1 //===- llvm/lib/Target/ARM/ARMCallLowering.h - Call lowering ----*- C++ -*-===// 2 // 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 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 /// \file 10 /// This file describes how to lower LLVM calls to machine code calls. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H 15 #define LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H 16 17 #include "llvm/ADT/ArrayRef.h" 18 #include "llvm/CodeGen/GlobalISel/CallLowering.h" 19 #include "llvm/IR/CallingConv.h" 20 #include <cstdint> 21 #include <functional> 22 23 namespace llvm { 24 25 class ARMTargetLowering; 26 class MachineFunction; 27 class MachineInstrBuilder; 28 class MachineIRBuilder; 29 class Value; 30 31 class ARMCallLowering : public CallLowering { 32 public: 33 ARMCallLowering(const ARMTargetLowering &TLI); 34 35 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val, 36 ArrayRef<Register> VRegs, 37 FunctionLoweringInfo &FLI) const override; 38 39 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 40 ArrayRef<ArrayRef<Register>> VRegs, 41 FunctionLoweringInfo &FLI) const override; 42 43 bool lowerCall(MachineIRBuilder &MIRBuilder, 44 CallLoweringInfo &Info) const override; 45 46 private: 47 bool lowerReturnVal(MachineIRBuilder &MIRBuilder, const Value *Val, 48 ArrayRef<Register> VRegs, 49 MachineInstrBuilder &Ret) const; 50 }; 51 52 } // end namespace llvm 53 54 #endif // LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H 55