[llvm] f9dbf73 - [llvm] Use the VFS to get the real path in `FileCollector` (#160943)

[via llvm-commits]

Author: Jan Svoboda
Date: 2025-09-29T09:00:37-07:00
New Revision: f9dbf738d81492eb7891655c5d4b2f481215eee0

URL: https://github.com/llvm/llvm-project/commit/f9dbf738d81492eb7891655c5d4b2f481215eee0
DIFF: https://github.com/llvm/llvm-project/commit/f9dbf738d81492eb7891655c5d4b2f481215eee0.diff

LOG: [llvm] Use the VFS to get the real path in `FileCollector` (#160943)

This PR starts using the correct VFS for getting file's real path in
`FileCollector` instead of using the real FS directly. This matches
compiler's behavior for other input files.

Added: 
    

Modified: 
    llvm/lib/Support/FileCollector.cpp

Removed: 
    


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diff  --git a/llvm/lib/Support/FileCollector.cpp b/llvm/lib/Support/FileCollector.cpp
index 5dc224a6d427b..1e5de2c49a2b3 100644
--- a/llvm/lib/Support/FileCollector.cpp
+++ b/llvm/lib/Support/FileCollector.cpp
@@ -68,9 +68,8 @@ void FileCollector::PathCanonicalizer::updateWithRealPath(
   SmallString<256> RealPath;
   auto DirWithSymlink = CachedDirs.find(Directory);
   if (DirWithSymlink == CachedDirs.end()) {
-    // FIXME: Should this be a call to FileSystem::getRealpath(), in some
-    // cases? What if there is nothing on disk?
-    if (sys::fs::real_path(Directory, RealPath))
+    // FIXME: What if there is nothing on disk?
+    if (VFS->getRealPath(Directory, RealPath))
       return;
     CachedDirs[Directory] = std::string(RealPath);
   } else {