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comparison llvm/unittests/CodeGen/TestAsmPrinter.cpp @ 221:79ff65ed7e25

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LLVM12 Original
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 15 Jun 2021 19:15:29 +0900
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children c4bab56944e8
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220:42394fc6a535 221:79ff65ed7e25
1 //===--- unittests/CodeGen/TestAsmPrinter.cpp -------------------*- C++ -*-===//
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 "TestAsmPrinter.h"
10 #include "llvm/ADT/Triple.h"
11 #include "llvm/CodeGen/AsmPrinter.h"
12 #include "llvm/MC/MCAsmInfo.h"
13 #include "llvm/MC/MCContext.h"
14 #include "llvm/Support/TargetRegistry.h"
15 #include "llvm/Target/TargetLoweringObjectFile.h"
16 #include "llvm/Target/TargetMachine.h"
17
18 using namespace llvm;
19 using ::testing::StrictMock;
20
21 // Note: a non-const reference argument cannot be passed through
22 // testing::StrictMock, thus, we pass a pointer and dereference it here.
23 MockMCStreamer::MockMCStreamer(MCContext *Ctx) : MCStreamer(*Ctx) {}
24
25 MockMCStreamer::~MockMCStreamer() = default;
26
27 TestAsmPrinter::TestAsmPrinter() = default;
28
29 TestAsmPrinter::~TestAsmPrinter() = default;
30
31 llvm::Expected<std::unique_ptr<TestAsmPrinter>>
32 TestAsmPrinter::create(const std::string &TripleStr, uint16_t DwarfVersion,
33 dwarf::DwarfFormat DwarfFormat) {
34 std::string ErrorStr;
35 const Target *TheTarget = TargetRegistry::lookupTarget(TripleStr, ErrorStr);
36 if (!TheTarget)
37 return std::unique_ptr<TestAsmPrinter>();
38
39 std::unique_ptr<TestAsmPrinter> TestPrinter(new TestAsmPrinter);
40 if (llvm::Error E =
41 TestPrinter->init(TheTarget, TripleStr, DwarfVersion, DwarfFormat))
42 return std::move(E);
43
44 return std::move(TestPrinter);
45 }
46
47 // Note:: based on dwarfgen::Generator::init() from
48 // llvm/unittests/DebugInfo/DWARF/DwarfGenerator.cpp
49 llvm::Error TestAsmPrinter::init(const Target *TheTarget, StringRef TripleName,
50 uint16_t DwarfVersion,
51 dwarf::DwarfFormat DwarfFormat) {
52 TM.reset(TheTarget->createTargetMachine(TripleName, "", "", TargetOptions(),
53 None));
54 if (!TM)
55 return make_error<StringError>("no target machine for target " + TripleName,
56 inconvertibleErrorCode());
57
58 Triple TheTriple(TripleName);
59 MC.reset(new MCContext(TheTriple, TM->getMCAsmInfo(), TM->getMCRegisterInfo(),
60 TM->getMCSubtargetInfo()));
61 TM->getObjFileLowering()->Initialize(*MC, *TM);
62 MC->setObjectFileInfo(TM->getObjFileLowering());
63
64 MS = new StrictMock<MockMCStreamer>(MC.get());
65
66 Asm.reset(
67 TheTarget->createAsmPrinter(*TM, std::unique_ptr<MockMCStreamer>(MS)));
68 if (!Asm)
69 return make_error<StringError>("no asm printer for target " + TripleName,
70 inconvertibleErrorCode());
71
72 // Set the DWARF version correctly on all classes that we use.
73 MC->setDwarfVersion(DwarfVersion);
74 Asm->setDwarfVersion(DwarfVersion);
75
76 // Set the DWARF format.
77 MC->setDwarfFormat(DwarfFormat);
78
79 return Error::success();
80 }
81
82 void TestAsmPrinter::setDwarfUsesRelocationsAcrossSections(bool Enable) {
83 struct HackMCAsmInfo : MCAsmInfo {
84 void setDwarfUsesRelocationsAcrossSections(bool Enable) {
85 DwarfUsesRelocationsAcrossSections = Enable;
86 }
87 };
88 static_cast<HackMCAsmInfo *>(const_cast<MCAsmInfo *>(TM->getMCAsmInfo()))
89 ->setDwarfUsesRelocationsAcrossSections(Enable);
90 }