[PATCH] D80477: [LoopUnroll] Support loop with multi exiting blocks

[Whitney Tsang via Phabricator via llvm-commits]

Whitney created this revision.
Whitney added reviewers: dmgreen, jdoerfert, Meinersbur, kbarton, bmahjour, etiotto, fhahn.
Whitney added a project: LLVM.
Herald added subscribers: llvm-commits, zzheng, hiraditya.

Remove the limitation in LoopUnrollPass.
The current loop unroll pass can unroll loops with a single latch or header
that's a conditional branch exiting the loop.
Now it supports multi-exiting blocks, and also allow non header or latch exiting block.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D80477

Files:
  llvm/lib/Transforms/Utils/LoopUnroll.cpp
  llvm/test/Transforms/LoopUnroll/nonlatchcondbr.ll

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