[PATCH] D113497: [IPSCCP] Support unfeasible default dests for switch.

[Florian Hahn via Phabricator via llvm-commits]

fhahn added a comment.

In D113497#3155755 <https://reviews.llvm.org/D113497#3155755>, @lebedev.ri wrote:

> LG.
>
> If SCCP runs again, will it then again create a new unreachable block
> for the default that is already pointing at the unreachable block?
> Should it not do such redundant work?

Good point. In practice I think IPSCCP is only run twice when doing LTO, so it's probably not a big deal. But let me check if the default dst is already unreachable.


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https://reviews.llvm.org/D113497