WebAssemblyTargetTransformInfo.h
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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 https://llvm.org/LICENSE.txt 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.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
#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; }
public:
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;
/// @}
/// \name Vector TTI Implementations
/// @{
unsigned getNumberOfRegisters(unsigned ClassID) const;
unsigned getRegisterBitWidth(bool Vector) const;
unsigned getArithmeticInstrCost(
unsigned Opcode, Type *Ty,
TTI::TargetCostKind CostKind = TTI::TCK_SizeAndLatency,
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);
unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
/// @}
};
} // end namespace llvm
#endif