1 //==-- SystemZISelLowering.h - SystemZ DAG Lowering Interface ----*- C++ -*-==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the interfaces that SystemZ uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TARGET_SystemZ_ISELLOWERING_H
16 #define LLVM_TARGET_SystemZ_ISELLOWERING_H
19 #include "llvm/CodeGen/SelectionDAG.h"
20 #include "llvm/Target/TargetLowering.h"
23 namespace SystemZISD {
25 FIRST_NUMBER = ISD::BUILTIN_OP_END
29 class SystemZSubtarget;
30 class SystemZTargetMachine;
32 class SystemZTargetLowering : public TargetLowering {
34 explicit SystemZTargetLowering(SystemZTargetMachine &TM);
36 /// LowerOperation - Provide custom lowering hooks for some operations.
37 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
39 /// getTargetNodeName - This method returns the name of a target specific
41 virtual const char *getTargetNodeName(unsigned Opcode) const;
44 const SystemZSubtarget &Subtarget;
45 const SystemZTargetMachine &TM;
49 #endif // LLVM_TARGET_SystemZ_ISELLOWERING_H