[LoopSimplifyCFG] Invalidate SCEV in LoopSimplifyCFG

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

Differential Revision: https://reviews.llvm.org/D48258



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335036 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed