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interchange: arch: do not allow site pips within sites

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During general routing, the only site pips that can be allowed are those
which connect a site wire to the routing interface.

This might be too restrictive when dealing with architectures that
require more than one site PIPs to route from a driver within a site to the routing
interface (which is something that should be allowed in the
interchange).

Signed-off-by: Alessandro Comodi <acomodi@antmicro.com>
This commit is contained in:
Alessandro Comodi 2021-05-10 18:53:30 +02:00
parent ced31aa917
commit fd93697a2d
1 changed files with 0 additions and 6 deletions
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6
fpga_interchange/arch.cc
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@ -1805,12 +1805,6 @@ bool Arch::checkPipAvailForNet(PipId pip, NetInfo *net) const
NPNR_ASSERT(src_wire_data.site == pip_data.site);
valid_pip = true;
}
if (dst_wire_data.site == bel_data.site && src_wire_data.site == bel_data.site) {
// This is site pip for the same site as the driver, allow
// this site pip.
valid_pip = true;
}
}
}