Hi all I compiled my code with g++ in the verbose mode and got the following Execution time split
Execution times (seconds) garbage collection : 0.77 ( 0%) usr 0.00 ( 0%) sys 0.77 ( 0%) wall cfg construction : 0.34 ( 0%) usr 0.01 ( 0%) sys 0.37 ( 0%) wall cfg cleanup : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall trivially dead code : 0.41 ( 0%) usr 0.02 ( 0%) sys 0.43 ( 0%) wall life analysis : 1.23 ( 0%) usr 0.01 ( 0%) sys 1.22 ( 0%) wall life info update : 0.17 ( 0%) usr 0.00 ( 0%) sys 0.17 ( 0%) wall alias analysis : 0.51 ( 0%) usr 0.01 ( 0%) sys 0.53 ( 0%) wall register scan : 0.40 ( 0%) usr 0.01 ( 0%) sys 0.42 ( 0%) wall rebuild jump labels : 0.13 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall preprocessing : 0.43 ( 0%) usr 0.18 ( 4%) sys 0.78 ( 0%) wall parser : 4.73 ( 1%) usr 1.03 (23%) sys 58.17 ( 9%) wall name lookup : 0.90 ( 0%) usr 0.87 (20%) sys 1.53 ( 0%) wall expand : 3.07 ( 1%) usr 0.33 ( 8%) sys 3.39 ( 1%) wall varconst : 0.01 ( 0%) usr 0.01 ( 0%) sys 0.03 ( 0%) wall integration : 5.76 ( 1%) usr 0.44 (10%) sys 6.19 ( 1%) wall jump : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall CSE : 75.38 (13%) usr 0.05 ( 1%) sys 75.43 (11%) wall loop analysis : 0.37 ( 0%) usr 0.00 ( 0%) sys 0.38 ( 0%) wall branch prediction : 0.49 ( 0%) usr 0.03 ( 1%) sys 0.52 ( 0%) wall flow analysis : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall combiner : 466.97 (78%) usr 0.04 ( 1%) sys 467.08 (70%) wall local alloc : 25.46 ( 4%) usr 0.05 ( 1%) sys 25.53 ( 4%) wall global alloc : 3.52 ( 1%) usr 1.28 (29%) sys 22.22 ( 3%) wall reload CSE regs : 2.22 ( 0%) usr 0.01 ( 0%) sys 2.24 ( 0%) wall flow 2 : 0.14 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall rename registers : 0.19 ( 0%) usr 0.00 ( 0%) sys 0.19 ( 0%) wall machine dep reorg : 0.16 ( 0%) usr 0.00 ( 0%) sys 0.16 ( 0%) wall shorten branches : 0.17 ( 0%) usr 0.00 ( 0%) sys 0.18 ( 0%) wall final : 0.22 ( 0%) usr 0.01 ( 0%) sys 0.23 ( 0%) wall rest of compilation : 3.31 ( 1%) usr 0.00 ( 0%) sys 3.29 ( 0%) wall TOTAL : 597.73 4.40 672.00 The stage combiner seems to take a lot of compile time.. What exactly happens in 'combining' and can I do something to reduce it? Akanksha _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
