[clang] [clang] NFC: Deprecate `FileEntry::getName()` (PR #68157)

[Jan Svoboda via cfe-commits]

https://github.com/jansvoboda11 created https://github.com/llvm/llvm-project/pull/68157

All uses of `FileEntry::getName()` were removed in favor of `FileEntryRef::getName()`. This patch finally formally deprecates that function. The plan is to remove it entirely in the main branch after we cut the release branch for LLVM 18.

>From f16e23a861e930711cbc8ac4c4581c7f08317100 Mon Sep 17 00:00:00 2001
From: Jan Svoboda <jan_svoboda at apple.com>
Date: Tue, 3 Oct 2023 13:40:07 -0700
Subject: [PATCH] [clang] NFC: Deprecate `FileEntry::getName()`

---
 clang/include/clang/Basic/FileEntry.h     | 1 +
 clang/unittests/Basic/FileManagerTest.cpp | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/clang/include/clang/Basic/FileEntry.h b/clang/include/clang/Basic/FileEntry.h
index 23237a9326f84b6..e838c9e27b6370a 100644
--- a/clang/include/clang/Basic/FileEntry.h
+++ b/clang/include/clang/Basic/FileEntry.h
@@ -425,6 +425,7 @@ class FileEntry {
 
 public:
   ~FileEntry();
+  LLVM_DEPRECATED("Use FileEntryRef::getName() instead.", "")
   StringRef getName() const { return LastRef->getName(); }
 
   StringRef tryGetRealPathName() const { return RealPathName; }
diff --git a/clang/unittests/Basic/FileManagerTest.cpp b/clang/unittests/Basic/FileManagerTest.cpp
index bf30fabb7cd8878..d32036d975ce9cf 100644
--- a/clang/unittests/Basic/FileManagerTest.cpp
+++ b/clang/unittests/Basic/FileManagerTest.cpp
@@ -284,7 +284,6 @@ TEST_F(FileManagerTest, getFileRefReturnsCorrectNameForDifferentStatPath) {
   ASSERT_FALSE(!F1Alias);
   ASSERT_FALSE(!F1Alias2);
   EXPECT_EQ("dir/f1.cpp", F1->getName());
-  EXPECT_EQ("dir/f1.cpp", F1->getFileEntry().getName());
   EXPECT_EQ("dir/f1.cpp", F1Alias->getName());
   EXPECT_EQ("dir/f1.cpp", F1Alias2->getName());
   EXPECT_EQ(&F1->getFileEntry(), &F1Alias->getFileEntry());
@@ -303,7 +302,6 @@ TEST_F(FileManagerTest, getFileRefReturnsCorrectNameForDifferentStatPath) {
   ASSERT_FALSE(!F2Alias);
   ASSERT_FALSE(!F2Alias2);
   EXPECT_EQ("dir/f2.cpp", F2->getName());
-  EXPECT_EQ("dir/f2.cpp", F2->getFileEntry().getName());
   EXPECT_EQ("dir/f2.cpp", F2Alias->getName());
   EXPECT_EQ("dir/f2.cpp", F2Alias2->getName());
   EXPECT_EQ(&F2->getFileEntry(), &F2Alias->getFileEntry());