1 //===-- NVPTXMCExpr.h - NVPTX specific MC expression classes ----*- 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 // Modeled after ARMMCExpr 11 12 #ifndef NVPTXMCEXPR_H 13 #define NVPTXMCEXPR_H 14 15 #include "llvm/ADT/APFloat.h" 16 #include "llvm/MC/MCExpr.h" 17 18 namespace llvm { 19 20 class NVPTXFloatMCExpr : public MCTargetExpr { 21 public: 22 enum VariantKind { 23 VK_NVPTX_None, 24 VK_NVPTX_SINGLE_PREC_FLOAT, // FP constant in single-precision 25 VK_NVPTX_DOUBLE_PREC_FLOAT // FP constant in double-precision 26 }; 27 28 private: 29 const VariantKind Kind; 30 const APFloat Flt; 31 32 explicit NVPTXFloatMCExpr(VariantKind _Kind, APFloat _Flt) 33 : Kind(_Kind), Flt(_Flt) {} 34 35 public: 36 /// @name Construction 37 /// @{ 38 39 static const NVPTXFloatMCExpr *Create(VariantKind Kind, APFloat Flt, 40 MCContext &Ctx); 41 42 static const NVPTXFloatMCExpr *CreateConstantFPSingle(APFloat Flt, 43 MCContext &Ctx) { 44 return Create(VK_NVPTX_SINGLE_PREC_FLOAT, Flt, Ctx); 45 } 46 47 static const NVPTXFloatMCExpr *CreateConstantFPDouble(APFloat Flt, 48 MCContext &Ctx) { 49 return Create(VK_NVPTX_DOUBLE_PREC_FLOAT, Flt, Ctx); 50 } 51 52 /// @} 53 /// @name Accessors 54 /// @{ 55 56 /// getOpcode - Get the kind of this expression. 57 VariantKind getKind() const { return Kind; } 58 59 /// getSubExpr - Get the child of this expression. 60 APFloat getAPFloat() const { return Flt; } 61 62 /// @} 63 64 void PrintImpl(raw_ostream &OS) const; 65 bool EvaluateAsRelocatableImpl(MCValue &Res, 66 const MCAsmLayout *Layout) const { 67 return false; 68 } 69 void AddValueSymbols(MCAssembler *) const {}; 70 const MCSection *FindAssociatedSection() const { 71 return NULL; 72 } 73 74 // There are no TLS NVPTXMCExprs at the moment. 75 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {} 76 77 static bool classof(const MCExpr *E) { 78 return E->getKind() == MCExpr::Target; 79 } 80 }; 81 } // end namespace llvm 82 83 #endif 84
