Disable with -Dgraal.VectorizeHashes=false.

Added support for vectorizing hashCode-like loops using the hash = c * hash + array.

Enable it with -Dgraal.VectorizeSIMD=true. SIMD vectorization is still experimental and not enabled by default.

Enhanced SIMD vectorization, to support vector byte reversal (e.g., Integer.reverseBytes).

Added a new optimization that analyzes code guarded by a conditional of the form x = y and replace all uses of x with y (or vice versa) if the replacement results in potential for further optimization.

Loop inversion is on by default and can be disabled with -Dgraal.LoopInversion=false.

Inverted loops have superior characteristics for instruction level parallelism and optimization capabilities compared to regular, head counted loops. We have seem performance improvements of up to 30% for micro benchmarks exercising the inverted loop shape. This adds compiler support to generate inverted loops from regular ones.

Added a novel loop inversion optimization in GraalVM Enterprise.

These loops are subject to full unrolling, partial unrolling, guard optimization and vectorization. This new capability can be disabled with -Dgraal.DetectInvertedLoopsAsCounted=false.

Added support to detect inverted (tail counted) loops as counted loops. GraalVM Enterprise now detects such loops as counted, enabling them to be analyzed and optimized like all other counted loops.

Windows platform compatibility: To run GraalVM Community Edition based on OpenJDK 8u292 on a Windows platform, the MSVCR100.dll redistributable package needs to be installed (for more details, see the issue #3187).

Linux AArch64 platform compatibility: The GraalVM distributions for Linux AArch64 architecture remain experimental in this release. Supported features include the GraalVM compiler, the gu tool, the Node.js JavaScript runtime, Native Image, some developer tools.

GraalVM Enterprise Edition for macOS based on Oracle JDK 8 continue to be available.

MacOS platform support: Builds of GraalVM Community Edition for macOS based on OpenJDK 8 are no longer being produced.

Java 16 (experimental) support: The GraalVM distributions based on Oracle Java 16 and OpenJDK 16 are available for download with several known limitations.

16.0.1 for Java 16 based GraalVM Enterprise, please see Java SE 16 release notes.

11.0.11 for Java 11 based GraalVM Enterprise, please see Java SE 11 release notes.

8u291 for Java 8 based GraalVM Enterprise, please see Java SE 8 release notes.