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authormycroft <mycroft@NetBSD.org>2000-05-19 04:15:55 +0000
committermycroft <mycroft@NetBSD.org>2000-05-19 04:15:55 +0000
commitc23ccd01a05ab969477afcbaa7ce547e81027cc5 (patch)
tree169d47745c5ad0638796b2b8ff42d95c869b1a28 /sys/dev
parent1cff94b896c0ebb90761987df44a20f92f835449 (diff)
Two optimizations in quickch():
* Don't bother comparing lines that are not dirty when looking for the top and bottom regions. * In the loop that searches for the largest equal region, do the totally half-assed hack of splitting the inner loop into two parts -- comparing only the hash values the first time, and doing memcmp()s the second time. This makes many of my test cases >100x as fast. XXX This code needs a lot more work.
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