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0afd0bc5fa
LoopVectorize pass. The logic here doesn't make much sense. We *only* unrolled if the unvectorized loop was a reduction loop with a single basic block *and* small loop body. The reduction part in particular doesn't make much sense. Instead, if we just fall through to the vectorized unroll logic it makes more sense of unrolling if there is a vectorized reduction that could be hacked on by the SLP vectorizer *or* if the loop is small. This is mostly a cleanup and nothing in the test suite really exercises this, but I did run benchmarks across this change and saw no really significant changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200198 91177308-0d34-0410-b5e6-96231b3b80d8
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