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With the support to SLP only we now pass the VMAT through the SLP node, however the majority of the costing calls inside vectorizable_load and vectorizable_store do no pass the SLP node along. Due to this the backend costing never sees the VMAT for these cases anymore. Additionally the helper around record_stmt_cost when both SLP and stmt_vinfo are passed would only pass the SLP node along. However the SLP node doesn't contain all the info available in the stmt_vinfo and we'd have to go through the SLP_TREE_REPRESENTATIVE anyway. As such I changed the function to just Always pass both along. Unlike the VMAT changes, I don't believe there to be a correctness issue here but would minimize the number of churn in the backend costing until vectorizer costing as a whole is revisited in GCC 16. These changes re-enable the cost model on AArch64 and also correctly find the VMATs on loads and stores fixing testcases such as sve_iters_low_2.c. gcc/ChangeLog: * tree-vect-data-refs.cc (vect_get_data_access_cost): Pass NULL for SLP node. * tree-vect-stmts.cc (record_stmt_cost): Expose. (vect_get_store_cost, vect_get_load_cost): Extend with SLP node. (vectorizable_store, vectorizable_load): Pass SLP node to all costing. * tree-vectorizer.h (record_stmt_cost): Always pass both SLP node and stmt_vinfo to costing. (vect_get_load_cost, vect_get_store_cost): Extend with SLP node. |
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