[clang] [clang][Lex] Use getBufferName() in isInPredefinedFile() (PR #141490)

[Timm Baeder via cfe-commits]

https://github.com/tbaederr created https://github.com/llvm/llvm-project/pull/141490

I don't think this depends on #line directives, to it should be fine to use getBufferName.

>From e8e0bddda7dcc5e64624912e68f5de8d7ff485eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <tbaeder at redhat.com>
Date: Mon, 26 May 2025 13:59:52 +0200
Subject: [PATCH] [clang][Lex] Use getBufferName() in isInPredefinedFile()

I don't think this depends on #line directives, to it should be fine to
use getBufferName.
---
 clang/include/clang/Basic/SourceManager.h | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/clang/include/clang/Basic/SourceManager.h b/clang/include/clang/Basic/SourceManager.h
index cd3dac9133223..cb5ed219bd000 100644
--- a/clang/include/clang/Basic/SourceManager.h
+++ b/clang/include/clang/Basic/SourceManager.h
@@ -1531,11 +1531,8 @@ class SourceManager : public RefCountedBase<SourceManager> {
 
   /// Returns whether \p Loc is located in a built-in or command line source.
   bool isInPredefinedFile(SourceLocation Loc) const {
-    PresumedLoc Presumed = getPresumedLoc(Loc);
-    if (Presumed.isInvalid())
-      return false;
-    StringRef Filename(Presumed.getFilename());
-    return Filename == "<built-in>" || Filename == "<command line>";
+    StringRef BufferName = getBufferName(Loc);
+    return BufferName == "<built-in>" || BufferName == "<command line>";
   }
 
   /// Returns if a SourceLocation is in a system header.