[PATCH] D48258: [LoopSimplifyCFG] Preserve Scalar Evolution in LoopSimplifyCFG

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: asbirlea, chandlerc, dberris, escha, spatel.

LoopSimplifyCFG, being a loop pass, needs to preserve scalar
evolution. This invalidates SE for the loops altered during
block merging.

Needs https://reviews.llvm.org/D48202 for the test to cause
a validation failure.


https://reviews.llvm.org/D48258

Files:
  lib/Transforms/Scalar/LoopSimplifyCFG.cpp
  test/Transforms/LoopSimplifyCFG/scev.ll

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