------- Comment #18 from jv244 at cam dot ac dot uk 2010-08-29 15:07 ------- FYI, these are the 4.5 branch timings:
Execution times (seconds) garbage collection : 0.47 ( 1%) usr 0.00 ( 0%) sys 0.47 ( 1%) wall 0 kB ( 0%) ggc callgraph construction: 0.05 ( 0%) usr 0.01 ( 1%) sys 0.09 ( 0%) wall 5996 kB ( 1%) ggc callgraph optimization: 0.21 ( 0%) usr 0.02 ( 1%) sys 0.26 ( 0%) wall 606 kB ( 0%) ggc ipa cp : 0.09 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall 1381 kB ( 0%) ggc ipa reference : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.06 ( 0%) wall 0 kB ( 0%) ggc ipa pure const : 0.06 ( 0%) usr 0.01 ( 1%) sys 0.09 ( 0%) wall 0 kB ( 0%) ggc cfg cleanup : 0.39 ( 1%) usr 0.00 ( 0%) sys 0.51 ( 1%) wall 2459 kB ( 0%) ggc trivially dead code : 0.34 ( 1%) usr 0.00 ( 0%) sys 0.30 ( 1%) wall 0 kB ( 0%) ggc df multiple defs : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall 0 kB ( 0%) ggc df reaching defs : 0.33 ( 1%) usr 0.00 ( 0%) sys 0.27 ( 1%) wall 0 kB ( 0%) ggc df live regs : 2.08 ( 4%) usr 0.01 ( 1%) sys 2.19 ( 4%) wall 0 kB ( 0%) ggc df live&initialized regs: 0.98 ( 2%) usr 0.00 ( 0%) sys 0.92 ( 2%) wall 0 kB ( 0%) ggc df use-def / def-use chains: 0.24 ( 0%) usr 0.00 ( 0%) sys 0.19 ( 0%) wall 0 kB ( 0%) ggc df reg dead/unused notes: 0.93 ( 2%) usr 0.00 ( 0%) sys 1.04 ( 2%) wall 5756 kB ( 1%) ggc register information : 0.51 ( 1%) usr 0.01 ( 1%) sys 0.39 ( 1%) wall 0 kB ( 0%) ggc alias analysis : 0.78 ( 1%) usr 0.01 ( 1%) sys 0.91 ( 2%) wall 22384 kB ( 3%) ggc alias stmt walking : 0.50 ( 1%) usr 0.03 ( 2%) sys 0.38 ( 1%) wall 5563 kB ( 1%) ggc register scan : 0.13 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall 0 kB ( 0%) ggc rebuild jump labels : 0.19 ( 0%) usr 0.00 ( 0%) sys 0.19 ( 0%) wall 0 kB ( 0%) ggc parser : 0.82 ( 2%) usr 0.13 ( 9%) sys 0.94 ( 2%) wall 55603 kB ( 6%) ggc inline heuristics : 0.20 ( 0%) usr 0.01 ( 1%) sys 0.16 ( 0%) wall 0 kB ( 0%) ggc tree gimplify : 0.38 ( 1%) usr 0.03 ( 2%) sys 0.40 ( 1%) wall 46588 kB ( 5%) ggc tree eh : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 0 kB ( 0%) ggc tree CFG construction : 0.04 ( 0%) usr 0.02 ( 1%) sys 0.05 ( 0%) wall 11964 kB ( 1%) ggc tree CFG cleanup : 0.47 ( 1%) usr 0.00 ( 0%) sys 0.79 ( 1%) wall 1829 kB ( 0%) ggc tree VRP : 1.46 ( 3%) usr 0.05 ( 4%) sys 1.27 ( 2%) wall 56376 kB ( 6%) ggc tree copy propagation : 0.09 ( 0%) usr 0.02 ( 1%) sys 0.22 ( 0%) wall 746 kB ( 0%) ggc tree find ref. vars : 0.09 ( 0%) usr 0.01 ( 1%) sys 0.07 ( 0%) wall 3806 kB ( 0%) ggc tree PTA : 0.30 ( 1%) usr 0.00 ( 0%) sys 0.33 ( 1%) wall 3836 kB ( 0%) ggc tree PHI insertion : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall 3194 kB ( 0%) ggc tree SSA rewrite : 0.24 ( 0%) usr 0.01 ( 1%) sys 0.29 ( 1%) wall 13860 kB ( 2%) ggc tree SSA other : 0.13 ( 0%) usr 0.02 ( 1%) sys 0.11 ( 0%) wall 418 kB ( 0%) ggc tree SSA incremental : 0.89 ( 2%) usr 0.06 ( 4%) sys 0.97 ( 2%) wall 6811 kB ( 1%) ggc tree operand scan : 0.34 ( 1%) usr 0.23 (17%) sys 0.59 ( 1%) wall 44776 kB ( 5%) ggc dominator optimization: 0.29 ( 1%) usr 0.01 ( 1%) sys 0.35 ( 1%) wall 5152 kB ( 1%) ggc tree CCP : 0.51 ( 1%) usr 0.02 ( 1%) sys 0.43 ( 1%) wall 4620 kB ( 1%) ggc tree PHI const/copy prop: 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall 106 kB ( 0%) ggc tree split crit edges : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall 2019 kB ( 0%) ggc tree reassociation : 0.12 ( 0%) usr 0.01 ( 1%) sys 0.12 ( 0%) wall 2946 kB ( 0%) ggc tree PRE : 0.92 ( 2%) usr 0.00 ( 0%) sys 0.95 ( 2%) wall 7315 kB ( 1%) ggc tree FRE : 0.45 ( 1%) usr 0.04 ( 3%) sys 0.35 ( 1%) wall 5518 kB ( 1%) ggc tree code sinking : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall 1400 kB ( 0%) ggc tree linearize phis : 0.02 ( 0%) usr 0.01 ( 1%) sys 0.01 ( 0%) wall 0 kB ( 0%) ggc tree forward propagate: 0.18 ( 0%) usr 0.02 ( 1%) sys 0.16 ( 0%) wall 10006 kB ( 1%) ggc tree conservative DCE : 0.05 ( 0%) usr 0.01 ( 1%) sys 0.13 ( 0%) wall 576 kB ( 0%) ggc tree aggressive DCE : 0.28 ( 1%) usr 0.01 ( 1%) sys 0.37 ( 1%) wall 8853 kB ( 1%) ggc tree buildin call DCE : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall 0 kB ( 0%) ggc tree DSE : 0.20 ( 0%) usr 0.00 ( 0%) sys 0.11 ( 0%) wall 132 kB ( 0%) ggc PHI merge : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall 37 kB ( 0%) ggc tree loop bounds : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.18 ( 0%) wall 8266 kB ( 1%) ggc tree loop invariant motion: 0.06 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall 67 kB ( 0%) ggc tree canonical iv : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall 4779 kB ( 1%) ggc scev constant prop : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall 2345 kB ( 0%) ggc tree loop unswitching : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 573 kB ( 0%) ggc complete unrolling : 1.05 ( 2%) usr 0.11 ( 8%) sys 1.39 ( 3%) wall 98553 kB (11%) ggc tree vectorization : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall 883 kB ( 0%) ggc tree slp vectorization: 0.61 ( 1%) usr 0.00 ( 0%) sys 0.60 ( 1%) wall 53236 kB ( 6%) ggc tree iv optimization : 5.80 (11%) usr 0.06 ( 4%) sys 5.94 (11%) wall 95356 kB (11%) ggc predictive commoning : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall 1054 kB ( 0%) ggc tree loop init : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 1339 kB ( 0%) ggc tree copy headers : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall 1613 kB ( 0%) ggc tree SSA uncprop : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall 0 kB ( 0%) ggc tree rename SSA copies: 0.06 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall 0 kB ( 0%) ggc dominance frontiers : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall 0 kB ( 0%) ggc dominance computation : 0.23 ( 0%) usr 0.00 ( 0%) sys 0.26 ( 0%) wall 0 kB ( 0%) ggc expand : 3.24 ( 6%) usr 0.07 ( 5%) sys 3.34 ( 6%) wall 69633 kB ( 8%) ggc lower subreg : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall 0 kB ( 0%) ggc forward prop : 0.48 ( 1%) usr 0.01 ( 1%) sys 0.48 ( 1%) wall 9984 kB ( 1%) ggc CSE : 0.73 ( 1%) usr 0.00 ( 0%) sys 0.92 ( 2%) wall 248 kB ( 0%) ggc dead code elimination : 0.24 ( 0%) usr 0.00 ( 0%) sys 0.28 ( 1%) wall 0 kB ( 0%) ggc dead store elim1 : 0.33 ( 1%) usr 0.01 ( 1%) sys 0.32 ( 1%) wall 5987 kB ( 1%) ggc dead store elim2 : 0.44 ( 1%) usr 0.02 ( 1%) sys 0.39 ( 1%) wall 7831 kB ( 1%) ggc loop analysis : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 718 kB ( 0%) ggc loop invariant motion : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall 305 kB ( 0%) ggc loop unswitching : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 0 kB ( 0%) ggc loop unrolling : 0.65 ( 1%) usr 0.00 ( 0%) sys 0.62 ( 1%) wall 32780 kB ( 4%) ggc CPROP : 0.70 ( 1%) usr 0.00 ( 0%) sys 0.60 ( 1%) wall 7825 kB ( 1%) ggc PRE : 0.32 ( 1%) usr 0.00 ( 0%) sys 0.33 ( 1%) wall 719 kB ( 0%) ggc web : 0.13 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall 594 kB ( 0%) ggc CSE 2 : 0.75 ( 1%) usr 0.01 ( 1%) sys 0.60 ( 1%) wall 470 kB ( 0%) ggc branch prediction : 0.19 ( 0%) usr 0.01 ( 1%) sys 0.14 ( 0%) wall 7344 kB ( 1%) ggc combiner : 1.19 ( 2%) usr 0.01 ( 1%) sys 1.33 ( 2%) wall 19980 kB ( 2%) ggc if-conversion : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall 746 kB ( 0%) ggc regmove : 0.37 ( 1%) usr 0.01 ( 1%) sys 0.33 ( 1%) wall 0 kB ( 0%) ggc integrated RA : 3.51 ( 7%) usr 0.01 ( 1%) sys 3.74 ( 7%) wall 12746 kB ( 1%) ggc reload : 2.16 ( 4%) usr 0.02 ( 1%) sys 2.01 ( 4%) wall 7755 kB ( 1%) ggc reload CSE regs : 1.38 ( 3%) usr 0.00 ( 0%) sys 1.26 ( 2%) wall 12331 kB ( 1%) ggc load CSE after reload : 0.18 ( 0%) usr 0.00 ( 0%) sys 0.14 ( 0%) wall 162 kB ( 0%) ggc thread pro- & epilogue: 0.11 ( 0%) usr 0.00 ( 0%) sys 0.12 ( 0%) wall 4370 kB ( 0%) ggc if-conversion 2 : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 357 kB ( 0%) ggc combine stack adjustments: 0.03 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall 0 kB ( 0%) ggc peephole 2 : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.16 ( 0%) wall 1899 kB ( 0%) ggc rename registers : 0.46 ( 1%) usr 0.00 ( 0%) sys 0.55 ( 1%) wall 2237 kB ( 0%) ggc hard reg cprop : 0.37 ( 1%) usr 0.00 ( 0%) sys 0.48 ( 1%) wall 13 kB ( 0%) ggc scheduling 2 : 3.30 ( 6%) usr 0.04 ( 3%) sys 3.10 ( 6%) wall 1216 kB ( 0%) ggc machine dep reorg : 0.38 ( 1%) usr 0.00 ( 0%) sys 0.36 ( 1%) wall 11 kB ( 0%) ggc reorder blocks : 0.15 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall 1283 kB ( 0%) ggc final : 0.93 ( 2%) usr 0.07 ( 5%) sys 0.84 ( 2%) wall 6610 kB ( 1%) ggc symout : 0.30 ( 1%) usr 0.03 ( 2%) sys 0.34 ( 1%) wall 27006 kB ( 3%) ggc variable tracking : 3.86 ( 7%) usr 0.03 ( 2%) sys 3.99 ( 7%) wall 39804 kB ( 4%) ggc plugin execution : 0.00 ( 0%) usr 0.01 ( 1%) sys 0.05 ( 0%) wall 0 kB ( 0%) ggc rest of compilation : 0.00 ( 0%) usr 0.01 ( 1%) sys 0.00 ( 0%) wall 0 kB ( 0%) ggc TOTAL : 52.50 1.37 53.88 893901 kB -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45422