[Bug middle-end/17967] [4.0 Regression] Expand is considered slower? (or is it because gimplifier considered part of expand)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-13 04:02 -------
4.0.0:
Execution times (seconds)
 preprocessing         :   0.06 ( 0%) usr   0.12 (17%) sys   0.16 ( 1%) wall
 lexical analysis      :   0.12 ( 1%) usr   0.23 (32%) sys   0.47 ( 3%) wall
 parser                :   0.14 ( 1%) usr   0.15 (21%) sys   0.23 ( 1%) wall
 tree gimplify         :   0.04 ( 0%) usr   0.00 ( 0%) sys   0.04 ( 0%) wall
 tree eh               :   0.02 ( 0%) usr   0.00 ( 0%) sys   0.02 ( 0%) wall
 tree CFG construction :   0.04 ( 0%) usr   0.01 ( 1%) sys   0.06 ( 0%) wall
 tree CFG cleanup      :   0.09 ( 1%) usr   0.00 ( 0%) sys   0.10 ( 1%) wall
 tree PTA              :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall
 tree PHI insertion    :   0.00 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall
 tree SSA rewrite      :   0.02 ( 0%) usr   0.01 ( 1%) sys   0.03 ( 0%) wall
 tree SSA other        :   0.06 ( 0%) usr   0.07 (10%) sys   0.16 ( 1%) wall
 tree operand scan     :   0.04 ( 0%) usr   0.07 (10%) sys   0.10 ( 1%) wall
 dominator optimization:   0.08 ( 1%) usr   0.00 ( 0%) sys   0.08 ( 1%) wall
 tree conservative DCE :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall
 tree rename SSA copies:   0.01 ( 0%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 dominance frontiers   :   0.02 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall
 expand                :  13.82 (95%) usr   0.04 ( 6%) sys  14.35 (90%) wall
 global alloc          :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 symout                :   0.00 ( 0%) usr   0.00 ( 0%) sys   0.01 ( 0%) wall
 TOTAL                 :  14.60             0.71            15.95


3.3:

Execution times (seconds)
 cfg construction      :   0.09 ( 2%) usr   0.01 ( 2%) sys   0.00 ( 0%) wall
 cfg cleanup           :   3.47 (79%) usr   0.00 ( 0%) sys   2.00 (50%) wall
 trivially dead code   :   0.07 ( 2%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 preprocessing         :   0.04 ( 1%) usr   0.12 (22%) sys   0.00 ( 0%) wall
 lexical analysis      :   0.17 ( 4%) usr   0.19 (35%) sys   0.00 ( 0%) wall
 parser                :   0.08 ( 2%) usr   0.16 (29%) sys   0.00 ( 0%) wall
 expand                :   0.04 ( 1%) usr   0.01 ( 2%) sys   0.00 ( 0%) wall
 integration           :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 jump                  :   0.08 ( 2%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 CSE                   :   0.15 ( 3%) usr   0.03 ( 5%) sys   0.00 ( 0%) wall
 branch prediction     :   0.11 ( 3%) usr   0.01 ( 2%) sys   2.00 (50%) wall
 local alloc           :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 global alloc          :   0.00 ( 0%) usr   0.01 ( 2%) sys   0.00 ( 0%) wall
 flow 2                :   0.01 ( 0%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 rest of compilation   :   0.05 ( 1%) usr   0.00 ( 0%) sys   0.00 ( 0%) wall
 TOTAL                 :   4.39             0.55             4.00


remove_useless_stmts is counted in expand.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17967