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The-OpenROAD-Project / OpenSTA

OpenSTA engine
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Optimize the order of conditions in conjunction in tagMatch function #218

Closed RRozak closed 3 months ago

RRozak commented 10 months ago

As I measured on grt phase of black_parrot design, tagMatch function is called over 1.1 billion times (2.6 billion when https://github.com/The-OpenROAD-Project/OpenSTA/pull/216 is merged), so it is worth optimizing. I sorted conditions in the conjunction by failing frequency. I also noticed that the last 4 of them always pass if all previous have passed, so maybe they aren't really needed.

maliberty commented 3 months ago

Issues or PRs should be filed with https://github.com/parallaxsw/OpenSTA if still relevant. This is effectively a fork (though not strictly for historical reasons).