RISCV.h revision 336979 
1//===--- RISCV.h - Declare RISCV target feature support ---------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares RISCV TargetInfo objects.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H
15#define LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H
16
17#include "clang/Basic/TargetInfo.h"
18#include "clang/Basic/TargetOptions.h"
19#include "llvm/ADT/Triple.h"
20#include "llvm/Support/Compiler.h"
21
22namespace clang {
23namespace targets {
24
25// RISC-V Target
26class RISCVTargetInfo : public TargetInfo {
27protected:
28  std::string ABI;
29  bool HasM;
30  bool HasA;
31  bool HasF;
32  bool HasD;
33  bool HasC;
34
35public:
36  RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
37      : TargetInfo(Triple), HasM(false), HasA(false), HasF(false),
38        HasD(false), HasC(false) {
39    TLSSupported = false;
40    LongDoubleWidth = 128;
41    LongDoubleAlign = 128;
42    LongDoubleFormat = &llvm::APFloat::IEEEquad();
43    SuitableAlign = 128;
44    WCharType = SignedInt;
45    WIntType = UnsignedInt;
46  }
47
48  StringRef getABI() const override { return ABI; }
49  void getTargetDefines(const LangOptions &Opts,
50                        MacroBuilder &Builder) const override;
51
52  ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; }
53
54  BuiltinVaListKind getBuiltinVaListKind() const override {
55    return TargetInfo::VoidPtrBuiltinVaList;
56  }
57
58  const char *getClobbers() const override { return ""; }
59
60  ArrayRef<const char *> getGCCRegNames() const override;
61
62  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
63
64  bool validateAsmConstraint(const char *&Name,
65                             TargetInfo::ConstraintInfo &Info) const override {
66    return false;
67  }
68
69  bool hasFeature(StringRef Feature) const override;
70
71  bool handleTargetFeatures(std::vector<std::string> &Features,
72                            DiagnosticsEngine &Diags) override;
73};
74class LLVM_LIBRARY_VISIBILITY RISCV32TargetInfo : public RISCVTargetInfo {
75public:
76  RISCV32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
77      : RISCVTargetInfo(Triple, Opts) {
78    IntPtrType = SignedInt;
79    PtrDiffType = SignedInt;
80    SizeType = UnsignedInt;
81    resetDataLayout("e-m:e-p:32:32-i64:64-n32-S128");
82  }
83
84  bool setABI(const std::string &Name) override {
85    // TODO: support ilp32f and ilp32d ABIs.
86    if (Name == "ilp32") {
87      ABI = Name;
88      return true;
89    }
90    return false;
91  }
92};
93class LLVM_LIBRARY_VISIBILITY RISCV64TargetInfo : public RISCVTargetInfo {
94public:
95  RISCV64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
96      : RISCVTargetInfo(Triple, Opts) {
97    LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
98    IntMaxType = Int64Type = SignedLong;
99    resetDataLayout("e-m:e-p:64:64-i64:64-i128:128-n64-S128");
100  }
101
102  bool setABI(const std::string &Name) override {
103    // TODO: support lp64f and lp64d ABIs.
104    if (Name == "lp64") {
105      ABI = Name;
106      return true;
107    }
108    return false;
109  }
110};
111} // namespace targets
112} // namespace clang
113
114#endif // LLVM_CLANG_LIB_BASIC_TARGETS_RISCV_H
115