[PATCH] D28959: [SLP] Improve horizontal vectorization for non-power-of-2 number of instructions.

Alexey Bataev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jan 20 10:34:49 PST 2017

ABataev created this revision.

If the number of instructions in horizontal reduction list is not the power of 2 then only PowerOf2Floor(NumberOfInstructions) last elements are actually vectorized, other instructions remain scalar. Patch tries to vectorize the remaining elements either.



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