On Sat, 31 Aug 2024 10:16:57 GMT, ExE Boss <d...@openjdk.org> wrote: >> src/jdk.jfr/share/classes/jdk/jfr/internal/EventInstrumentation.java line >> 679: >> >>> 677: getEventConfiguration(blockCodeBuilder); >>> 678: // stack: [EW] [EW] [EC] >>> 679: blockCodeBuilder.loadConstant(eventTypeId); >> >> Does this means an int (single slot) can be pushed if the event type id >> happens to be below Integer.MAX_VALUE? > > No, because the type of `eventTypeId` is `long`, so the boxed type is `Long`, > therefore the only instructions are `LDC2_W`, `LCONST_0`, and `LCONST_1`: > > https://github.com/openjdk/jdk/blob/86c4104d86d91fefae3d9dc11e4f2684d29fcde1/src/java.base/share/classes/java/lang/classfile/CodeBuilder.java#L639-L642
No, because int and long are not interchangeable in the jvm. Only subints can be replaced by ints. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/20779#discussion_r1739708292
