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[Frontend] Use vfs for directory iteration while searching PCHs. NFCI 

Use the vfs lookup instead of real filesytem and handle the case where
-include-pch is a directory and this dir is searched for a PCH.

llvm-svn: 289459
This commit is contained in:
Bruno Cardoso Lopes 2016-12-12 19:28:21 +00:00
parent 4b75b8726d
commit b4d56f1a4f
1 changed files with 4 additions and 3 deletions
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7
clang/lib/Frontend/FrontendAction.cpp
View File

@ -288,14 +288,15 @@ bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
SmallString<128> DirNative;
llvm::sys::path::native(PCHDir->getName(), DirNative);
bool Found = false;
for (llvm::sys::fs::directory_iterator Dir(DirNative, EC), DirEnd;
vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
for (vfs::directory_iterator Dir = FS.dir_begin(DirNative, EC), DirEnd;
Dir != DirEnd && !EC; Dir.increment(EC)) {
// Check whether this is an acceptable AST file.
if (ASTReader::isAcceptableASTFile(
Dir->path(), FileMgr, CI.getPCHContainerReader(),
Dir->getName(), FileMgr, CI.getPCHContainerReader(),
CI.getLangOpts(), CI.getTargetOpts(), CI.getPreprocessorOpts(),
SpecificModuleCachePath)) {
PPOpts.ImplicitPCHInclude = Dir->path();
PPOpts.ImplicitPCHInclude = Dir->getName();
Found = true;
break;
}