contrib/llvm/lib/Target/AArch64/AArch64CallLowering.h

   1 //===--- AArch64CallLowering.h - Call lowering ------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 ///
  10 /// \file
  11 /// This file describes how to lower LLVM calls to machine code calls.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
  16 #define LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H
  17
  18 #include "llvm/ADT/ArrayRef.h"
  19 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
  20 #include <cstdint>
  21 #include <functional>
  22
  23 namespace llvm {
  24
  25 class AArch64TargetLowering;
  26
  27 class AArch64CallLowering: public CallLowering {
  28 public:
  29   AArch64CallLowering(const AArch64TargetLowering &TLI);
  30
  31   bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
  32                    unsigned VReg) const override;
  33
  34   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
  35                             ArrayRef<unsigned> VRegs) const override;
  36
  37   bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
  38                  const MachineOperand &Callee, const ArgInfo &OrigRet,
  39                  ArrayRef<ArgInfo> OrigArgs) const override;
  40
  41 private:
  42   typedef std::function<void(MachineIRBuilder &, Type *, unsigned,
  43                              CCValAssign &)>
  44       RegHandler;
  45
  46   typedef std::function<void(MachineIRBuilder &, int, CCValAssign &)>
  47       MemHandler;
  48
  49   typedef std::function<void(unsigned, uint64_t)> SplitArgTy;
  50
  51   void splitToValueTypes(const ArgInfo &OrigArgInfo,
  52                          SmallVectorImpl<ArgInfo> &SplitArgs,
  53                          const DataLayout &DL, MachineRegisterInfo &MRI,
  54                          const SplitArgTy &SplitArg) const;
  55 };
  56
  57 } // end namespace llvm
  58
  59 #endif // LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H