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added resource sharing of $macc cells

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This commit is contained in:
Clifford Wolf 2014-10-03 12:58:40 +02:00
parent c3e779a65f
commit 3e4b0cac8d
2 changed files with 270 additions and 3 deletions
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9
kernel/macc.h
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@ -45,6 +45,9 @@ struct Macc
if (SIZE(port.in_a) == 0 && SIZE(port.in_b) == 0)
continue;
if (SIZE(port.in_a) < SIZE(port.in_b))
std::swap(port.in_a, port.in_b);
if (SIZE(port.in_a) == 1 && SIZE(port.in_b) == 0 && !port.is_signed && !port.do_subtract) {
bit_ports.append(port.in_a);
continue;
@ -224,6 +227,12 @@ struct Macc
return true;
}
Macc(RTLIL::Cell *cell = nullptr)
{
if (cell != nullptr)
from_cell(cell);
}
};
YOSYS_NAMESPACE_END