[PATCH] D38825: [SCEV] Teach SCEV to find maxBECount when loop endbound is variant

[Anna Thomas via Phabricator via llvm-commits]

anna updated this revision to Diff 118780.
anna marked 3 inline comments as done.
anna added a comment.

Addressed reviewer comments: added more tests regarding overflow, stride negative, stride unknown.
Updated a failing test where we now have more granular max BECount taken 
value (This test update was missed in the original diff).


https://reviews.llvm.org/D38825

Files:
  include/llvm/Analysis/ScalarEvolution.h
  lib/Analysis/ScalarEvolution.cpp
  test/Analysis/ScalarEvolution/max-trip-count.ll
  test/Transforms/LoopSimplify/preserve-scev.ll

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