RFR(XS): 8246023: Obsolete LIRFillDelaySlot

[Mikael Vidstedt]

Tobias/Vladimir, thanks for the reviews! Change pushed.

Cheers,
Mikael

> On May 28, 2020, at 7:19 AM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> +1
> 
> Thanks,
> Vladimir
> 
> On 5/27/20 11:51 PM, Tobias Hartmann wrote:
>> Hi Mikael,
>> looks good and trivial to me.
>> Best regards,
>> Tobias
>> On 28.05.20 04:19, Mikael Vidstedt wrote:
>>> 
>>> Please review this small change which obsoletes the LIRFillDelaySlot flag:
>>> 
>>> JBS: https://bugs.openjdk.java.net/browse/JDK-8246023
>>> webrev: https://cr.openjdk.java.net/~mikael/webrevs/8246023/webrev.00/open/webrev
>>> CSR: https://bugs.openjdk.java.net/browse/JDK-8246024
>>> 
>>> Background (from JBS):
>>> 
>>> With SPARC removed (JDK-8241787) the LIRFillDelaySlot flag no longer has any relevant effect and should be removed using the normal process. Since the flag was really only useful on SPARC and since all the code it once controlled is now gone the flag will go directly to obsolete, skipping the deprecation step.
>>> 
>>> Testing:
>>> 
>>> * Manual verification running with the flag: spits out the warning as expected
>>> * tier1: in progress
>>> 
>>> 
>>> Note: I believe additional cleanup is possible related to delay slots, but I’d like to handle that separately.
>>> 
>>> Cheers,
>>> Mikael
>>>