[PATCH] D33316: [SCEV] Do not fold expressions with SCEVUnknown Phis into AddRecExpr's

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev updated this revision to Diff 99537.
mkazantsev marked 4 inline comments as done.
mkazantsev added a comment.

Addressed the comments, and also made the analysis more accurate. We only react on SCEVUnknown if there is another loop between it and our loop, and this loop header has Phis.


https://reviews.llvm.org/D33316

Files:
  lib/Analysis/ScalarEvolution.cpp
  test/Analysis/ScalarEvolution/different-loops-recs.ll

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