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* df-scan.c (df_insn_rescan): Salvage insn's LUID if the insn is not new but only being rescanned. * gcse.c (uid_cuid, max_uid, INSN_CUID, max_cuid, struct reg_set, reg_set_table, REG_SET_TABLE_SLOP, reg_set_in_block, alloc_reg_set_mem, free_reg_set_mem, record_one_set, record_set_info, compute_set, grealloc): Remove. (recompute_all_luids): New function. (gcse_main): Don't compute sets, and don't do related memory allocations/free-ing. If something changed before the end of the pass, update LUIDs using recompute_all_luids. (alloc_gcse_mem): Don't compute LUIDs. Don't allocate reg_set memory. (free_gcse_mem): Don't free it either. (oprs_unchanged_p, load_killed_in_block, record_last_reg_set_info): Use the df insn LUIDs. (load_killed_in_block): Likewise. (compute_hash_table_work): Don't compute reg_set_in_block. (compute_transp): Use DF_REG_DEF_CHAINs. (local_cprop_pass): Don't use compute_sets and related functions. (one_cprop_pass, pre_gcse, one_pre_gcse_pass, one_code_hoisting_pass): Use get_max_uid() instead of max_cuid. (insert_insn_end_basic_block, pre_insert_copy_insn, update_ld_motion_stores): Don't try to keep reg_set tables up to date. (pre_insert_copies): Use df insn LUIDs. (sbitmap pre_redundant_insns): Replace with uses of INSN_DELETED_P. (reg_set_info): Don't use extra bitmap argument. (compute_store_table): Don't compute reg_set_in_block. Use DF scan information to compute regs_set_in_block. (free_store_memory, store_motion): Don't nullify reg_set_in_block. (bypass_jumps): Don't use compute_sets and friends. From-SVN: r146799
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