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 TargetTransformInfo::Concept 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.getParent()->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;
50
51  /// @}
52
53  /// \name Vector TTI Implementations
54  /// @{
55
56  unsigned getNumberOfRegisters(unsigned ClassID) const;
57  unsigned getRegisterBitWidth(bool Vector) const;
58  unsigned getArithmeticInstrCost(
59      unsigned Opcode, Type *Ty,
60      TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
61      TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
62      TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
63      TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
64      ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
65      const Instruction *CxtI = nullptr);
66  unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
67
68  /// @}
69};
70
71} // end namespace llvm
72
73#endif
74