[clang] Make deprecations of some `FileManager` APIs formal (#110014)

Some `FileManager` APIs still return `{File,Directory}Entry` instead of
the preferred `{File,Directory}EntryRef`. These are documented to be
deprecated, but don't have the attribute that warns on their usage. This
PR marks them as such with `LLVM_DEPRECATED()` and replaces their usage
with the recommended counterparts. NFCI.

1 files changed, 6 insertions, 6 deletions

diff --git a/clang/lib/Serialization/ModuleManager.cpp b/clang/lib/Serialization/ModuleManager.cpp
index 51b6429..e74a16b 100644
--- a/clang/lib/Serialization/ModuleManager.cpp
+++ b/clang/lib/Serialization/ModuleManager.cpp
@@ -42,8 +42,8 @@ using namespace clang;
 using namespace serialization;
 
 ModuleFile *ModuleManager::lookupByFileName(StringRef Name) const {
-  auto Entry = FileMgr.getFile(Name, /*OpenFile=*/false,
-                               /*CacheFailure=*/false);
+  auto Entry = FileMgr.getOptionalFileRef(Name, /*OpenFile=*/false,
+                                          /*CacheFailure=*/false);
   if (Entry)
     return lookup(*Entry);
 
@@ -64,8 +64,8 @@ ModuleFile *ModuleManager::lookup(const FileEntry *File) const {
 
 std::unique_ptr<llvm::MemoryBuffer>
 ModuleManager::lookupBuffer(StringRef Name) {
-  auto Entry = FileMgr.getFile(Name, /*OpenFile=*/false,
-                               /*CacheFailure=*/false);
+  auto Entry = FileMgr.getOptionalFileRef(Name, /*OpenFile=*/false,
+                                          /*CacheFailure=*/false);
   if (!Entry)
     return nullptr;
   return std::move(InMemoryBuffers[*Entry]);
@@ -279,8 +279,8 @@ void ModuleManager::removeModules(ModuleIterator First) {
 void
 ModuleManager::addInMemoryBuffer(StringRef FileName,
                                  std::unique_ptr<llvm::MemoryBuffer> Buffer) {
-  const FileEntry *Entry =
-      FileMgr.getVirtualFile(FileName, Buffer->getBufferSize(), 0);
+  FileEntryRef Entry =
+      FileMgr.getVirtualFileRef(FileName, Buffer->getBufferSize(), 0);
   InMemoryBuffers[Entry] = std::move(Buffer);
 }