1 //===-- PPCMachineFunctionInfo.cpp - Private data used for PowerPC --------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "PPCMachineFunctionInfo.h"
10 #include "llvm/ADT/Twine.h"
11 #include "llvm/IR/DataLayout.h"
12 #include "llvm/MC/MCContext.h"
13 
14 using namespace llvm;
15 
16 void PPCFunctionInfo::anchor() {}
17 
18 MCSymbol *PPCFunctionInfo::getPICOffsetSymbol() const {
19   const DataLayout &DL = MF.getDataLayout();
20   return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
21                                            Twine(MF.getFunctionNumber()) +
22                                            "$poff");
23 }
24 
25 MCSymbol *PPCFunctionInfo::getGlobalEPSymbol() const {
26   const DataLayout &DL = MF.getDataLayout();
27   return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
28                                            "func_gep" +
29                                            Twine(MF.getFunctionNumber()));
30 }
31 
32 MCSymbol *PPCFunctionInfo::getLocalEPSymbol() const {
33   const DataLayout &DL = MF.getDataLayout();
34   return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
35                                            "func_lep" +
36                                            Twine(MF.getFunctionNumber()));
37 }
38 
39 MCSymbol *PPCFunctionInfo::getTOCOffsetSymbol() const {
40   const DataLayout &DL = MF.getDataLayout();
41   return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
42                                            "func_toc" +
43                                            Twine(MF.getFunctionNumber()));
44 }
45 
46 bool PPCFunctionInfo::isLiveInSExt(unsigned VReg) const {
47   for (const std::pair<unsigned, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs)
48     if (LiveIn.first == VReg)
49       return LiveIn.second.isSExt();
50   return false;
51 }
52 
53 bool PPCFunctionInfo::isLiveInZExt(unsigned VReg) const {
54   for (const std::pair<unsigned, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs)
55     if (LiveIn.first == VReg)
56       return LiveIn.second.isZExt();
57   return false;
58 }
59