More on memory barriers

Andrew Haley aph at
Wed Sep 17 10:31:19 UTC 2014

On 09/16/2014 08:40 AM, Andrew Haley wrote:
> On 15/09/14 17:20, Vitaly Davidovich wrote:
>> Looking at hg history, MemBarStoreStore was added a few years ago, whereas
>> the code in question is much older.  The comments in the changelist adding
>> MemBarStoreStore seem to indicate it was done to address a specific issue,
>> and my guess is that it wasn't "retrofitted" into all possible places.
> That sounds plausible.  I'll change this to a StoreStore in the AArch64
> port and do some testing.

Bah, that doesn't work.  Escape analysis assumes that a StoreStore
is only used in certain contexts.  Back to the drawing board.


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