------- Comment #60 from hubicka at gcc dot gnu dot org 2007-02-06 22:05 ------- Hi, small update on status. At -O3 -fno-tree-fre -fno-tree-pre we are now doing 1.1GB footprint, 800MB of this out of gimple. We still explode in FRE/PRE but majority of other problems was fixed: Execution times (seconds) garbage collection : 18.23 (12%) usr 0.04 ( 1%) sys 18.46 (10%) wall 0 kB ( 0%) ggc callgraph construction: 10.31 ( 7%) usr 0.04 ( 1%) sys 10.36 ( 5%) wall 2296 kB ( 0%) ggc life analysis : 4.08 ( 3%) usr 0.16 ( 3%) sys 4.26 ( 2%) wall 7350 kB ( 2%) ggc inline heuristics : 10.46 ( 7%) usr 0.12 ( 2%) sys 10.57 ( 6%) wall 2438 kB ( 1%) ggc integration : 16.48 (11%) usr 0.46 ( 9%) sys 17.00 ( 9%) wall 143049 kB (29%) ggc tree CFG cleanup : 4.69 ( 3%) usr 0.00 ( 0%) sys 4.69 ( 2%) wall 0 kB ( 0%) ggc tree SSA incremental : 2.32 ( 2%) usr 0.40 ( 8%) sys 2.76 ( 1%) wall 3276 kB ( 1%) ggc tree operand scan : 1.42 ( 1%) usr 0.22 ( 4%) sys 1.54 ( 1%) wall 27071 kB ( 6%) ggc dominator optimization: 2.25 ( 2%) usr 0.00 ( 0%) sys 2.24 ( 1%) wall 14657 kB ( 3%) ggc tree split crit edges : 0.39 ( 0%) usr 0.00 ( 0%) sys 0.39 ( 0%) wall 17558 kB ( 4%) ggc tree SSA to normal : 8.06 ( 5%) usr 0.40 ( 8%) sys 8.51 ( 4%) wall 22874 kB ( 5%) ggc expand : 3.83 ( 3%) usr 0.69 (14%) sys 38.08 (20%) wall 54312 kB (11%) ggc forward prop : 3.20 ( 2%) usr 0.82 (16%) sys 4.22 ( 2%) wall 2470 kB ( 1%) ggc if-conversion : 6.37 ( 4%) usr 0.00 ( 0%) sys 6.41 ( 3%) wall 9157 kB ( 2%) ggc global alloc : 12.12 ( 8%) usr 0.94 (19%) sys 15.48 ( 8%) wall 18801 kB ( 4%) ggc TOTAL : 147.90 5.02 191.03 486834 kB
We get considerable usage in bitmaps (just those over 100MB of peak memory usage are listed): df-problems.c:2957 (df_chain_create_bb) 208MB df-problems.c:986 (df_rd_alloc) 207MB df-problems.c:987 (df_rd_alloc) 110MB tree-ssa-live.c:534 (new_tree_live_info) 110MB tree-ssa-live.c:538 (new_tree_live_info) 110MB At least 100MB, but probably more is consumed by the new linked lists used by scheduler. Hopefully this can be tracked by moving everyting to allocpools. I will send -O2 in separate post. Honza -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28071
