RFR(S): 8173196: [REDO] C2 does not optimize redundant memory operations with G1
vladimir.kozlov at oracle.com
Wed May 29 19:58:00 UTC 2019
Looks good to me too.
On 5/27/19 2:17 AM, Tobias Hartmann wrote:
> Hi Roland,
> this looks good to me. I'll run some extended testing and let you know once it's done.
> On 22.05.19 11:25, Roland Westrelin wrote:
>> Previous attempt at this was discussed here:
>> And the follow up bugs with some comments on a possible fix:
>> The new fix is very similar to the previous one. The 2 differences are:
>> - aarch64 code shouldn't need any change because of 8209420 ("Track
>> membars for volatile accesses so they can be properly optimized")
>> - The membar only affects the raw memory slice which is now properly
>> handled by MachNodes thanks to 8209691 ("Allow MemBar on single memory
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