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

[Ruiling, Song via Phabricator via llvm-commits]

ruiling added a comment.

You seem missed one lit-test update: `Transforms/LoopStrengthReduce/AMDGPU/different-addrspace-crash.ll` which was caught by premerge check.



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Comment at: llvm/test/CodeGen/AMDGPU/agpr-copy-no-free-registers.ll:657
+; GFX908-NEXT:    s_mov_b64 s[22:23], -1
 ; GFX908-NEXT:    s_branch .LBB3_4
 ;
----------------
Why there is no DummyReturnBlock for GFX908?


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https://reviews.llvm.org/D139780