RFR: 8309136: [JVMCI] add -XX:+UseGraalJIT flag
Doug Simon
dnsimon at openjdk.org
Tue May 30 22:38:04 UTC 2023
Use of the Graal-based JIT in OpenJDK currently requires the following flag: `-XX:+EnableJVMCIProduct`
This has no direct association with Graal. If the JDK image happens to include a non-Graal JVMCI implementation, it will be automatically selected. This would come as a surprise to users who equate JVMCI with Graal.
This PR introduces a new flag, `-XX:+UseGraalJIT` to address these shortcomings. The VM fails fast at startup if there is a non-Graal JVMCI implementation or no JVMCI implementation in the JDK image.
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Commit messages:
- add UseGraalJIT VM flag
Changes: https://git.openjdk.org/jdk/pull/14231/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14231&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8309136
Stats: 53 lines in 4 files changed: 36 ins; 0 del; 17 mod
Patch: https://git.openjdk.org/jdk/pull/14231.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/14231/head:pull/14231
PR: https://git.openjdk.org/jdk/pull/14231
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