[clang] [llvm] [CodeView] Flatten cmd args in frontend for LF_BUILDINFO (PR #106369)

[Alexandre Ganea via cfe-commits]

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@@ -950,9 +952,16 @@ void CodeViewDebug::emitBuildInfo() {
   if (Asm->TM.Options.MCOptions.Argv0 != nullptr) {
     BuildInfoArgs[BuildInfoRecord::BuildTool] =
         getStringIdTypeIdx(TypeTable, Asm->TM.Options.MCOptions.Argv0);
-    BuildInfoArgs[BuildInfoRecord::CommandLine] = getStringIdTypeIdx(
-        TypeTable, flattenCommandLine(Asm->TM.Options.MCOptions.CommandLineArgs,
-                                      MainSourceFile->getFilename()));
+
+    if (!Asm->TM.Options.MCOptions.CommandlineArgsFlat.empty()) {
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aganea wrote:

Simplify, as per above comments.

https://github.com/llvm/llvm-project/pull/106369