[PATCH] Generate more efficient memory barriers for LEON3

[Daniel Cederman]

That was an error on my side. The wrong memory model had gotten cached 
in a generated make script. Lets drop membar_leon3 also then :)

On 2014-07-11 11:15, Eric Botcazou wrote:
>> The full barrier pattern membar_leon3 also gets generated so I think
>> that one should be kept also.
>
> Do you have a testcase?  membar is generated by sparc_emit_membar_for_model
> and, for the TSO model of LEON3, implied = StoreStore | LoadLoad | LoadStore
> so mm can only be StoreLoad, which means that membar_storeload will match so
> the full barrier never will.
>