[Tcwg-commits] [llvm] branch master updated (971993b371e -> 72a0048d96b)

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from 971993b371e [DAGCombiner] Fix a case of 1 in non-splat vector pow2 divisor new 72a0048d96b [LoopGuardWidening] Make PostDomTree optional

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Summary of changes: lib/Transforms/Scalar/GuardWidening.cpp | 38 +++++++++++++++++++------- test/Transforms/GuardWidening/loop-schedule.ll | 33 ++++++++++++++++++---- 2 files changed, 56 insertions(+), 15 deletions(-)