On Tue, 11 Feb 2025 20:56:39 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:
> 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. Is the change to isInterface and isPrimitive performance neutral? As @IntrinsicCandidates, there would be some performance gain. src/hotspot/share/prims/jvm.cpp line 2284: > 2282: // Please, refer to the description in the jvmtiThreadState.hpp. > 2283: > 2284: JVM_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) JVM_IsInteface is deleted in Class.c, what purpose is this? ------------- PR Review: https://git.openjdk.org/jdk/pull/23572#pullrequestreview-2627122068 PR Review Comment: https://git.openjdk.org/jdk/pull/23572#discussion_r1961858757
