1 //===--- SystemZ.h - Declare SystemZ target feature support -----*- C++ -*-===// 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 declares SystemZ TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H 14 #define LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H 15 16 #include "clang/Basic/TargetInfo.h" 17 #include "clang/Basic/TargetOptions.h" 18 #include "llvm/Support/Compiler.h" 19 #include "llvm/TargetParser/Triple.h" 20 21 namespace clang { 22 namespace targets { 23 24 class LLVM_LIBRARY_VISIBILITY SystemZTargetInfo : public TargetInfo { 25 26 static const char *const GCCRegNames[]; 27 std::string CPU; 28 int ISARevision; 29 bool HasTransactionalExecution; 30 bool HasVector; 31 bool SoftFloat; 32 bool UnalignedSymbols; 33 34 public: 35 SystemZTargetInfo(const llvm::Triple &Triple, const TargetOptions &) 36 : TargetInfo(Triple), CPU("z10"), ISARevision(8), 37 HasTransactionalExecution(false), HasVector(false), SoftFloat(false), 38 UnalignedSymbols(false) { 39 IntMaxType = SignedLong; 40 Int64Type = SignedLong; 41 IntWidth = IntAlign = 32; 42 LongWidth = LongLongWidth = LongAlign = LongLongAlign = 64; 43 Int128Align = 64; 44 PointerWidth = PointerAlign = 64; 45 LongDoubleWidth = 128; 46 LongDoubleAlign = 64; 47 LongDoubleFormat = &llvm::APFloat::IEEEquad(); 48 DefaultAlignForAttributeAligned = 64; 49 MinGlobalAlign = 16; 50 HasUnalignedAccess = true; 51 if (Triple.isOSzOS()) { 52 TLSSupported = false; 53 // All vector types are default aligned on an 8-byte boundary, even if the 54 // vector facility is not available. That is different from Linux. 55 MaxVectorAlign = 64; 56 // Compared to Linux/ELF, the data layout differs only in some details: 57 // - name mangling is GOFF. 58 // - 32 bit pointers, either as default or special address space 59 resetDataLayout("E-m:l-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-" 60 "a:8:16-n32:64"); 61 } else { 62 TLSSupported = true; 63 resetDataLayout("E-m:e-i1:8:16-i8:8:16-i64:64-f128:64" 64 "-v128:64-a:8:16-n32:64"); 65 } 66 MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 128; 67 HasStrictFP = true; 68 } 69 70 unsigned getMinGlobalAlign(uint64_t Size, bool HasNonWeakDef) const override; 71 72 void getTargetDefines(const LangOptions &Opts, 73 MacroBuilder &Builder) const override; 74 75 ArrayRef<Builtin::Info> getTargetBuiltins() const override; 76 77 ArrayRef<const char *> getGCCRegNames() const override; 78 79 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override { 80 // No aliases. 81 return std::nullopt; 82 } 83 84 ArrayRef<TargetInfo::AddlRegName> getGCCAddlRegNames() const override; 85 86 bool isSPRegName(StringRef RegName) const override { 87 return RegName == "r15"; 88 } 89 90 bool validateAsmConstraint(const char *&Name, 91 TargetInfo::ConstraintInfo &info) const override; 92 93 std::string convertConstraint(const char *&Constraint) const override { 94 switch (Constraint[0]) { 95 case 'p': // Keep 'p' constraint. 96 return std::string("p"); 97 case 'Z': 98 switch (Constraint[1]) { 99 case 'Q': // Address with base and unsigned 12-bit displacement 100 case 'R': // Likewise, plus an index 101 case 'S': // Address with base and signed 20-bit displacement 102 case 'T': // Likewise, plus an index 103 // "^" hints llvm that this is a 2 letter constraint. 104 // "Constraint++" is used to promote the string iterator 105 // to the next constraint. 106 return std::string("^") + std::string(Constraint++, 2); 107 default: 108 break; 109 } 110 break; 111 default: 112 break; 113 } 114 return TargetInfo::convertConstraint(Constraint); 115 } 116 117 std::string_view getClobbers() const override { 118 // FIXME: Is this really right? 119 return ""; 120 } 121 122 BuiltinVaListKind getBuiltinVaListKind() const override { 123 return TargetInfo::SystemZBuiltinVaList; 124 } 125 126 int getISARevision(StringRef Name) const; 127 128 bool isValidCPUName(StringRef Name) const override { 129 return getISARevision(Name) != -1; 130 } 131 132 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 133 134 bool isValidTuneCPUName(StringRef Name) const override { 135 return isValidCPUName(Name); 136 } 137 138 void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override { 139 fillValidCPUList(Values); 140 } 141 142 bool setCPU(const std::string &Name) override { 143 CPU = Name; 144 ISARevision = getISARevision(CPU); 145 return ISARevision != -1; 146 } 147 148 bool 149 initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, 150 StringRef CPU, 151 const std::vector<std::string> &FeaturesVec) const override { 152 int ISARevision = getISARevision(CPU); 153 if (ISARevision >= 10) 154 Features["transactional-execution"] = true; 155 if (ISARevision >= 11) 156 Features["vector"] = true; 157 if (ISARevision >= 12) 158 Features["vector-enhancements-1"] = true; 159 if (ISARevision >= 13) 160 Features["vector-enhancements-2"] = true; 161 if (ISARevision >= 14) 162 Features["nnp-assist"] = true; 163 return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec); 164 } 165 166 bool handleTargetFeatures(std::vector<std::string> &Features, 167 DiagnosticsEngine &Diags) override { 168 HasTransactionalExecution = false; 169 HasVector = false; 170 SoftFloat = false; 171 UnalignedSymbols = false; 172 for (const auto &Feature : Features) { 173 if (Feature == "+transactional-execution") 174 HasTransactionalExecution = true; 175 else if (Feature == "+vector") 176 HasVector = true; 177 else if (Feature == "+soft-float") 178 SoftFloat = true; 179 else if (Feature == "+unaligned-symbols") 180 UnalignedSymbols = true; 181 } 182 HasVector &= !SoftFloat; 183 184 // If we use the vector ABI, vector types are 64-bit aligned. The 185 // DataLayout string is always set to this alignment as it is not a 186 // requirement that it follows the alignment emitted by the front end. It 187 // is assumed generally that the Datalayout should reflect only the 188 // target triple and not any specific feature. 189 if (HasVector && !getTriple().isOSzOS()) 190 MaxVectorAlign = 64; 191 192 return true; 193 } 194 195 bool hasFeature(StringRef Feature) const override; 196 197 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override { 198 switch (CC) { 199 case CC_C: 200 case CC_Swift: 201 case CC_OpenCLKernel: 202 return CCCR_OK; 203 case CC_SwiftAsync: 204 return CCCR_Error; 205 default: 206 return CCCR_Warning; 207 } 208 } 209 210 StringRef getABI() const override { 211 if (HasVector) 212 return "vector"; 213 return ""; 214 } 215 216 const char *getLongDoubleMangling() const override { return "g"; } 217 218 bool hasBitIntType() const override { return true; } 219 220 int getEHDataRegisterNumber(unsigned RegNo) const override { 221 return RegNo < 4 ? 6 + RegNo : -1; 222 } 223 224 std::pair<unsigned, unsigned> hardwareInterferenceSizes() const override { 225 return std::make_pair(256, 256); 226 } 227 }; 228 } // namespace targets 229 } // namespace clang 230 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H 231