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2f6a8ddfe8
This breaks the OpenFlags enumeration into two separate enumerations: OpenFlags and CreationDisposition. The first controls the behavior of the API depending on whether or not the target file already exists, and is not a flags-based enum. The second controls more flags-like values. This yields a more easy to understand API, while also allowing flags to be passed to the openForRead api, where most of the values didn't make sense before. This also makes the apis more testable as it becomes easy to enumerate all the configurations which make sense, so I've added many new tests to exercise all the different values. llvm-svn: 334221
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
//===- TestingSupport.cpp - Convert objects files into test files --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/LEB128.h"
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#include "llvm/Support/raw_ostream.h"
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#include <functional>
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#include <system_error>
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using namespace llvm;
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using namespace object;
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int convertForTestingMain(int argc, const char *argv[]) {
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cl::opt<std::string> InputSourceFile(cl::Positional, cl::Required,
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cl::desc("<Source file>"));
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cl::opt<std::string> OutputFilename(
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"o", cl::Required,
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cl::desc(
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"File with the profile data obtained after an instrumented run"));
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cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
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auto ObjErr = llvm::object::ObjectFile::createObjectFile(InputSourceFile);
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if (!ObjErr) {
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std::string Buf;
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raw_string_ostream OS(Buf);
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logAllUnhandledErrors(ObjErr.takeError(), OS, "");
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OS.flush();
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errs() << "error: " << Buf;
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return 1;
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}
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ObjectFile *OF = ObjErr.get().getBinary();
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auto BytesInAddress = OF->getBytesInAddress();
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if (BytesInAddress != 8) {
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errs() << "error: 64 bit binary expected\n";
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return 1;
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}
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// Look for the sections that we are interested in.
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int FoundSectionCount = 0;
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SectionRef ProfileNames, CoverageMapping;
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auto ObjFormat = OF->getTripleObjectFormat();
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for (const auto &Section : OF->sections()) {
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StringRef Name;
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if (Section.getName(Name))
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return 1;
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if (Name == llvm::getInstrProfSectionName(IPSK_name, ObjFormat,
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/*AddSegmentInfo=*/false)) {
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ProfileNames = Section;
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} else if (Name == llvm::getInstrProfSectionName(
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IPSK_covmap, ObjFormat, /*AddSegmentInfo=*/false)) {
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CoverageMapping = Section;
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} else
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continue;
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++FoundSectionCount;
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}
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if (FoundSectionCount != 2)
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return 1;
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// Get the contents of the given sections.
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uint64_t ProfileNamesAddress = ProfileNames.getAddress();
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StringRef CoverageMappingData;
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StringRef ProfileNamesData;
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if (CoverageMapping.getContents(CoverageMappingData) ||
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ProfileNames.getContents(ProfileNamesData))
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return 1;
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int FD;
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if (auto Err = sys::fs::openFileForWrite(OutputFilename, FD)) {
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errs() << "error: " << Err.message() << "\n";
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return 1;
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}
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raw_fd_ostream OS(FD, true);
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OS << "llvmcovmtestdata";
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encodeULEB128(ProfileNamesData.size(), OS);
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encodeULEB128(ProfileNamesAddress, OS);
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OS << ProfileNamesData;
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// Coverage mapping data is expected to have an alignment of 8.
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for (unsigned Pad = OffsetToAlignment(OS.tell(), 8); Pad; --Pad)
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OS.write(uint8_t(0));
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OS << CoverageMappingData;
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return 0;
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}
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