RFR: 8216262: Remove develop flag DelayCompilationDuringStartup

[David Holmes]

On 7/01/2019 11:31 pm, Claes Redestad wrote:
> 
> 
> On 2019-01-07 14:01, Claes Redestad wrote:
>>>
>>> Normally we would follow a staged removal process: deprecate, 
>>> obsolete, then expire - see arguments.cpp and special_jvm_flags 
>>> table. In this case we can probably start at obsoletion, but that 
>>> would leave expiration for JDK 14. Or compiler folk can argue for / 
>>> justify immediate full expiration/removal.
>>
>> I'm under the impression this process does not apply to develop flags
>> (which are not visible an anything but debug builds)?
> 
> We've removed develop flags without obsoletion + expiry many times in
> the past[1], and while this goes against the written down expiration
> in arguments.cpp, I believe it to be a misguided recommendation for
> develop flags.

There have been and still can be exceptions depending on the actual flag 
but the general guideline is:

  * To remove internal options (e.g. diagnostic, experimental, develop 
options), use
  * a 2-step model adding major release numbers to the obsolete and 
expire columns.

Compiler folk can identify whether this flag can be expired immediately.

Thanks,
David

> /Claes
> 
> [1]
> https://bugs.openjdk.java.net/browse/JDK-8191870
> https://bugs.openjdk.java.net/browse/JDK-8132318
> https://bugs.openjdk.java.net/browse/JDK-8186042
> https://bugs.openjdk.java.net/browse/JDK-8180423
> https://bugs.openjdk.java.net/browse/JDK-8058259