[clang] [clang][CIR] Pass VFS to command-line parsing (PR #184226)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Jan Svoboda (jansvoboda11)

<details>
<summary>Changes</summary>

This explicitly passes Clang's VFS to MLIR command-line parsing that runs when ClangIR is enabled. This matches the rest of Clang and fixes a sandbox violation.

---
Full diff: https://github.com/llvm/llvm-project/pull/184226.diff


1 Files Affected:

- (modified) clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp (+3-1) 


``````````diff
diff --git a/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp b/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
index 05f646b43e3c4..c8ad63bc989a4 100644
--- a/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ b/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -293,7 +293,9 @@ bool ExecuteCompilerInvocation(CompilerInstance *Clang) {
     for (unsigned i = 0; i != NumArgs; ++i)
       Args[i + 1] = Clang->getFrontendOpts().MLIRArgs[i].c_str();
     Args[NumArgs + 1] = nullptr;
-    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args.get());
+    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args.get(),
+                                      /*Description=*/"", /*Errs=*/nullptr,
+                                      &Clang->getVirtualFileSystem());
   }
 #endif
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/184226