[PATCH] D21720: Unroll for uncountable loops

[Evgeny Stupachenko via llvm-commits]

evstupac updated this revision to Diff 78772.
evstupac added a comment.

1. Set "disable unroll" for loops unrolled by "force unroll". The reason is that on LTO unroll pass could be called multiple times and we will try to unroll unless exceed threshold. This is not critical, but makes unroll behavior dependent on LTO.
2. Add missed unit tests.
3. Fix calculations for phis used outside of the loop only.


Repository:
  rL LLVM

https://reviews.llvm.org/D21720

Files:
  include/llvm/Analysis/LoopUnrollAnalyzer.h
  lib/Analysis/LoopUnrollAnalyzer.cpp
  lib/Transforms/Scalar/LoopUnrollPass.cpp
  test/Transforms/LoopUnroll/unroll-force.ll
  unittests/Analysis/UnrollAnalyzer.cpp

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