[PATCH, alpha]: Wrap {un,}aligned_store sequence with memory blockages.

[Richard Henderson]

On 06/27/2014 10:04 AM, Uros Bizjak wrote:
> This happened due to the way stores to QImode and HImode locations are
> implemented on non-BWX targets. The sequence reads full word, does its
> magic to the part and stores the full word with changed part back to
> the memory. However - the scheduler mixed two sequences, violating the
> atomicity of RMW sequence.

Except that addresses with AND in them (ldq_u, stq_u) are already supposed to
be memory barriers.  So you shouldn't need to add such to them again.

I think something else has gone wrong somewhere.


r~