FYC : JDK-7197183 : Improve copying behaviour of String.subSequence() (original) (raw)

Ulf Zibis Ulf.Zibis at CoSoCo.de
Tue Feb 19 19:55:45 UTC 2013

Am 19.02.2013 20:00, schrieb Mike Duigou:

If I update this patch I will add Ulf suggestion of adding AbstractStringBuilder as a third instanceof case. Mike

Thanks! I'm stil wondering, why HotSpot doesn't optimize for (int i = start, j = count; i < end; i++, j++) { value[j] = s.charAt(i); } to something equivalent of System.arrayCopy(...) Maybe we could introduce a new intrinsic for something like CharSequence.rangeCopy(int start, int end, CharSequence dst, int start)

-Ulf

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