LLVM  3.7.0
WebAssemblyTargetTransformInfo.h
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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 
25 #include <algorithm>
26 
27 namespace llvm {
28 
29 class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
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:
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.
47  : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
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);
58 
59  /// @}
60 
61  /// \name Vector TTI Implementations
62  /// @{
63 
64  // TODO: Implement Vector TTI for WebAssembly
65 
66  /// @}
67 };
68 
69 } // end namespace llvm
70 
71 #endif
WebAssemblyTTIImpl(const WebAssemblyTTIImpl &Arg)
WebAssemblyTTIImpl(WebAssemblyTTIImpl &&Arg)
F(f)
Base class which can be used to help build a TTI implementation.
Definition: BasicTTIImpl.h:40
This file declares the WebAssembly-specific subclass of TargetMachine.
PopcntSupportKind
Flags indicating the kind of support for population count.
TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth)
WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, Function &F)
This file provides a helper that implements much of the TTI interface in terms of the target-independ...
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
const DataLayout & getDataLayout() const
aarch64 promote const
static const Function * getParent(const Value *V)