[PATCH] D29966: [SelectionDAG] Try to recompute LiveOutInfo of PHI

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml updated this revision to Diff 93379.
junbuml added a comment.

Sorry, I dropped the test case by mistake in my previous update; added it now. 
Yes, the worst-case recursion depth is the number of blocks if every block has back edges, and a value used in the last block is passed through PHIs in every block.


https://reviews.llvm.org/D29966

Files:
  include/llvm/CodeGen/FunctionLoweringInfo.h
  lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
  test/CodeGen/AArch64/selectdag-assertzext.ll

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