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

   1 //===-- llvm/lib/Target/AArch64/AArch64CallLowering.h - Call lowering -----===//
   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
  16 #define LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING
  17
  18 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
  19 #include "llvm/CodeGen/ValueTypes.h"
  20
  21 namespace llvm {
  22
  23 class AArch64TargetLowering;
  24
  25 class AArch64CallLowering: public CallLowering {
  26  public:
  27   AArch64CallLowering(const AArch64TargetLowering &TLI);
  28
  29   bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
  30                    unsigned VReg) const override;
  31
  32   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
  33                             ArrayRef<unsigned> VRegs) const override;
  34
  35   bool lowerCall(MachineIRBuilder &MIRBuilder, const MachineOperand &Callee,
  36                  const ArgInfo &OrigRet,
  37                  ArrayRef<ArgInfo> OrigArgs) const override;
  38
  39 private:
  40   typedef std::function<void(MachineIRBuilder &, Type *, unsigned,
  41                              CCValAssign &)>
  42       RegHandler;
  43
  44   typedef std::function<void(MachineIRBuilder &, int, CCValAssign &)>
  45       MemHandler;
  46
  47   typedef std::function<void(ArrayRef<unsigned>, ArrayRef<uint64_t>)>
  48       SplitArgTy;
  49
  50   void splitToValueTypes(const ArgInfo &OrigArgInfo,
  51                          SmallVectorImpl<ArgInfo> &SplitArgs,
  52                          const DataLayout &DL, MachineRegisterInfo &MRI,
  53                          SplitArgTy SplitArg) const;
  54 };
  55 } // End of namespace llvm;
  56 #endif