llvm/lib/Target/ARM/ARMCallLowering.h

   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