------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-04 
17:54 -------
 tree remove redundant PHIs:   0.34 ( 2%) usr   0.02 ( 0%) sys   0.34 ( 1%) wall
 tree SSA rewrite      :   0.42 ( 3%) usr   0.06 ( 1%) sys   0.62 ( 3%) wall
 tree SSA other        :   0.88 ( 6%) usr   0.61 ( 9%) sys   1.39 ( 6%) wall
 tree operand scan     :   0.45 ( 3%) usr   0.64 (10%) sys   1.51 ( 6%) wall
 dominator optimization:   0.86 ( 6%) usr   0.05 ( 1%) sys   0.83 ( 3%) wall
 tree alias analysis   :   0.19 ( 1%) usr   0.01 ( 0%) sys   0.25 ( 1%) wall
 tree PHI insertion    :   0.23 ( 2%) usr   0.02 ( 0%) sys   0.24 ( 1%) wall

 expand                :   0.72 ( 5%) usr   0.08 ( 1%) sys   0.91 ( 4%) wall
I wounder how expand is this slow, it might be just again counting more than 
just expand here (again).

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17278

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