64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
//===- llvm/lib/Target/ARM/ARMCallLowering.h - Call lowering ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// This file describes how to lower LLVM calls to machine code calls.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H
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#define LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/CodeGen/GlobalISel/CallLowering.h"
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#include "llvm/IR/CallingConv.h"
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#include <cstdint>
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#include <functional>
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namespace llvm {
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class ARMTargetLowering;
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class MachineFunction;
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class MachineInstrBuilder;
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class MachineIRBuilder;
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class Value;
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class ARMCallLowering : public CallLowering {
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public:
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ARMCallLowering(const ARMTargetLowering &TLI);
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bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
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ArrayRef<unsigned> VRegs) const override;
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bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
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ArrayRef<unsigned> VRegs) const override;
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bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
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const MachineOperand &Callee, const ArgInfo &OrigRet,
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ArrayRef<ArgInfo> OrigArgs) const override;
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private:
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bool lowerReturnVal(MachineIRBuilder &MIRBuilder, const Value *Val,
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ArrayRef<unsigned> VRegs,
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MachineInstrBuilder &Ret) const;
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using SplitArgTy = std::function<void(unsigned Reg, uint64_t Offset)>;
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/// Split an argument into one or more arguments that the CC lowering can cope
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/// with (e.g. replace pointers with integers).
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void splitToValueTypes(const ArgInfo &OrigArg,
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SmallVectorImpl<ArgInfo> &SplitArgs,
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MachineFunction &MF,
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const SplitArgTy &PerformArgSplit) const;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_ARM_ARMCALLLOWERING_H
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