[clangd] Log cc1 args at verbose level.

Summary: This will help debugging driver issues.

Reviewers: kbobyrev

Subscribers: ilya-biryukov, javed.absar, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70832

1 files changed, 4 insertions, 1 deletions

diff --git a/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
index ab62b633cda..18c4814bbd5 100644
--- a/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
+++ b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
@@ -26,7 +26,8 @@ using namespace llvm::opt;
 
 std::unique_ptr<CompilerInvocation> clang::createInvocationFromCommandLine(
     ArrayRef<const char *> ArgList, IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
-    IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS, bool ShouldRecoverOnErorrs) {
+    IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS, bool ShouldRecoverOnErorrs,
+    std::vector<std::string> *CC1Args) {
   if (!Diags.get()) {
     // No diagnostics engine was provided, so create our own diagnostics object
     // with the default options.
@@ -89,6 +90,8 @@ std::unique_ptr<CompilerInvocation> clang::createInvocationFromCommandLine(
   }
 
   const ArgStringList &CCArgs = Cmd.getArguments();
+  if (CC1Args)
+    *CC1Args = {CCArgs.begin(), CCArgs.end()};
   auto CI = std::make_unique<CompilerInvocation>();
   if (!CompilerInvocation::CreateFromArgs(*CI, CCArgs, *Diags) &&
       !ShouldRecoverOnErorrs)