RFR: 8295698: AArch64: test/jdk/sun/security/ec/ed/EdDSATest.java failed with -XX:+UseSHA3Intrinsics

[Dong Bo]

In JDK-8252204, when implemented SHA3 intrinsics, we use `digest_length` to differentiate SHA3-224, SHA3-256, SHA3-384, SHA3-512 and calculate `block_size` with `block_size = 200 - 2 * digest_length`.
However, there are two extra SHA3 instances, SHAKE256 and SHAKE128, allowing an arbitrary `digest_length`:

	digest_length	block_size
SHA3-224	28	144
SHA3-256	32	136
SHA3-384	48	104
SHA3-512	64	72
SHAKE128	variable	168
SHAKE256	variable	136


This causes SIGSEGV crash or hash code mismatch with `test/jdk/sun/security/ec/ed/EdDSATest.java`. The test calls `SHAKE256` in `Ed448`.

The main idea of the patch is to pass the `block_size` to differentiate SHA3 instances.
Tests `test/jdk/sun/security/ec/ed/EdDSATest.java` and `./test/jdk/sun/security/provider/MessageDigest/SHA3.java` both passed.
And tier1~3 passed on SHA3 supported hardware.

The SHA3 intrinsics still deliver 20%~40% performance improvement on our pre-silicon simulated platform.
The latency and throughput of crypto SHA3 ops are designed to be 1 cpu cycle and 2 execution pipes respectively.

Compared with the main stream code, the performance change with this patch are negligible on real hardware and simulation platform.
Based on the JMH results of SHA3 intirinsics, performance can be improved by ~50% on some hardware, while some hardware have ~30% regression.
These performance details are available in the comments of the issue page.
I guess the performance benefit of SHA3 intrinsics is dependent on the micro architecture, it should be switched on/off based on the running platform.

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Commit messages:
 - Merge branch 'master' into 8295698-EdDSATest-crash
 - add some comments
 - 8295698: AArch64: test/jdk/sun/security/ec/ed/EdDSATest.java failed with -XX:+UseSHA3Intrinsics

Changes: https://git.openjdk.org/jdk/pull/10939/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10939&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295698
  Stats: 68 lines in 4 files changed: 18 ins; 13 del; 37 mod
  Patch: https://git.openjdk.org/jdk/pull/10939.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10939/head:pull/10939

PR: https://git.openjdk.org/jdk/pull/10939