1 //===-- SIISelLowering.h - SI 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 // SI DAG Lowering interface definition
12 //===----------------------------------------------------------------------===//
14 #ifndef SIISELLOWERING_H
15 #define SIISELLOWERING_H
17 #include "AMDGPUISelLowering.h"
18 #include "SIInstrInfo.h"
22 class SITargetLowering : public AMDGPUTargetLowering
24 const SIInstrInfo * TII;
26 /// AppendS_WAITCNT - Memory reads and writes are syncronized using the
27 /// S_WAITCNT instruction. This function takes the most conservative
28 /// approach and inserts an S_WAITCNT instruction after every read and
30 void AppendS_WAITCNT(MachineInstr *MI, MachineBasicBlock &BB,
31 MachineBasicBlock::iterator I) const;
32 void LowerSI_INTERP(MachineInstr *MI, MachineBasicBlock &BB,
33 MachineBasicBlock::iterator I, MachineRegisterInfo & MRI) const;
34 void LowerSI_INTERP_CONST(MachineInstr *MI, MachineBasicBlock &BB,
35 MachineBasicBlock::iterator I) const;
36 void LowerSI_V_CNDLT(MachineInstr *MI, MachineBasicBlock &BB,
37 MachineBasicBlock::iterator I, MachineRegisterInfo & MRI) const;
38 void lowerUSE_SGPR(MachineInstr *MI, MachineFunction * MF,
39 MachineRegisterInfo & MRI) const;
41 SITargetLowering(TargetMachine &tm);
42 virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr * MI,
43 MachineBasicBlock * BB) const;
46 } // End namespace llvm
48 #endif //SIISELLOWERING_H