1 //===-- AMDGPURegisterInfo.cpp - AMDGPU Register Information -------------===//
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 // Parent TargetRegisterInfo class common to all hw codegen targets.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "AMDGPURegisterInfo.h"
15 #include "AMDGPUTargetMachine.h"
16 
17 using namespace llvm;
18 
AMDGPURegisterInfo(TargetMachine & tm,const TargetInstrInfo & tii)19 AMDGPURegisterInfo::AMDGPURegisterInfo(TargetMachine &tm,
20     const TargetInstrInfo &tii)
21 : AMDGPUGenRegisterInfo(0),
22   TM(tm),
23   TII(tii)
24   { }
25 
26 //===----------------------------------------------------------------------===//
27 // Function handling callbacks - Functions are a seldom used feature of GPUS, so
28 // they are not supported at this time.
29 //===----------------------------------------------------------------------===//
30 
31 const uint16_t AMDGPURegisterInfo::CalleeSavedReg = AMDGPU::NoRegister;
32 
getCalleeSavedRegs(const MachineFunction * MF) const33 const uint16_t* AMDGPURegisterInfo::getCalleeSavedRegs(const MachineFunction *MF)
34                                                                          const {
35   return &CalleeSavedReg;
36 }
37 
eliminateFrameIndex(MachineBasicBlock::iterator MI,int SPAdj,RegScavenger * RS) const38 void AMDGPURegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MI,
39                                              int SPAdj,
40                                              RegScavenger *RS) const {
41   assert(!"Subroutines not supported yet");
42 }
43 
getFrameRegister(const MachineFunction & MF) const44 unsigned AMDGPURegisterInfo::getFrameRegister(const MachineFunction &MF) const {
45   assert(!"Subroutines not supported yet");
46   return 0;
47 }
48 
49 #define GET_REGINFO_TARGET_DESC
50 #include "AMDGPUGenRegisterInfo.inc"
51