[PATCH] D156414: [AMDGPU] Break Large PHIs: Take whole PHI chains into account

[Matt Arsenault via Phabricator via llvm-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

I've been debating just introduce a late large register tuple splitting pass



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Comment at: llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp:1809
+  // multiple times, or even worse, doing it in a loop.
+  DenseSet<const PHINode *> WorkList;
+  collectPHINodes(I, WorkList);
----------------
These could probably be SmallPtrSets


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D156414