RFR :7088419 : (L) Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 and java.util.zip.Adler32 (original) (raw)

David Chase david.r.chase at oracle.com
Fri May 31 02:17:47 UTC 2013

Not sure where this stands, given that Vladimir K has a grand plan to turn the assembly language into an intrinsic (this is not how I would normally approach it) but there is another webrev with the unnecessary import removed:

http://cr.openjdk.java.net/~drchase/7088419/webrev.04/

On 2013-05-27, at 11:29 AM, David Chase <david.r.chase at oracle.com> wrote:

On 2013-05-27, at 9:27 AM, David Chase <david.r.chase at oracle.com> wrote: Here, seeing is believing (oh, but look, I trashed the output format on the warmup, I should fix that):

FIRST, WITH SHORT WARMUP: dr2chase:zip $ $BB/java TimeChecksum ---------- Adler32 ---------- Warmup... 8 1,312 3 4 No, I didn't trash the output format. That is 8, 1312, 3, 4. The small-stuff warmup took that long. David

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