Whitney Tsang 01e64c9712 [LoopFusion] Update second loop guard non loop successor phis incoming
blocks.

Summary: The current LoopFusion forget to update the incoming block of
the phis in second loop guard non loop successor from second loop guard
block to first loop guard block. A test case is provided to better
understand the problem.
Reviewed By: jdoerfert
Subscribers: hiraditya, llvm-commits
Tag: LLVM
Differential Revision: https://reviews.llvm.org/D81421
2020-06-09 21:14:51 +00:00
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