1 //===- AArch64CallLowering.h - Call lowering --------------------*- 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 describes how to lower LLVM calls to machine code calls.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
15 #define LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
17 #include "llvm/ADT/ArrayRef.h"
18 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
19 #include "llvm/IR/CallingConv.h"
25 class AArch64TargetLowering;
28 class MachineIRBuilder;
29 class MachineRegisterInfo;
32 class AArch64CallLowering: public CallLowering {
34 AArch64CallLowering(const AArch64TargetLowering &TLI);
36 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
37 ArrayRef<Register> VRegs,
38 Register SwiftErrorVReg) const override;
40 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
41 ArrayRef<ArrayRef<Register>> VRegs) const override;
43 bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
44 const MachineOperand &Callee, const ArgInfo &OrigRet,
45 ArrayRef<ArgInfo> OrigArgs,
46 Register SwiftErrorVReg) const override;
48 bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
49 const MachineOperand &Callee, const ArgInfo &OrigRet,
50 ArrayRef<ArgInfo> OrigArgs) const override {
51 return lowerCall(MIRBuilder, CallConv, Callee, OrigRet, OrigArgs, 0);
54 bool supportSwiftError() const override { return true; }
57 using RegHandler = std::function<void(MachineIRBuilder &, Type *, unsigned,
61 std::function<void(MachineIRBuilder &, int, CCValAssign &)>;
63 void splitToValueTypes(const ArgInfo &OrigArgInfo,
64 SmallVectorImpl<ArgInfo> &SplitArgs,
65 const DataLayout &DL, MachineRegisterInfo &MRI,
66 CallingConv::ID CallConv) const;
69 } // end namespace llvm
71 #endif // LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H