[clang] [CUDA] Add device-side kernel launch support (PR #165519)

[via cfe-commits]

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@@ -525,6 +564,11 @@ Expected<SmallVector<StringRef>> getInput(const ArgList &Args) {
           object::Archive::create(Buffer);
       if (!LibFile)
         return LibFile.takeError();
+      // Skip extracting archives with fat binaries. Forward them to nvlink.
+      if (hasFatBinary(**LibFile)) {
+        ForwardArchives.emplace_back(Args.MakeArgString(*Filename));
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darkbuck wrote:

fatbinary format is not publicly available. AFAIK, NV tools are necessary to extract device object files from fatbin. Shall we just put those fatbin archives at the end? `cudadevrt` is the only fatbin archive I met so far.

https://github.com/llvm/llvm-project/pull/165519