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The two users of tree-data-ref's runtime alias checks both canonicalise the order of the dr_with_seg_lens in a pair before passing them to prune_runtime_alias_test_list. It's more convenient for later patches if prune_runtime_alias_test_list does that itself. 2019-11-16 Richard Sandiford <richard.sandiford@arm.com> gcc/ * tree-data-ref.c (prune_runtime_alias_test_list): Sort the two accesses in each dr_with_seg_len_pair_t before trying to combine separate dr_with_seg_len_pair_ts. * tree-loop-distribution.c (compute_alias_check_pairs): Don't do that here. * tree-vect-data-refs.c (vect_prune_runtime_alias_test_list): Likewise. From-SVN: r278348
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