================
@@ -4687,6 +4699,15 @@ void ASTWriter::collectNonAffectingInputFiles() {
NonAffectingFileIDAdjustments.push_back(FileIDAdjustment);
NonAffectingOffsetAdjustments.push_back(OffsetAdjustment);
+ const bool IncludeVFSUsage =
+ PP->getHeaderSearchInfo().getHeaderSearchOpts().ModulesIncludeVFSUsage;
+ FileManager &FileMgr = PP->getFileManager();
+ FileMgr.trackVFSUsage(true);
----------------
jansvoboda11 wrote:
The scope of tracking is fairly long. Instead of intertwining it with the logic
for finding affecting files and constructing the offset adjustment table, I
think it would be clearer to have a separate loop at the end of this function:
```c++
if (IncludeVFSUsage)
for (unsigned I = 1; I != N; ++I)
if (IsSLocAffecting[I]) {
SrcMgr::FileInfo File = /*...*/;
FileMgr.getVirtualFileSystem().exists(
File.getContentCache().OrigEntry->getNameAsRequested());
}
```
https://github.com/llvm/llvm-project/pull/73734
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