1 //===--- RISCV.h - Declare RISCV 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 RISCV TargetInfo objects. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 14 #define LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 15 16 #include "clang/Basic/TargetInfo.h" 17 #include "clang/Basic/TargetOptions.h" 18 #include "llvm/ADT/Triple.h" 19 #include "llvm/Support/Compiler.h" 20 21 namespace clang { 22 namespace targets { 23 24 // RISC-V Target 25 class RISCVTargetInfo : public TargetInfo { 26 protected: 27 std::string ABI, CPU; 28 bool HasM = false; 29 bool HasA = false; 30 bool HasF = false; 31 bool HasD = false; 32 bool HasC = false; 33 bool HasB = false; 34 bool HasV = false; 35 bool HasZba = false; 36 bool HasZbb = false; 37 bool HasZbc = false; 38 bool HasZbe = false; 39 bool HasZbf = false; 40 bool HasZbm = false; 41 bool HasZbp = false; 42 bool HasZbproposedc = false; 43 bool HasZbr = false; 44 bool HasZbs = false; 45 bool HasZbt = false; 46 bool HasZfh = false; 47 bool HasZvamo = false; 48 bool HasZvlsseg = false; 49 50 static const Builtin::Info BuiltinInfo[]; 51 52 public: 53 RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &) 54 : TargetInfo(Triple) { 55 LongDoubleWidth = 128; 56 LongDoubleAlign = 128; 57 LongDoubleFormat = &llvm::APFloat::IEEEquad(); 58 SuitableAlign = 128; 59 WCharType = SignedInt; 60 WIntType = UnsignedInt; 61 HasRISCVVTypes = true; 62 MCountName = "_mcount"; 63 HasFloat16 = true; 64 } 65 66 bool setCPU(const std::string &Name) override { 67 if (!isValidCPUName(Name)) 68 return false; 69 CPU = Name; 70 return true; 71 } 72 73 StringRef getABI() const override { return ABI; } 74 void getTargetDefines(const LangOptions &Opts, 75 MacroBuilder &Builder) const override; 76 77 ArrayRef<Builtin::Info> getTargetBuiltins() const override; 78 79 BuiltinVaListKind getBuiltinVaListKind() const override { 80 return TargetInfo::VoidPtrBuiltinVaList; 81 } 82 83 const char *getClobbers() const override { return ""; } 84 85 StringRef getConstraintRegister(StringRef Constraint, 86 StringRef Expression) const override { 87 return Expression; 88 } 89 90 ArrayRef<const char *> getGCCRegNames() const override; 91 92 int getEHDataRegisterNumber(unsigned RegNo) const override { 93 if (RegNo == 0) 94 return 10; 95 else if (RegNo == 1) 96 return 11; 97 else 98 return -1; 99 } 100 101 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override; 102 103 bool validateAsmConstraint(const char *&Name, 104 TargetInfo::ConstraintInfo &Info) const override; 105 106 std::string convertConstraint(const char *&Constraint) const override; 107 108 bool 109 initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, 110 StringRef CPU, 111 const std::vector<std::string> &FeaturesVec) const override; 112 113 bool hasFeature(StringRef Feature) const override; 114 115 bool handleTargetFeatures(std::vector<std::string> &Features, 116 DiagnosticsEngine &Diags) override; 117 118 bool hasExtIntType() const override { return true; } 119 }; 120 class LLVM_LIBRARY_VISIBILITY RISCV32TargetInfo : public RISCVTargetInfo { 121 public: 122 RISCV32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 123 : RISCVTargetInfo(Triple, Opts) { 124 IntPtrType = SignedInt; 125 PtrDiffType = SignedInt; 126 SizeType = UnsignedInt; 127 resetDataLayout("e-m:e-p:32:32-i64:64-n32-S128"); 128 } 129 130 bool setABI(const std::string &Name) override { 131 if (Name == "ilp32" || Name == "ilp32f" || Name == "ilp32d") { 132 ABI = Name; 133 return true; 134 } 135 return false; 136 } 137 138 bool isValidCPUName(StringRef Name) const override; 139 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 140 bool isValidTuneCPUName(StringRef Name) const override; 141 void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override; 142 143 void setMaxAtomicWidth() override { 144 MaxAtomicPromoteWidth = 128; 145 146 if (HasA) 147 MaxAtomicInlineWidth = 32; 148 } 149 }; 150 class LLVM_LIBRARY_VISIBILITY RISCV64TargetInfo : public RISCVTargetInfo { 151 public: 152 RISCV64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 153 : RISCVTargetInfo(Triple, Opts) { 154 LongWidth = LongAlign = PointerWidth = PointerAlign = 64; 155 IntMaxType = Int64Type = SignedLong; 156 resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n64-S128"); 157 } 158 159 bool setABI(const std::string &Name) override { 160 if (Name == "lp64" || Name == "lp64f" || Name == "lp64d") { 161 ABI = Name; 162 return true; 163 } 164 return false; 165 } 166 167 bool isValidCPUName(StringRef Name) const override; 168 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 169 bool isValidTuneCPUName(StringRef Name) const override; 170 void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override; 171 172 void setMaxAtomicWidth() override { 173 MaxAtomicPromoteWidth = 128; 174 175 if (HasA) 176 MaxAtomicInlineWidth = 64; 177 } 178 }; 179 } // namespace targets 180 } // namespace clang 181 182 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 183