Alexey Bataev f2301be0e8 [SLP]Add a check if the user itself is commutable
If the commutable instruction can be represented as a non-commutable
vector instruction (like add 0, %v can be represented as a part of sub
nodes with operation sub %v, 0), its operands might still be reordered
and this should be accounted when checking for copyables in operands

Fixes #158293
2025-09-15 12:50:03 -07:00
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