1 //==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- C++ -*-=//
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
7 //===----------------------------------------------------------------------===//
10 /// This file a TargetTransformInfo::Concept conforming object specific
11 /// to the WebAssembly target machine.
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.
17 //===----------------------------------------------------------------------===//
19 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
20 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
22 #include "WebAssemblyTargetMachine.h"
23 #include "llvm/CodeGen/BasicTTIImpl.h"
28 class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
29 typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT;
30 typedef TargetTransformInfo TTI;
33 const WebAssemblySubtarget *ST;
34 const WebAssemblyTargetLowering *TLI;
36 const WebAssemblySubtarget *getST() const { return ST; }
37 const WebAssemblyTargetLowering *getTLI() const { return TLI; }
40 WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F)
41 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
42 TLI(ST->getTargetLowering()) {}
44 /// \name Scalar TTI Implementations
47 // TODO: Implement more Scalar TTI for WebAssembly
49 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const;
53 /// \name Vector TTI Implementations
56 unsigned getNumberOfRegisters(bool Vector);
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 unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
70 } // end namespace llvm