Revert "[NFC] Explicitly pass a VFS when creating DiagnosticsEngine (#115852)"

Reverted for causing:
https://github.com/llvm/llvm-project/issues/117145

This reverts commit bdd10d9d249bd1c2a45e3de56a5accd97e953458.

1 files changed, 6 insertions, 8 deletions

diff --git a/clang/unittests/Frontend/FrontendActionTest.cpp b/clang/unittests/Frontend/FrontendActionTest.cpp
index 75e1667..6ce9ba6 100644
--- a/clang/unittests/Frontend/FrontendActionTest.cpp
+++ b/clang/unittests/Frontend/FrontendActionTest.cpp
@@ -20,7 +20,6 @@
 #include "clang/Serialization/InMemoryModuleCache.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Support/VirtualFileSystem.h"
 #include "llvm/TargetParser/Triple.h"
 #include "gtest/gtest.h"
 
@@ -91,7 +90,7 @@ TEST(ASTFrontendAction, Sanity) {
   invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
   CompilerInstance compiler;
   compiler.setInvocation(std::move(invocation));
-  compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
+  compiler.createDiagnostics();
 
   TestASTFrontendAction test_action;
   ASSERT_TRUE(compiler.ExecuteAction(test_action));
@@ -111,7 +110,7 @@ TEST(ASTFrontendAction, IncrementalParsing) {
   invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
   CompilerInstance compiler;
   compiler.setInvocation(std::move(invocation));
-  compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
+  compiler.createDiagnostics();
 
   TestASTFrontendAction test_action(/*enableIncrementalProcessing=*/true);
   ASSERT_TRUE(compiler.ExecuteAction(test_action));
@@ -138,7 +137,7 @@ TEST(ASTFrontendAction, LateTemplateIncrementalParsing) {
   invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
   CompilerInstance compiler;
   compiler.setInvocation(std::move(invocation));
-  compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
+  compiler.createDiagnostics();
 
   TestASTFrontendAction test_action(/*enableIncrementalProcessing=*/true,
                                     /*actOnEndOfTranslationUnit=*/true);
@@ -184,7 +183,7 @@ TEST(PreprocessorFrontendAction, EndSourceFile) {
   Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
   CompilerInstance Compiler;
   Compiler.setInvocation(std::move(Invocation));
-  Compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
+  Compiler.createDiagnostics();
 
   TestPPCallbacks *Callbacks = new TestPPCallbacks;
   TestPPCallbacksFrontendAction TestAction(Callbacks);
@@ -246,8 +245,7 @@ TEST(ASTFrontendAction, ExternalSemaSource) {
   CompilerInstance Compiler;
   Compiler.setInvocation(std::move(Invocation));
   auto *TDC = new TypoDiagnosticConsumer;
-  Compiler.createDiagnostics(*llvm::vfs::getRealFileSystem(), TDC,
-                             /*ShouldOwnClient=*/true);
+  Compiler.createDiagnostics(TDC, /*ShouldOwnClient=*/true);
   Compiler.setExternalSemaSource(new TypoExternalSemaSource(Compiler));
 
   SyntaxOnlyAction TestAction;
@@ -279,7 +277,7 @@ TEST(GeneratePCHFrontendAction, CacheGeneratedPCH) {
     Invocation->getTargetOpts().Triple = "x86_64-apple-darwin19.0.0";
     CompilerInstance Compiler;
     Compiler.setInvocation(std::move(Invocation));
-    Compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
+    Compiler.createDiagnostics();
 
     GeneratePCHAction TestAction;
     ASSERT_TRUE(Compiler.ExecuteAction(TestAction));