[clang] [llvm] [Pipelines] Do not run CoroSplit and CoroCleanup in LTO pre-link pipeline (PR #90310)

[Reid Kleckner via cfe-commits]

rnk wrote:

Hey, I went ahead and reverted this patch in aa0776de464984e78ae1cc329bf541e9dd43631f  because it is incompatible with ASan ThinLTO builds. I think you have uncovered a latent issue in the ASan + thinlto configuration that is not really the fault of this change, but I didn't see a path to fixing forward in the short term, so I reverted this to get this configuration working again.

I think the next step is to follow up with @vitalybuka to figure out how to reorder the ASan instrumentation pass in the thinlto pipeline.

https://github.com/llvm/llvm-project/pull/90310