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[Bug middle-end/17520] [regression] Huge compile time for C code
- From: "arend dot bayer at web dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Sep 2004 14:36:30 -0000
- Subject: [Bug middle-end/17520] [regression] Huge compile time for C code
- References: <20040916142728.17520.arend.bayer@web.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From arend dot bayer at web dot de 2004-09-16 14:36 -------
And here is the top of a profile for this run (captured with oprofile):
21079 23.0737 cc1 follow_ssa_edge
13348 14.6111 cc1 htab_find_slot_with_hash
5522 6.0446 cc1 loop_phi_node_p
3790 4.1487 cc1 flow_bb_inside_loop_p
3499 3.8301 cc1 analyze_scalar_evolution_1
3049 3.3375 cc1 follow_ssa_edge_in_rhs
2869 3.1405 cc1 find_var_scev_info
2549 2.7902 cc1 htab_find_slot
2492 2.7278 cc1 analyze_scalar_evolution
2200 2.4082 cc1 flow_loop_nested_p
2053 2.2473 cc1 eq_scev_info
1984 2.1717 cc1 chrec_merge
1704 1.8653 cc1 hash_scev_info
1477 1.6168 cc1 backedge_phi_arg_p
1050 1.1494 cc1 make_node_stat
791 0.8659 cc1 operand_equal_p
707 0.7739 cc1 build3_stat
627 0.6863 cc1 ggc_alloc_stat
481 0.5265 cc1 add_to_evolution
431 0.4718 cc1 add_to_evolution_1
407 0.4455 cc1 chrec_type
366 0.4006 cc1 chrec_convert
307 0.3361 cc1 build_int_cst_wide
161 0.1762 cc1 tree_code_size
98 0.1073 cc1 build_int_cst
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17520