RTAB add mshr/directory grant mask

[shaoqian2001]

Use two round robin arbiters to grant replay requests that depend on MSHR entry and directory entry.

[cfuguet]

@shaoqian2001 Thank you very much for this PR. I will take a look ASAP.

[cfuguet]

Hi @shaoqian2001,

I've just ran some long non-regression tests and everything is ok.

I do not see any performance improvement (or slowdown) though with RANDOM test sequences. But I expect to see some improvement in some specific benchmarks. Anyway, I think this should be merged.

Before I can merge, you need to sign the Eclipse Contributor Agreement. For this you need to create an Eclipse account. Normally, if you click on the failing check above (eclipsefdn/eca), you have the instructions to follow.

Can you please do this ?

Thanks !

César

[cfuguet]

Thanks @shaoqian2001