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Marcel van Lohuizen authored
This simplifies covering all cases, reducing the number of branches and making unrolling for simpler functions manageable. This significantly improves performance of non-ASCII input. This change will also allow addressing Issue #11733 in an efficient manner. RuneCountTenASCIIChars-8 13.7ns ± 4% 13.5ns ± 2% ~ (p=0.116 n=7+8) RuneCountTenJapaneseChars-8 153ns ± 3% 74ns ± 2% -51.42% (p=0.000 n=8+8) RuneCountInStringTenASCIIChars-8 13.5ns ± 2% 12.5ns ± 3% -7.13% (p=0.000 n=8+7) RuneCountInStringTenJapaneseChars-8 145ns ± 2% 68ns ± 2% -53.21% (p=0.000 n=8+8) ValidTenASCIIChars-8 14.1ns ± 3% 12.5ns ± 5% -11.38% (p=0.000 n=8+8) ValidTenJapaneseChars-8 147ns ± 3% 71ns ± 4% -51.72% (p=0.000 n=8+8) ValidStringTenASCIIChars-8 12.5ns ± 3% 12.3ns ± 3% ~ (p=0.095 n=8+8) ValidStringTenJapaneseChars-8 146ns ± 4% 70ns ± 2% -51.62% (p=0.000 n=8+7) DecodeASCIIRune-8 5.91ns ± 2% 4.83ns ± 3% -18.28% (p=0.001 n=7+7) DecodeJapaneseRune-8 12.2ns ± 7% 8.5ns ± 3% -29.79% (p=0.000 n=8+7) FullASCIIRune-8 5.95ns ± 3% 4.27ns ± 1% -28.23% (p=0.000 n=8+7) FullJapaneseRune-8 12.0ns ± 6% 4.3ns ± 3% -64.39% (p=0.000 n=8+8) Change-Id: Iea1d6b0180cbbee1739659a0a38038126beecaca Reviewed-on: https://go-review.googlesource.com/16940Reviewed-by:
Russ Cox <rsc@golang.org>
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