1 //===-- NVPTXTargetTransformInfo.h - NVPTX 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 /// \file 10 /// This file a TargetTransformInfo::Concept conforming object specific to the 11 /// NVPTX target machine. It uses the target's detailed information to 12 /// provide more precise answers to certain TTI queries, while letting the 13 /// target independent and default TTI implementations handle the rest. 14 /// 15 //===----------------------------------------------------------------------===// 16 17 #ifndef LLVM_LIB_TARGET_NVPTX_NVPTXTARGETTRANSFORMINFO_H 18 #define LLVM_LIB_TARGET_NVPTX_NVPTXTARGETTRANSFORMINFO_H 19 20 #include "NVPTX.h" 21 #include "NVPTXTargetMachine.h" 22 #include "llvm/Analysis/TargetTransformInfo.h" 23 #include "llvm/CodeGen/BasicTTIImpl.h" 24 #include "llvm/Target/TargetLowering.h" 25 26 namespace llvm { 27 28 class NVPTXTTIImpl : public BasicTTIImplBase<NVPTXTTIImpl> { 29 typedef BasicTTIImplBase<NVPTXTTIImpl> BaseT; 30 typedef TargetTransformInfo TTI; 31 friend BaseT; 32 33 const NVPTXSubtarget *ST; 34 const NVPTXTargetLowering *TLI; 35 getST()36 const NVPTXSubtarget *getST() const { return ST; }; getTLI()37 const NVPTXTargetLowering *getTLI() const { return TLI; }; 38 39 public: NVPTXTTIImpl(const NVPTXTargetMachine * TM,const Function & F)40 explicit NVPTXTTIImpl(const NVPTXTargetMachine *TM, const Function &F) 41 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl()), 42 TLI(ST->getTargetLowering()) {} 43 44 // Provide value semantics. MSVC requires that we spell all of these out. NVPTXTTIImpl(const NVPTXTTIImpl & Arg)45 NVPTXTTIImpl(const NVPTXTTIImpl &Arg) 46 : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {} NVPTXTTIImpl(NVPTXTTIImpl && Arg)47 NVPTXTTIImpl(NVPTXTTIImpl &&Arg) 48 : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)), 49 TLI(std::move(Arg.TLI)) {} 50 hasBranchDivergence()51 bool hasBranchDivergence() { return true; } 52 53 bool isSourceOfDivergence(const Value *V); 54 55 // Increase the inlining cost threshold by a factor of 5, reflecting that 56 // calls are particularly expensive in NVPTX. getInliningThresholdMultiplier()57 unsigned getInliningThresholdMultiplier() { return 5; } 58 59 int getArithmeticInstrCost( 60 unsigned Opcode, Type *Ty, 61 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue, 62 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue, 63 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None, 64 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None); 65 66 void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP); 67 }; 68 69 } // end namespace llvm 70 71 #endif 72