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When computing the smallest and largest types for selecting the maximum vectorization factor, we currently ignore loads and stores of pointer types if the memory access is non-consecutive. We do this because such accesses must be scalarized regardless of vectorization factor, and thus shouldn't be considered when determining the factor. This patch makes this check less aggressive by also considering non-consecutive accesses that may be vectorized, such as interleaved accesses. Because we don't know at the time of the check if an accesses will certainly be vectorized (this is a cost model decision given a particular VF), we consider all accesses that can potentially be vectorized. Differential Revision: https://reviews.llvm.org/D30305 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296747 91177308-0d34-0410-b5e6-96231b3b80d8
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