040000 tree 388335a55c685736574bb6910fc0e34c98c16f43	s4-base
040000 tree 1ca26b8ee9e14fd0898c80cac6d6d282dfc91ff4	s4-benchmarks
040000 tree 585e7943b3d4c1ece971ff81c903a70287ecfd64	s4-comm
040000 tree 6d05b6b884a3f32b845c44231ec86eb597bee3e4	s4-core
040000 tree 4bfc0b58e22b17ac4c663be732b1e3543e38dcb2	s4-edsl
040000 tree 7b47ebc9598b5008f72a2ce88a735a0c0942bffd	s4-example
040000 tree 8c3cc837c3526c0ea22f1727c962efa98f703154	s4-tools