------- Additional Comments From rguenth at gcc dot gnu dot org 2005-09-19 08:46 ------- 4.0 leafify timings, this time on the same machine (sigh!) as the 4.1 numbers:
Execution times (seconds) garbage collection : 4.56 ( 4%) usr 0.08 ( 1%) sys 4.66 ( 3%) wall callgraph construction: 0.28 ( 0%) usr 0.01 ( 0%) sys 0.28 ( 0%) wall callgraph optimization: 0.66 ( 1%) usr 0.03 ( 1%) sys 0.69 ( 1%) wall cfg construction : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall cfg cleanup : 0.90 ( 1%) usr 0.00 ( 0%) sys 0.99 ( 1%) wall trivially dead code : 0.49 ( 0%) usr 0.00 ( 0%) sys 0.44 ( 0%) wall life analysis : 2.15 ( 2%) usr 0.00 ( 0%) sys 2.15 ( 2%) wall life info update : 0.18 ( 0%) usr 0.00 ( 0%) sys 0.15 ( 0%) wall alias analysis : 0.71 ( 1%) usr 0.02 ( 0%) sys 0.85 ( 1%) wall register scan : 0.42 ( 0%) usr 0.00 ( 0%) sys 0.46 ( 0%) wall rebuild jump labels : 0.10 ( 0%) usr 0.00 ( 0%) sys 0.17 ( 0%) wall preprocessing : 0.50 ( 0%) usr 0.45 ( 8%) sys 1.10 ( 1%) wall parser : 4.83 ( 4%) usr 0.95 (18%) sys 5.55 ( 4%) wall name lookup : 1.67 ( 1%) usr 0.92 (17%) sys 2.82 ( 2%) wall integration : 46.10 (36%) usr 0.08 ( 1%) sys 46.12 (34%) wall tree gimplify : 0.64 ( 0%) usr 0.01 ( 0%) sys 0.64 ( 0%) wall tree eh : 0.28 ( 0%) usr 0.00 ( 0%) sys 0.24 ( 0%) wall tree CFG construction : 0.76 ( 1%) usr 0.00 ( 0%) sys 0.73 ( 1%) wall tree CFG cleanup : 0.97 ( 1%) usr 0.02 ( 0%) sys 0.93 ( 1%) wall tree find referenced vars: 0.94 ( 1%) usr 0.01 ( 0%) sys 0.90 ( 1%) wall tree PTA : 1.66 ( 1%) usr 0.00 ( 0%) sys 1.96 ( 1%) wall tree alias analysis : 6.80 ( 5%) usr 0.02 ( 0%) sys 6.64 ( 5%) wall tree PHI insertion : 1.77 ( 1%) usr 0.00 ( 0%) sys 1.68 ( 1%) wall tree SSA rewrite : 2.32 ( 2%) usr 0.00 ( 0%) sys 2.46 ( 2%) wall tree SSA other : 3.73 ( 3%) usr 0.85 (16%) sys 4.46 ( 3%) wall tree operand scan : 2.73 ( 2%) usr 1.35 (25%) sys 4.03 ( 3%) wall dominator optimization: 6.37 ( 5%) usr 0.23 ( 4%) sys 6.58 ( 5%) wall tree SRA : 0.31 ( 0%) usr 0.00 ( 0%) sys 0.36 ( 0%) wall tree CCP : 0.27 ( 0%) usr 0.01 ( 0%) sys 0.32 ( 0%) wall tree split crit edges : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.12 ( 0%) wall tree PRE : 1.42 ( 1%) usr 0.03 ( 1%) sys 2.01 ( 1%) wall tree remove redundant PHIs: 1.00 ( 1%) usr 0.01 ( 0%) sys 1.05 ( 1%) wall tree linearize phis : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall tree forward propagate: 0.31 ( 0%) usr 0.00 ( 0%) sys 0.36 ( 0%) wall tree conservative DCE : 1.02 ( 1%) usr 0.00 ( 0%) sys 1.23 ( 1%) wall tree aggressive DCE : 0.32 ( 0%) usr 0.00 ( 0%) sys 0.29 ( 0%) wall tree DSE : 0.40 ( 0%) usr 0.00 ( 0%) sys 0.46 ( 0%) wall PHI merge : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall tree record loop bounds: 0.27 ( 0%) usr 0.00 ( 0%) sys 0.33 ( 0%) wall loop invariant motion : 0.60 ( 0%) usr 0.00 ( 0%) sys 0.56 ( 0%) wall tree canonical iv creation: 0.22 ( 0%) usr 0.00 ( 0%) sys 0.23 ( 0%) wall complete unrolling : 0.65 ( 1%) usr 0.02 ( 0%) sys 0.50 ( 0%) wall tree iv optimization : 1.38 ( 1%) usr 0.04 ( 1%) sys 1.50 ( 1%) wall tree loop init : 0.54 ( 0%) usr 0.00 ( 0%) sys 0.54 ( 0%) wall tree loop fini : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall tree copy headers : 0.67 ( 1%) usr 0.03 ( 1%) sys 0.58 ( 0%) wall tree SSA to normal : 1.03 ( 1%) usr 0.01 ( 0%) sys 0.98 ( 1%) wall tree rename SSA copies: 0.39 ( 0%) usr 0.00 ( 0%) sys 0.37 ( 0%) wall dominance frontiers : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall control dependences : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.06 ( 0%) wall expand : 5.19 ( 4%) usr 0.05 ( 1%) sys 5.27 ( 4%) wall varconst : 0.23 ( 0%) usr 0.01 ( 0%) sys 0.26 ( 0%) wall jump : 0.15 ( 0%) usr 0.00 ( 0%) sys 0.10 ( 0%) wall CSE : 3.71 ( 3%) usr 0.01 ( 0%) sys 3.82 ( 3%) wall loop analysis : 0.60 ( 0%) usr 0.00 ( 0%) sys 0.69 ( 1%) wall global CSE : 0.11 ( 0%) usr 0.01 ( 0%) sys 0.07 ( 0%) wall CPROP 1 : 0.31 ( 0%) usr 0.00 ( 0%) sys 0.29 ( 0%) wall PRE : 0.85 ( 1%) usr 0.00 ( 0%) sys 0.75 ( 1%) wall CPROP 2 : 0.32 ( 0%) usr 0.00 ( 0%) sys 0.36 ( 0%) wall bypass jumps : 0.31 ( 0%) usr 0.01 ( 0%) sys 0.31 ( 0%) wall CSE 2 : 1.97 ( 2%) usr 0.00 ( 0%) sys 2.07 ( 2%) wall branch prediction : 0.83 ( 1%) usr 0.01 ( 0%) sys 0.77 ( 1%) wall flow analysis : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall combiner : 1.96 ( 2%) usr 0.00 ( 0%) sys 2.02 ( 1%) wall if-conversion : 0.29 ( 0%) usr 0.00 ( 0%) sys 0.20 ( 0%) wall regmove : 0.27 ( 0%) usr 0.00 ( 0%) sys 0.37 ( 0%) wall local alloc : 1.23 ( 1%) usr 0.02 ( 0%) sys 1.07 ( 1%) wall global alloc : 3.28 ( 3%) usr 0.00 ( 0%) sys 3.19 ( 2%) wall reload CSE regs : 1.60 ( 1%) usr 0.00 ( 0%) sys 1.64 ( 1%) wall flow 2 : 0.16 ( 0%) usr 0.01 ( 0%) sys 0.20 ( 0%) wall if-conversion 2 : 0.06 ( 0%) usr 0.01 ( 0%) sys 0.14 ( 0%) wall peephole 2 : 0.16 ( 0%) usr 0.00 ( 0%) sys 0.11 ( 0%) wall rename registers : 0.44 ( 0%) usr 0.00 ( 0%) sys 0.34 ( 0%) wall machine dep reorg : 0.32 ( 0%) usr 0.00 ( 0%) sys 0.41 ( 0%) wall reorder blocks : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.31 ( 0%) wall shorten branches : 0.35 ( 0%) usr 0.01 ( 0%) sys 0.35 ( 0%) wall reg stack : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall final : 0.49 ( 0%) usr 0.01 ( 0%) sys 0.50 ( 0%) wall rest of compilation : 0.32 ( 0%) usr 0.02 ( 0%) sys 0.40 ( 0%) wall TOTAL : 129.54 5.37 135.98 Peak memory usage is 468694 kB (4.0.2 20050919) vs. 532350 kB (4.1.0 20050916). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23955
