RFR: 8349860: Make Class.isArray(), Class.isInterface() and Class.isPrimitive() non-native

Coleen Phillimore coleenp at openjdk.org
Tue Feb 18 23:49:52 UTC 2025


Class.isInterface() can check modifier flags, Class.isArray() can check whether component mirror is non-null and Class.isPrimitive() needs a new final transient boolean in java.lang.Class that the JVM code initializes.
Tested with tier1-4 and performance tests.

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Commit messages:
 - Add ')' removed from jvmci test.
 - Shrink modifiers flag so isPrimitive can share word.
 - Remove isPrimitive intrinsic in favor of a boolean.
 - Make isInterface non-native.
 - Make isArray non-native

Changes: https://git.openjdk.org/jdk/pull/23572/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23572&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349860
  Stats: 178 lines in 19 files changed: 37 ins; 115 del; 26 mod
  Patch: https://git.openjdk.org/jdk/pull/23572.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23572/head:pull/23572

PR: https://git.openjdk.org/jdk/pull/23572


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