We (ARC) intend to contribute our improvements to the ARC gcc/binutils support once our Copyright assignment is in place. We are currently considering removing the ARCtangent-A4 support from our sources, as we don't need it anymore. The only reason to keep the code would be to facilitate merges with the FSF code base. I expect we would do regular testing for ARC600 and ARC700 support, since we are interested in this support for our current and future products. ARCtangent-A5 is similar enough to ARC600 that it shouldn't require much testing / maintenance effort to keep it around. However, the ARCtangent-A4 has a number of architectural differences and uses a different instruction encoding. Since we don't use ARCtangent-A4 support, we would not test it. So, is there anybody still interested in ARCtangent-A4 support to the point that they are willing to do regular tests once the port is maintained?
If there is no volunteer for testing, I suppose we can assume that ARCtangent-A4 support will be dropped from the FSF sources for lack of testing.
