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The following arranges vector reduction costs to hand down the SLP node (of the reduction stmt) to the cost hooks, not only the stmt_info. This also avoids accessing STMT_VINFO_VECTYPE of an unrelated stmt to the node that is subject to code generation. * tree-vect-loop.cc (vect_model_reduction_cost): Get SLP node instead of stmt_info and use that when recording costs.
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