RFR(S): 8181742: Load that bypasses arraycopy has wrong memory state
tobias.hartmann at oracle.com
Fri Jun 16 11:01:51 UTC 2017
On 16.06.2017 11:15, Roland Westrelin wrote:
>> this looks good to me but can you elaborate a bit on why this also fixes 8179678?
> With 8179678, the load from the arraycopy source is added after the
> arraycopy so we have to make sure the arraycopy doesn't modify the
> source element that is loaded otherwise the value loaded is
> incorrect. With this change, the load is moved above the arraycopy
> (i.e. happens before the arraycopy) so whether the arraycopy modifies
> the source element or not becomes irrelevant.
Thanks, got it.
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