By adding the JVM startup parameters -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining and analyzing the printed log information, and found that the code size of the j.t.f.DateTimePrintContext::adjust method is 382, which is greater than 325, causing inlining failure.

```
@ 7 java.time.format.DateTimePrintContext::adjust (382 bytes) failed to inline: hot method too big
```

By splitting the code into common/uncommon, and moving the uncommon code into adjust0, the adjust method is kept small and can be inlined by the C2 optimizer.