contrib/llvm/lib/Target/X86/X86CallLowering.h

   1 //===-- llvm/lib/Target/X86/X86CallLowering.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_X86_X86CALLLOWERING
  16 #define LLVM_LIB_TARGET_X86_X86CALLLOWERING
  17
  18 #include "llvm/ADT/ArrayRef.h"
  19 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
  20
  21 namespace llvm {
  22
  23 class Function;
  24 class MachineIRBuilder;
  25 class X86TargetLowering;
  26 class Value;
  27
  28 class X86CallLowering : public CallLowering {
  29 public:
  30   X86CallLowering(const X86TargetLowering &TLI);
  31
  32   bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
  33                    unsigned VReg) const override;
  34
  35   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
  36                             ArrayRef<unsigned> VRegs) const override;
  37
  38 private:
  39   /// A function of this type is used to perform value split action.
  40   typedef std::function<void(ArrayRef<unsigned>)> SplitArgTy;
  41
  42   void splitToValueTypes(const ArgInfo &OrigArgInfo,
  43                          SmallVectorImpl<ArgInfo> &SplitArgs,
  44                          const DataLayout &DL, MachineRegisterInfo &MRI,
  45                          SplitArgTy SplitArg) const;
  46 };
  47 } // namespace llvm
  48 #endif