re PR tree-optimization/18181 (vectorizer: problem in the peeling mechanism in…
re PR tree-optimization/18181 (vectorizer: problem in the peeling mechanism in the presence of loop invariants that are used after the loop) PR tree-opt/18181 * tree-vectorizer.c (slpeel_tree_peel_loop_to_edge): Peeling scheme changed to suppoer uses-after-loop and to void creating flow paths that shouldn't exist. (slpeel_update_phi_nodes_for_guard): Takes additional two arguments. Modified to fit the new peeling scheme. Avoid quadratic behavior. (slpeel_add_loop_guard): Takes additional argument. (slpeel_verify_cfg_after_peeling): New function. (vect_update_ivs_after_vectorizer): Takes additional argument. Updated documentation. Use 'exit-bb' instead of creating 'new-bb'. (rename_variables_in_bb): Don't update phis for BBs out of loop, to fit the new peeling scheme. (copy_phi_nodes): Function removed. Its functionality moved to update_phis_for_duplicate_loop. (slpeel_update_phis_for_duplicate_loop): Functionality of copy_phi_nodes moved here. Added documentation. Modified to fit the new peeling scheme. (slpeel_make_loop_iterate_ntimes): Setting loop->single_exit not not needed - done in slpeel_tree_peel_loop_to_edge. (slpeel_tree_duplicate_loop_to_edge_cfg): Debug printouts compacted. (vect_do_peeling_for_loop_bound): Add documentation. Call slpeel_verify_cfg_after_peeling. Call vect_update_ivs_after_vectorizer with additional argument. (vect_do_peeling_for_alignment): Call slpeel_verify_cfg_after_peeling. (vect_finish_stmt_generation): Avoid 80 column oveflow. From-SVN: r90932
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gcc/testsuite/gcc.dg/vect/vect-85.c
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gcc/testsuite/gcc.dg/vect/vect-86.c
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gcc/testsuite/gcc.dg/vect/vect-87.c
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gcc/testsuite/gcc.dg/vect/vect-88.c
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