[llvm] [llvm][tools] Improve llvm-gpu-loader checks (PR #184791)

[Alex Duran via llvm-commits]

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@@ -242,15 +243,22 @@ int main(int argc, const char **argv, const char **envp) {
     }
     InitArgs.NumPlatforms = 1;
     InitArgs.Platforms = &Backend;
+  } else {
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adurang wrote:

I'm not sure I see the benefit of doing that. The only other format we support right now is the bitcode and we could add a check here. I think it's better to error here with a more meaningful message than later with a "no device found" error which was due to an unsupported format.

https://github.com/llvm/llvm-project/pull/184791