1//==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- C++ -*-=//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// This file a TargetTransformInfoImplBase conforming object specific
11/// to the WebAssembly target machine.
12///
13/// It uses the target's detailed information to provide more precise answers to
14/// certain TTI queries, while letting the target independent and default TTI
15/// implementations handle the rest.
16///
17//===----------------------------------------------------------------------===//
18
19#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
20#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
21
22#include "WebAssemblyTargetMachine.h"
23#include "llvm/CodeGen/BasicTTIImpl.h"
24#include <algorithm>
25
26namespace llvm {
27
28class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
29 typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT;
30 typedef TargetTransformInfo TTI;
31 friend BaseT;
32
33 const WebAssemblySubtarget *ST;
34 const WebAssemblyTargetLowering *TLI;
35
36 const WebAssemblySubtarget *getST() const { return ST; }
37 const WebAssemblyTargetLowering *getTLI() const { return TLI; }
38
39public:
40 WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F)
41 : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)),
42 TLI(ST->getTargetLowering()) {}
43
44 /// \name Scalar TTI Implementations
45 /// @{
46
47 // TODO: Implement more Scalar TTI for WebAssembly
48
49 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const override;
50
51 void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
52 TTI::UnrollingPreferences &UP,
53 OptimizationRemarkEmitter *ORE) const override;
54
55 /// @}
56
57 /// \name Vector TTI Implementations
58 /// @{
59
60 bool enableInterleavedAccessVectorization() const override { return true; }
61
62 unsigned getNumberOfRegisters(unsigned ClassID) const override;
63 TypeSize
64 getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const override;
65 InstructionCost getArithmeticInstrCost(
66 unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind,
67 TTI::OperandValueInfo Op1Info = {.Kind: TTI::OK_AnyValue, .Properties: TTI::OP_None},
68 TTI::OperandValueInfo Op2Info = {.Kind: TTI::OK_AnyValue, .Properties: TTI::OP_None},
69 ArrayRef<const Value *> Args = {},
70 const Instruction *CxtI = nullptr) const override;
71
72 InstructionCost
73 getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
74 TTI::CastContextHint CCH, TTI::TargetCostKind CostKind,
75 const Instruction *I = nullptr) const override;
76 InstructionCost getMemoryOpCost(
77 unsigned Opcode, Type *Src, Align Alignment, unsigned AddressSpace,
78 TTI::TargetCostKind CostKind,
79 TTI::OperandValueInfo OpInfo = {.Kind: TTI::OK_AnyValue, .Properties: TTI::OP_None},
80 const Instruction *I = nullptr) const override;
81 using BaseT::getVectorInstrCost;
82 InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
83 TTI::TargetCostKind CostKind,
84 unsigned Index, const Value *Op0,
85 const Value *Op1) const override;
86 InstructionCost getPartialReductionCost(
87 unsigned Opcode, Type *InputTypeA, Type *InputTypeB, Type *AccumType,
88 ElementCount VF, TTI::PartialReductionExtendKind OpAExtend,
89 TTI::PartialReductionExtendKind OpBExtend, std::optional<unsigned> BinOp,
90 TTI::TargetCostKind CostKind) const override;
91 TTI::ReductionShuffle
92 getPreferredExpandedReductionShuffle(const IntrinsicInst *II) const override;
93
94 bool supportsTailCalls() const override;
95
96 bool isProfitableToSinkOperands(Instruction *I,
97 SmallVectorImpl<Use *> &Ops) const override;
98
99 /// @}
100};
101
102} // end namespace llvm
103
104#endif
105