[PATCH] D88823: [CodeGen][TailDuplicator] Don't duplicate blocks with INLINEASM_BR

[Bill Wendling via Phabricator via llvm-commits]

void added a comment.

In D88823#2312092 <https://reviews.llvm.org/D88823#2312092>, @jyknight wrote:

> Hm, it doesn't seem like it should be a problem to duplicate an inlineasm_br instruction. I'm interested to see what's going wrong here.

After sleeping on it, I think it's when a PHI node's created in the indirect destination. We can't handle that, because we assume that any variable used in an indirect path dominates all blocks coming into it. I'll update this bug to reflect that.


Repository:
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  https://reviews.llvm.org/D88823/new/

https://reviews.llvm.org/D88823