[Bug-kawa] [bug #16388] performance regression

[tk]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=16388>

                 Summary: performance regression 
                 Project: Kawa
            Submitted by: huh
            Submitted on: Wednesday 04/19/06 at 22:12
                Category: Code generation
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open

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Details:


example of a substantial performance regression from
kawa1.7 to kawa1.8a (latest CVS):

version 1.7:
#|kawa:93|# (time (let loop ((i 1000000)) (if (> i 0) (loop (- i 1)))))
269 ms elapsed

#|kawa:94|# (time (let loop ((i :: <int> 1000000)) (if (> i 0) (loop (- i
1)))))
6 ms elapsed


version 1.8a:
#|kawa:47|# (time (let loop ((i 1000000)) (if (> i 0) (loop (- i 1)))))
6931 ms elapsed

#|kawa:48|# (time (let loop ((i :: <int> 1000000)) (if (> i 0) (loop (- i
1)))))
6795 ms elapsed



perhaps we should begin adding some performance checks to the test suite







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