Valery N Dmitriev fd7273359a [SLP] Do not ignore ordering for root node when it has in-tree uses.
When rooted with PHIs, a vectorization tree may have another node with PHIs
which have roots as their operands. We cannot ignore ordering information
for root in such a case.

Differential Revision: https://reviews.llvm.org/D141309
2023-01-10 10:12:51 -08:00
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