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* tree-loop-distribution.c (struct builtin_info): New struct. (struct partition): Refactor fields into struct builtin_info. (partition_free): Free struct builtin_info. (build_size_arg_loc, build_addr_arg_loc): Delete. (generate_memset_builtin, generate_memcpy_builtin): Get memory range information from struct builtin_info. (find_single_drs): New function refactored from classify_partition. Also moved builtin validity checks to this function. (compute_access_range, alloc_builtin): New functions. (classify_builtin_st, classify_builtin_ldst): New functions. (classify_partition): Refactor code into functions find_single_drs, classify_builtin_st and classify_builtin_ldst. (distribute_loop): Don't do runtime alias check when distributing loop nest. (find_seed_stmts_for_distribution): New function. (pass_loop_distribution::execute): Refactor code finding seed stmts into above function. Support distribution for the innermost two-level loop nest. Adjust dump information. gcc/testsuite * gcc.dg/tree-ssa/ldist-28.c: New test. * gcc.dg/tree-ssa/ldist-29.c: New test. * gcc.dg/tree-ssa/ldist-30.c: New test. * gcc.dg/tree-ssa/ldist-31.c: New test. From-SVN: r253680
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