[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375

--- Comment #139 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-08-18 09:36:55 UTC ---
oprofile of WPA:
649295   18.2243  lto1                     lto1                     lto_main()
341256    9.5783  lto1                     lto1                    
htab_find_slot_with_hash
126567    3.5525  lto1                     lto1                    
do_estimate_growth_1(cgraph_node*, void*)
97142     2.7266  lto1                     lto1                     htab_expand
89658     2.5165  libc-2.11.1.so           libc-2.11.1.so           _int_malloc
82117     2.3048  lto1                     lto1                    
pointer_map_insert(pointer_map_t*, void const*)
60238     1.6907  lto1                     lto1                    
iterative_hash_hashval_t(unsigned int, unsigned int)
58145     1.6320  lto1                     lto1                    
ggc_internal_alloc_stat(unsigned long, char const*, int, char const*)
53679     1.5067  lto1                     lto1                    
linemap_lookup(line_maps*, unsigned int)
47271     1.3268  lto1                     lto1                    
lto_output_tree(output_block*, tree_node*, bool, bool)
43043     1.2081  lto1                     lto1                    
gt_ggc_mx_lang_tree_node(void*)
42675     1.1978  lto1                     lto1                    
verify_cgraph_node(cgraph_node*)
40609     1.1398  lto1                     lto1                    
streamer_tree_cache_insert_1(streamer_tree_cache_d*, tree_node*, unsigned int*,
bool)
40245     1.1296  lto1                     lto1                    
ggc_marked_p(void const*)
39474     1.1079  libc-2.11.1.so           libc-2.11.1.so           memset
38955     1.0934  libc-2.11.1.so           libc-2.11.1.so          
malloc_consolidate
32085     0.9006  lto1                     lto1                    
streamer_write_uhwi_stream(lto_output_stream*, unsigned long)
31965     0.8972  lto1                     lto1                    
ggc_set_mark(void const*)
31406     0.8815  lto1                     lto1                    
lto_input_tree(lto_input_block*, data_in*)
29213     0.8199  lto1                     lto1                    
streamer_read_tree_bitfields(lto_input_block*, tree_node*)
26846     0.7535  lto1                     lto1                    
hash_pointer
25870     0.7261  libc-2.11.1.so           libc-2.11.1.so           memcpy


We still spend insanely long time in walking types in lto_main (introduced by
Michael's patch)