Closed
Bug 466135
Opened 17 years ago
Closed 17 years ago
Mixins vs Inheritance for Filters
Categories
(Tamarin Graveyard :: Tracing Virtual Machine, defect)
Tamarin Graveyard
Tracing Virtual Machine
Tracking
(Not tracked)
VERIFIED
WONTFIX
People
(Reporter: gal, Assigned: gal)
Details
Attachments
(1 file)
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15.45 KB,
patch
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Details | Diff | Splinter Review |
nanojit is about 10 times slower compiling regular expressions than a hand-woven machine code generator that doesn't do register allocation. I was wondering whether the fact that we use inheritance to model the filters has anything to do with it. Attached is a patch that uses template-based mixins instead of inheritance. In theory a good C++ compiler should flatten this out completely and no dispatch overhead should be incurred. Either it didn't matter in the first place, or g++ just sucks, but I didn't see any noticeable improvement. This only re-works the backwards pipeline.
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Assignee | |
Comment 1•17 years ago
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Assignee: nobody → gal
Status: NEW → ASSIGNED
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Assignee | |
Comment 2•17 years ago
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Verdict: a total waste of time. Inheritance is doing just fine, at least with gcc.
Status: ASSIGNED → RESOLVED
Closed: 17 years ago
Resolution: --- → WONTFIX
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Updated•16 years ago
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Status: RESOLVED → VERIFIED
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Description
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