This fix simplifies the hotspot intrinsics for some platforms and optimizes the key computation for encryption. We can save the `genInvRoundKeys` computation when we only do encryption.
The micro:org.openjdk.bench.javax.crypto.AESReinit benchmark results are improved by 17% for ppc64 and 26% for x86_64. ------------- Commit messages: - 8371820: Further AES performance improvements for key schedule generation Changes: https://git.openjdk.org/jdk/pull/28299/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28299&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8371820 Stats: 33 lines in 2 files changed: 12 ins; 8 del; 13 mod Patch: https://git.openjdk.org/jdk/pull/28299.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/28299/head:pull/28299 PR: https://git.openjdk.org/jdk/pull/28299
