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 HasZfh = false; 36 37 public: 38 RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &) 39 : TargetInfo(Triple) { 40 LongDoubleWidth = 128; 41 LongDoubleAlign = 128; 42 LongDoubleFormat = &llvm::APFloat::IEEEquad(); 43 SuitableAlign = 128; 44 WCharType = SignedInt; 45 WIntType = UnsignedInt; 46 } 47 48 bool setCPU(const std::string &Name) override { 49 if (!isValidCPUName(Name)) 50 return false; 51 CPU = Name; 52 return true; 53 } 54 55 StringRef getABI() const override { return ABI; } 56 void getTargetDefines(const LangOptions &Opts, 57 MacroBuilder &Builder) const override; 58 59 ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; } 60 61 BuiltinVaListKind getBuiltinVaListKind() const override { 62 return TargetInfo::VoidPtrBuiltinVaList; 63 } 64 65 const char *getClobbers() const override { return ""; } 66 67 ArrayRef<const char *> getGCCRegNames() const override; 68 69 int getEHDataRegisterNumber(unsigned RegNo) const override { 70 if (RegNo == 0) 71 return 10; 72 else if (RegNo == 1) 73 return 11; 74 else 75 return -1; 76 } 77 78 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override; 79 80 bool validateAsmConstraint(const char *&Name, 81 TargetInfo::ConstraintInfo &Info) const override; 82 83 bool hasFeature(StringRef Feature) const override; 84 85 bool handleTargetFeatures(std::vector<std::string> &Features, 86 DiagnosticsEngine &Diags) override; 87 88 bool hasExtIntType() const override { return true; } 89 }; 90 class LLVM_LIBRARY_VISIBILITY RISCV32TargetInfo : public RISCVTargetInfo { 91 public: 92 RISCV32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 93 : RISCVTargetInfo(Triple, Opts) { 94 IntPtrType = SignedInt; 95 PtrDiffType = SignedInt; 96 SizeType = UnsignedInt; 97 resetDataLayout("e-m:e-p:32:32-i64:64-n32-S128"); 98 } 99 100 bool setABI(const std::string &Name) override { 101 if (Name == "ilp32" || Name == "ilp32f" || Name == "ilp32d") { 102 ABI = Name; 103 return true; 104 } 105 return false; 106 } 107 108 bool isValidCPUName(StringRef Name) const override; 109 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 110 bool isValidTuneCPUName(StringRef Name) const override; 111 void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override; 112 113 void setMaxAtomicWidth() override { 114 MaxAtomicPromoteWidth = 128; 115 116 if (HasA) 117 MaxAtomicInlineWidth = 32; 118 } 119 }; 120 class LLVM_LIBRARY_VISIBILITY RISCV64TargetInfo : public RISCVTargetInfo { 121 public: 122 RISCV64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts) 123 : RISCVTargetInfo(Triple, Opts) { 124 LongWidth = LongAlign = PointerWidth = PointerAlign = 64; 125 IntMaxType = Int64Type = SignedLong; 126 resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n64-S128"); 127 } 128 129 bool setABI(const std::string &Name) override { 130 if (Name == "lp64" || Name == "lp64f" || Name == "lp64d") { 131 ABI = Name; 132 return true; 133 } 134 return false; 135 } 136 137 bool isValidCPUName(StringRef Name) const override; 138 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override; 139 bool isValidTuneCPUName(StringRef Name) const override; 140 void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override; 141 142 void setMaxAtomicWidth() override { 143 MaxAtomicPromoteWidth = 128; 144 145 if (HasA) 146 MaxAtomicInlineWidth = 64; 147 } 148 }; 149 } // namespace targets 150 } // namespace clang 151 152 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H 153