On Fri, 28 Jun 2024 12:46:49 GMT, Shaojin Wen <d...@openjdk.org> wrote:
>> Currently, the java.util.Formatter$Conversion::isValid method is implemented >> based on switch, which cannot be inlined because codeSize > 325. This >> problem can be avoided by implementing it with ImmutableBitSetPredicate. >> >> use `-XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining` to see the master >> branch: >> >> @ 109 java.util.Formatter$Conversion::isValid (358 bytes) failed to >> inline: hot method too big >> >> >> current version >> >> @ 109 java.util.Formatter$Conversion::isValid (10 bytes) inline (hot) >> @ 4 >> jdk.internal.util.ImmutableBitSetPredicate$SmallImmutableBitSetPredicate::test >> (50 bytes) inline (hot) > > Shaojin Wen has updated the pull request incrementally with one additional > commit since the last revision: > > fix comment That's a clever change and more preferable (but still potentially fragile in the source to bytecode translation process). However I still don't understand the overall motivation, why does it matter? ------------- PR Comment: https://git.openjdk.org/jdk/pull/19926#issuecomment-2197275066
