[clang] Correctly link and optimize device libraries with -mlink-builtin-bitcode (PR #69371)

[Joseph Huber via cfe-commits]

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@@ -45,7 +46,8 @@ namespace clang {
                          const TargetOptions &TOpts, const LangOptions &LOpts,
                          StringRef TDesc, llvm::Module *M, BackendAction Action,
                          llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS,
-                         std::unique_ptr<raw_pwrite_stream> OS);
+                         std::unique_ptr<raw_pwrite_stream> OS,
+                         BackendConsumer *BC = NULL);
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jhuber6 wrote:

Use `nullptr` in C++, it's type safe.

https://github.com/llvm/llvm-project/pull/69371