[PATCH] D132084: [Cloning] handle blockaddress array clone in the same module

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

In general, you can't clone when indirectbrs are involved: since the blockaddress is a constant, it needs to be valid for all the cloned versions of the indirectbr.  And you can't make different basic blocks with the same address.

I'm not sure why you need to clone code in this context, but it's possible to lower indirectbrs to switch instructions if necessary (at the cost of slightly slower code at runtime).  See IndirectBrExpandPass.


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https://reviews.llvm.org/D132084