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//===- AArch64CallLowering.h - Call lowering --------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file describes how to lower LLVM calls to machine code calls.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
#define LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/CodeGen/GlobalISel/CallLowering.h"
#include "llvm/IR/CallingConv.h"
#include <cstdint>
#include <functional>
namespace llvm {
class AArch64TargetLowering;
class CCValAssign;
class DataLayout;
class MachineIRBuilder;
class MachineRegisterInfo;
class Type;
class AArch64CallLowering: public CallLowering {
public:
AArch64CallLowering(const AArch64TargetLowering &TLI);
bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
unsigned VReg) const override;
bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
ArrayRef<unsigned> VRegs) const override;
bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
const MachineOperand &Callee, const ArgInfo &OrigRet,
ArrayRef<ArgInfo> OrigArgs) const override;
private:
using RegHandler = std::function<void(MachineIRBuilder &, Type *, unsigned,
CCValAssign &)>;
using MemHandler =
std::function<void(MachineIRBuilder &, int, CCValAssign &)>;
using SplitArgTy = std::function<void(unsigned, uint64_t)>;
void splitToValueTypes(const ArgInfo &OrigArgInfo,
SmallVectorImpl<ArgInfo> &SplitArgs,
const DataLayout &DL, MachineRegisterInfo &MRI,
CallingConv::ID CallConv,
const SplitArgTy &SplitArg) const;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
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