1 //==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- 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 /// \file 11 /// \brief This file a TargetTransformInfo::Concept conforming object specific 12 /// to the WebAssembly target machine. 13 /// 14 /// It uses the target's detailed information to provide more precise answers to 15 /// certain TTI queries, while letting the target independent and default TTI 16 /// implementations handle the rest. 17 /// 18 //===----------------------------------------------------------------------===// 19 20 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H 21 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H 22 23 #include "WebAssemblyTargetMachine.h" 24 #include "llvm/CodeGen/BasicTTIImpl.h" 25 #include <algorithm> 26 27 namespace llvm { 28 29 class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> { 30 typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT; 31 typedef TargetTransformInfo TTI; 32 friend BaseT; 33 34 const WebAssemblySubtarget *ST; 35 const WebAssemblyTargetLowering *TLI; 36 37 const WebAssemblySubtarget *getST() const { return ST; } 38 const WebAssemblyTargetLowering *getTLI() const { return TLI; } 39 40 public: 41 WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F) 42 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), 43 TLI(ST->getTargetLowering()) {} 44 45 // Provide value semantics. MSVC requires that we spell all of these out. 46 WebAssemblyTTIImpl(const WebAssemblyTTIImpl &Arg) 47 : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {} 48 WebAssemblyTTIImpl(WebAssemblyTTIImpl &&Arg) 49 : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)), 50 TLI(std::move(Arg.TLI)) {} 51 52 /// \name Scalar TTI Implementations 53 /// @{ 54 55 // TODO: Implement more Scalar TTI for WebAssembly 56 57 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const; 58 59 /// @} 60 61 /// \name Vector TTI Implementations 62 /// @{ 63 64 unsigned getNumberOfRegisters(bool Vector); 65 unsigned getRegisterBitWidth(bool Vector); 66 unsigned getArithmeticInstrCost( 67 unsigned Opcode, Type *Ty, 68 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue, 69 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue, 70 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None, 71 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None); 72 unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index); 73 74 /// @} 75 }; 76 77 } // end namespace llvm 78 79 #endif 80
