R600 -> AMDGPU rename
[oota-llvm.git] / lib / Target / AMDGPU / AMDGPURegisterInfo.cpp
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 /// \file
11 /// \brief Parent TargetRegisterInfo class common to all hw codegen targets.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #include "AMDGPURegisterInfo.h"
16 #include "AMDGPUTargetMachine.h"
17
18 using namespace llvm;
19
20 AMDGPURegisterInfo::AMDGPURegisterInfo() : AMDGPUGenRegisterInfo(0) {}
21
22 //===----------------------------------------------------------------------===//
23 // Function handling callbacks - Functions are a seldom used feature of GPUS, so
24 // they are not supported at this time.
25 //===----------------------------------------------------------------------===//
26
27 const MCPhysReg AMDGPURegisterInfo::CalleeSavedReg = AMDGPU::NoRegister;
28
29 const MCPhysReg*
30 AMDGPURegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
31   return &CalleeSavedReg;
32 }
33
34 void AMDGPURegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MI,
35                                              int SPAdj,
36                                              unsigned FIOperandNum,
37                                              RegScavenger *RS) const {
38   llvm_unreachable("Subroutines not supported yet");
39 }
40
41 unsigned AMDGPURegisterInfo::getFrameRegister(const MachineFunction &MF) const {
42   return AMDGPU::NoRegister;
43 }
44
45 unsigned AMDGPURegisterInfo::getSubRegFromChannel(unsigned Channel) const {
46   static const unsigned SubRegs[] = {
47     AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2, AMDGPU::sub3, AMDGPU::sub4,
48     AMDGPU::sub5, AMDGPU::sub6, AMDGPU::sub7, AMDGPU::sub8, AMDGPU::sub9,
49     AMDGPU::sub10, AMDGPU::sub11, AMDGPU::sub12, AMDGPU::sub13, AMDGPU::sub14,
50     AMDGPU::sub15
51   };
52
53   assert(Channel < array_lengthof(SubRegs));
54   return SubRegs[Channel];
55 }
56
57 unsigned AMDGPURegisterInfo::getIndirectSubReg(unsigned IndirectIndex) const {
58
59   return getSubRegFromChannel(IndirectIndex);
60 }
61
62 #define GET_REGINFO_TARGET_DESC
63 #include "AMDGPUGenRegisterInfo.inc"