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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;
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::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None},
TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None},
ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
const Instruction *CxtI = nullptr);
using BaseT::getVectorInstrCost;
InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
TTI::TargetCostKind CostKind,
unsigned Index, Value *Op0, Value *Op1);
/// @}
bool areInlineCompatible(const Function *Caller,
const Function *Callee) const;
bool supportsTailCalls() const;
};
} // end namespace llvm
#endif
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