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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   int getArithmeticInstrCost(
56       unsigned Opcode, Type *Ty,
57       TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
58       TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
59       TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
60       TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None);
61 
62   void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
63 };
64 
65 } // end namespace llvm
66 
67 #endif
68