getTriple())); } ArrayRef AMDGPUTargetInfo::getTargetBuiltins() const { return llvm::makeArrayRef(BuiltinInfo, clang::AMDGPU::LastTSBuiltin - Builtin::FirstTSBuiltin); } void AMDGPUTargetInfo::getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const { Builder.defineMacro("__AMD__"); Builder.defineMacro("__AMDGPU__"); if (isAMDGCN(getTriple())) Builder.defineMacro("__AMDGCN__"); else Builder.defineMacro("__R600__"); if (GPUKind != llvm::AMDGPU::GK_NONE) { StringRef CanonName = isAMDGCN(getTriple()) ? getArchNameAMDGCN(GPUKind) : getArchNameR600(GPUKind); Builder.defineMacro(Twine("__") + Twine(CanonName) + Twine("__")); if (isAMDGCN(getTriple())) { Builder.defineMacro("__amdgcn_processor__", Twine("\"") + Twine(CanonName) + Twine("\"")); Builder.defineMacro("__amdgcn_target_id__", Twine("\"") + Twine(getTargetID().getValue()) + Twine("\"")); for (auto F : getAllPossibleTargetIDFeatures(getTriple(), CanonName)) { auto Loc = OffloadArchFeatures.find(F); if (Loc != OffloadArchFeatures.end()) { std::string NewF = F.str(); std::replace(NewF.begin(), NewF.end(), '-', '_'); Builder.defineMacro(Twine("__amdgcn_feature_") + Twine(NewF) + Twine("__"), Loc->second ? "1" : "0"); } } } } // TODO: __HAS_FMAF__, __HAS_LDEXPF__, __HAS_FP64__ are deprecated and will be // removed in the near future. if (hasFMAF()) Builder.defineMacro("__HAS_FMAF__"); if (hasFastFMAF()) Builder.defineMacro("FP_FAST_FMAF"); if (hasLDEXPF()) Builder.defineMacro("__HAS_LDEXPF__"); if (hasFP64()) Builder.defineMacro("__HAS_FP64__"); if (hasFastFMA()) Builder.defineMacro("FP_FAST_FMA"); Builder.defineMacro("__AMDGCN_WAVEFRONT_SIZE", Twine(WavefrontSize)); } void AMDGPUTargetInfo::setAuxTarget(const TargetInfo *Aux) { assert(HalfFormat == Aux->HalfFormat); assert(FloatFormat == Aux->FloatFormat); assert(DoubleFormat == Aux->DoubleFormat); // On x86_64 long double is 80-bit extended precision format, which is // not supported by AMDGPU. 128-bit floating point format is also not // supported by AMDGPU. Therefore keep its own format for these two types. auto SaveLongDoubleFormat = LongDoubleFormat; auto SaveFloat128Format = Float128Format; copyAuxTarget(Aux); LongDoubleFormat = SaveLongDoubleFormat; Float128Format = SaveFloat128Format; // For certain builtin types support on the host target, claim they are // support to pass the compilation of the host code during the device-side // compilation. // FIXME: As the side effect, we also accept `__float128` uses in the device // code. To rejct these builtin types supported in the host target but not in // the device target, one approach would support `device_builtin` attribute // so that we could tell the device builtin types from the host ones. The // also solves the different representations of the same builtin type, such // as `size_t` in the MSVC environment. if (Aux->hasFloat128Type()) { HasFloat128 = true; Float128Format = DoubleFormat; } }