1 //==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- C++ -*-=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief This file a TargetTransformInfo::Concept conforming object specific
12 /// to the WebAssembly target machine.
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.
18 //===----------------------------------------------------------------------===//
20 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
21 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
23 #include "WebAssemblyTargetMachine.h"
24 #include "llvm/CodeGen/BasicTTIImpl.h"
29 class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
30 typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT;
31 typedef TargetTransformInfo TTI;
34 const WebAssemblySubtarget *ST;
35 const WebAssemblyTargetLowering *TLI;
37 const WebAssemblySubtarget *getST() const { return ST; }
38 const WebAssemblyTargetLowering *getTLI() const { return TLI; }
41 WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F)
42 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
43 TLI(ST->getTargetLowering()) {}
45 /// \name Scalar TTI Implementations
48 // TODO: Implement more Scalar TTI for WebAssembly
50 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const;
54 /// \name Vector TTI Implementations
57 unsigned getNumberOfRegisters(bool Vector);
58 unsigned getRegisterBitWidth(bool Vector);
59 unsigned 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 ArrayRef<const Value *> Args = ArrayRef<const Value *>());
66 unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
71 } // end namespace llvm