[llvm] [LTO][Pipelines][Coro] Handle coroutines in LTO pipeline (PR #126168)

[Teresa Johnson via llvm-commits]

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+; RUN: llvm-as %s -o %t1.bc
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teresajohnson wrote:

> In the test I don't try to replicate thinlto, just to make sure that buildLTODefaultPipeline does not left coro unprocessed.

Right, that's the regular LTO backend. So I suggest moving this to "llvm/test/LTO/X86". I.e. there is no ThinLTO triggered by this test, and the PR does not affect ThinLTO handling anyway.

https://github.com/llvm/llvm-project/pull/126168