Bug ID: JDK-8267993 [aarch64] Implement intrinsic for CounterMode::implCrypt()

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 17

Priority: P4
Status: Closed
Resolution: Fixed
CPU: aarch64

Submitted: 2021-05-31
Updated: 2021-11-22
Resolved: 2021-11-22

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Change JDK-8143925 implemented an x86-intrinsic for `CounterMode::implCrypt()`. In order to prevent regressions for customers who migrate from x86 to aarch64 (see for example https://github.com/aws/aws-graviton-getting-started/issues/110) we should intrinsify this method on aarch64 as well.

JDK-8143925 has an attached test (AES.java in https://bugs.openjdk.java.net/secure/attachment/55267/Tests.zip) which is based on the example vectors provided by "NIST Special Publication 800-38A" (https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf). This test (along with the JTreg tests under test/hotspot/jtreg/compiler/codegen/) should be used to verify the aarch64 implementation.

Duplicate :	JDK-8271567 - AArch64: AES Galois CounterMode (GCM) interleaved implementation using vector instructions
Relates :	JDK-8143925 - enhancing CounterMode.crypt() for AESCrypt.implEncryptBlock()