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[NFC] Generalize target-specific module loading…

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…from 1-2 target-specific names to 0-N target-specific names.
This commit is contained in:
Brent Royal-Gordon
2019-02-22 11:19:29 -08:00
parent 70ba0aab05
commit 0df6ff4797
1 changed files with 19 additions and 24 deletions
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43
lib/Serialization/SerializedModuleLoader.cpp
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@@ -167,17 +167,17 @@ SerializedModuleLoaderBase::findModule(AccessPathElem moduleID,
ModuleFilenamePair fileNames(moduleName);
StringRef archName = Ctx.LangOpts.Target.getArchName();
ModuleFilenamePair archFileNames(archName);
SmallVector<ModuleFilenamePair, 4> targetFileNamePairs;
targetFileNamePairs.push_back(archName);
// FIXME: We used to use "major architecture" names for these files---the
// names checked in "#if arch(...)". Fall back to that name in the one case
// where it's different from what Swift 4.2 supported: 32-bit ARM platforms.
// We should be able to drop this once there's an Xcode that supports the
// new names.
StringRef alternateArchName;
if (Ctx.LangOpts.Target.getArch() == llvm::Triple::ArchType::arm)
alternateArchName = "arm";
ModuleFilenamePair alternateArchFileNames(alternateArchName);
targetFileNamePairs.push_back(StringRef("arm"));
auto &fs = *Ctx.SourceMgr.getFileSystem();
isFramework = false;
@@ -188,30 +188,25 @@ SerializedModuleLoaderBase::findModule(AccessPathElem moduleID,
/// was diagnosed, or None if neither one happened and the search should
/// continue.
auto findTargetSpecificModuleFiles = [&]() -> Optional<bool> {
auto result = findModuleFilesInDirectory(moduleID, currPath,
archFileNames.module,
archFileNames.moduleDoc,
moduleBuffer, moduleDocBuffer);
if (result == std::errc::no_such_file_or_directory &&
!alternateArchName.empty()) {
result = findModuleFilesInDirectory(moduleID, currPath,
alternateArchFileNames.module,
alternateArchFileNames.moduleDoc,
moduleBuffer, moduleDocBuffer);
}
if (result == std::errc::no_such_file_or_directory) {
if (maybeDiagnoseArchitectureMismatch(moduleID.second, moduleName,
archName, currPath)) {
return false;
for (const auto &targetFileNames : targetFileNamePairs) {
auto result = findModuleFilesInDirectory(moduleID, currPath,
targetFileNames.module, targetFileNames.moduleDoc,
moduleBuffer, moduleDocBuffer);
if (!result) {
return true;
} else if (result != std::errc::no_such_file_or_directory) {
return None;
}
}
if (!result)
return true;
else
// We can only get here if all targetFileNamePairs failed with
// 'std::errc::no_such_file_or_directory'.
if (maybeDiagnoseArchitectureMismatch(moduleID.second,
moduleName, archName, currPath)) {
return false;
} else {
return None;
}
};
for (auto path : Ctx.SearchPathOpts.ImportSearchPaths) {