[PATCH] D139780: [AMDGPU] Unify divergent nodes if the PostDom tree has one root

[Ruiling, Song via Phabricator via llvm-commits]

ruiling added a comment.

In D139780#4004766 <https://reviews.llvm.org/D139780#4004766>, @arsenm wrote:

> I haven't looked closely but some of these test changes look worse

We need this change to correctly structurize the function that ends with an infinite loop. Most test changes are minor except unstructured-cfg-def-use-issue.ll. This is mainly because it is compiled incorrectly before. We have to structurize a function if there is a divergent branch.


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https://reviews.llvm.org/D139780