[PATCH] Don't try to emit loopVectorize warning if DebugLoc isn't available

[Davide Italiano]

http://reviews.llvm.org/D9499 landed and fixed the problem. After discussion with dexonsmith on IRC we agreed it's better to emit the remark all the time, hence this review can be abandoned.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9463

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