PPCMachineFunctionInfo.cpp revision 327952 
1//===-- PPCMachineFunctionInfo.cpp - Private data used for PowerPC --------===//
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#include "PPCMachineFunctionInfo.h"
11#include "llvm/ADT/Twine.h"
12#include "llvm/IR/DataLayout.h"
13#include "llvm/MC/MCContext.h"
14
15using namespace llvm;
16
17void PPCFunctionInfo::anchor() {}
18
19MCSymbol *PPCFunctionInfo::getPICOffsetSymbol() const {
20  const DataLayout &DL = MF.getDataLayout();
21  return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
22                                           Twine(MF.getFunctionNumber()) +
23                                           "$poff");
24}
25
26MCSymbol *PPCFunctionInfo::getGlobalEPSymbol() const {
27  const DataLayout &DL = MF.getDataLayout();
28  return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
29                                           "func_gep" +
30                                           Twine(MF.getFunctionNumber()));
31}
32
33MCSymbol *PPCFunctionInfo::getLocalEPSymbol() const {
34  const DataLayout &DL = MF.getDataLayout();
35  return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
36                                           "func_lep" +
37                                           Twine(MF.getFunctionNumber()));
38}
39
40MCSymbol *PPCFunctionInfo::getTOCOffsetSymbol() const {
41  const DataLayout &DL = MF.getDataLayout();
42  return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
43                                           "func_toc" +
44                                           Twine(MF.getFunctionNumber()));
45}
46
47bool PPCFunctionInfo::isLiveInSExt(unsigned VReg) const {
48  for (const std::pair<unsigned, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs)
49    if (LiveIn.first == VReg)
50      return LiveIn.second.isSExt();
51  return false;
52}
53
54bool PPCFunctionInfo::isLiveInZExt(unsigned VReg) const {
55  for (const std::pair<unsigned, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs)
56    if (LiveIn.first == VReg)
57      return LiveIn.second.isZExt();
58  return false;
59}
60