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//==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- C++ -*-=//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
/// \file
/// This file a TargetTransformInfo::Concept conforming object specific
/// to the WebAssembly target machine.
/// It uses the target's detailed information to provide more precise answers to
/// certain TTI queries, while letting the target independent and default TTI
/// implementations handle the rest.
#include "WebAssemblyTargetMachine.h"
#include "llvm/CodeGen/BasicTTIImpl.h"
#include <algorithm>
namespace llvm {
class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT;
typedef TargetTransformInfo TTI;
friend BaseT;
const WebAssemblySubtarget *ST;
const WebAssemblyTargetLowering *TLI;
const WebAssemblySubtarget *getST() const { return ST; }
const WebAssemblyTargetLowering *getTLI() const { return TLI; }
WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F)
: BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
TLI(ST->getTargetLowering()) {}
/// \name Scalar TTI Implementations
/// @{
// TODO: Implement more Scalar TTI for WebAssembly
TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const;
void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
TTI::UnrollingPreferences &UP,
OptimizationRemarkEmitter *ORE) const;
/// @}
/// \name Vector TTI Implementations
/// @{
unsigned getNumberOfRegisters(unsigned ClassID) const;
TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const;
InstructionCost getArithmeticInstrCost(
unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind,
TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
const Instruction *CxtI = nullptr);
InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
unsigned Index);
/// @}
bool areInlineCompatible(const Function *Caller,
const Function *Callee) const;
} // end namespace llvm