Reduce size of j.u.Formatter.Conversion#isValid

XMLWordPrintable

    • b05

        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)

              Assignee:
              Shaojin Wen
              Reporter:
              Shaojin Wen
              Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

                Created:
                Updated:
                Resolved: