Integrated: 8350866: [x86] Add C1 intrinsics for CRC32-C

[David Linus Briemann]

On Thu, 27 Feb 2025 14:30:42 GMT, David Linus Briemann <duke at openjdk.org> wrote:

> Local benchmarks show good improvements for the crc32c intrinsification:
> 
> 
> without intrinsic (master):
> 
> 
> $JDK/java -DmsgSize=5120 -XX:TieredStopAtLevel=1 -Xcomp TestCRC32C 300000
>  offset = 0
> msgSize = 5120 bytes
>   iters = 300000
> -------------------------------------------------------
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> CRC32C.update(byte[]) runtime = 1.186507782 seconds
> CRC32C.update(byte[]) throughput = 1294.5553525244388 MB/s
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> -------------------------------------------------------
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> CRC32C.update(ByteBuffer) runtime = 1.355515648 seconds
> CRC32C.update(ByteBuffer) throughput = 1133.1481139788364 MB/s
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> -------------------------------------------------------
> 
> 
> with intrinsic:
> 
> 
> $JDK/java -DmsgSize=5120 -XX:TieredStopAtLevel=1 -Xcomp TestCRC32C 300000
>  offset = 0
> msgSize = 5120 bytes
>   iters = 300000
> -------------------------------------------------------
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> CRC32C.update(byte[]) runtime = 0.065003188 seconds
> CRC32C.update(byte[]) throughput = 23629.610289267657 MB/s
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> -------------------------------------------------------
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> CRC32C.update(ByteBuffer) runtime = 0.072310133 seconds
> CRC32C.update(ByteBuffer) throughput = 21241.836189127185 MB/s
> CRCs: crc = 0cbca9c8, crcReference = 0cbca9c8
> -------------------------------------------------------

This pull request has now been integrated.

Changeset: 4c5956d7
Author:    David Linus Briemann <david.briemann at sap.com>
Committer: Martin Doerr <mdoerr at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/4c5956d7481e043c35f5dc78f095516288a00a2e
Stats:     71 lines in 3 files changed: 65 ins; 0 del; 6 mod

8350866: [x86] Add C1 intrinsics for CRC32-C

Reviewed-by: mdoerr, kvn

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PR: https://git.openjdk.org/jdk/pull/23826