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Improve xilinx_srl.fixed generate, add .variable generate

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This commit is contained in:
Eddie Hung 2019-08-26 17:49:08 -07:00
parent 45c34c87ee
commit e95fb24574
1 changed files with 75 additions and 26 deletions
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115
passes/pmgen/xilinx_srl.pmg
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@ -28,36 +28,28 @@ generate
{
case 0:
case 1:
case 2:
case 3:
cell = module->addCell(NEW_ID, \FDRE);
if (r & 1)
cell->setPort(\R, State::S1);
else
cell->setPort(\R, State::S0);
if (r & 2)
cell->setPort(\CE, State::S1);
else
cell->setPort(\CE, State::S0);
break;
case 4:
cell = module->addCell(NEW_ID, $_DFF_N_);
break;
case 5:
case 6:
cell = module->addCell(NEW_ID, $_DFFE_PP_);
if (r & 1)
cell->setPort(\E, State::S1);
else
cell->setPort(\E, State::S0);
break;
case 7:
cell = module->addCell(NEW_ID, \foobar);
break;
}
cell->setPort(\C, C);
cell->setPort(\D, D);
cell->setPort(\Q, Q);
cell->setPort(\CE, module->addWire(NEW_ID));
if (r & 1)
cell->setPort(\R, module->addWire(NEW_ID));
else
cell->setPort(\R, State::S0);
break;
case 2:
case 3:
cell = module->addDffGate(NEW_ID, C, D, Q, r & 1);
break;
case 4:
case 5:
case 6:
case 7:
cell = module->addDffeGate(NEW_ID, C, module->addWire(NEW_ID), D, Q, r & 1, r & 2);
break;
default: log_abort();
}
endmatch
code clk_port en_port
@ -151,18 +143,15 @@ match next
filter !next->type.in(\FDRE) || !first->hasParam(\IS_R_INVERTED) || (next->hasParam(\IS_R_INVERTED) && param(next, \IS_R_INVERTED).as_bool() == param(first, \IS_R_INVERTED).as_bool())
filter !next->type.in(\FDRE, \FDRE_1) || port(next, \R) == port(first, \R)
generate 10
SigSpec C = chain.back()->getPort(\C);
SigSpec D = module->addWire(NEW_ID);
SigSpec Q = chain.back()->getPort(\D);
Cell *cell = module->addCell(NEW_ID, chain.back()->type);
cell->setPort(\C, C);
cell->setPort(\D, D);
cell->setPort(\Q, Q);
cell->setPort(\C, chain.back()->getPort(\C));
cell->setPort(\D, module->addWire(NEW_ID));
cell->setPort(\Q, chain.back()->getPort(\D));
if (cell->type == \FDRE) {
cell->setPort(\R, chain.back()->getPort(\R));
cell->setPort(\CE, chain.back()->getPort(\CE));
}
else if (cell->type == $_DFFE_PP_)
else if (cell->type.begins_with("$_DFFE_"))
cell->setPort(\E, chain.back()->getPort(\E));
endmatch
@ -199,6 +188,9 @@ match shiftx
select !shiftx->has_keep_attr()
select param(shiftx, \Y_WIDTH).as_int() == 1
filter param(shiftx, \A_WIDTH).as_int() >= minlen
generate
minlen = 3;
module->addShiftx(NEW_ID, module->addWire(NEW_ID, rng(6)+minlen), module->addWire(NEW_ID, 3), module->addWire(NEW_ID));
endmatch
code shiftx_width
@ -213,6 +205,33 @@ match first
select nusers(port(first, \Q)[idx]) <= 2
index <SigBit> port(first, \Q)[idx] === port(shiftx, \A)[shiftx_width-1]
set slice idx
generate
SigSpec C = module->addWire(NEW_ID);
auto WIDTH = rng(3)+1;
SigSpec D = module->addWire(NEW_ID, WIDTH);
SigSpec Q = module->addWire(NEW_ID, WIDTH);
auto r = rng(8);
Cell *cell = nullptr;
switch (r)
{
case 0:
case 1:
cell = module->addDff(NEW_ID, C, D, Q, r & 1);
break;
case 2:
case 3:
case 4:
case 5:
//cell = module->addDffe(NEW_ID, C, module->addWire(NEW_ID), D, Q, r & 1, r & 4);
//break;
case 6:
case 7:
WIDTH = 1;
cell = module->addDffGate(NEW_ID, C, D[0], Q[0], r & 1);
break;
default: log_abort();
}
shiftx->connections_.at(\A)[shiftx_width-1] = port(cell, \Q)[rng(WIDTH)];
endmatch
code clk_port en_port
@ -264,6 +283,36 @@ match next
filter !next->type.in($dffe) || param(next, \EN_POLARITY).as_bool() == param(first, \EN_POLARITY).as_bool()
filter !chain_bits.count(port(next, \D)[idx])
set slice idx
generate
if (GetSize(chain) < shiftx_width) {
auto back = chain.back().first;
auto slice = chain.back().second;
if (back->type.in($dff, $dffe)) {
auto WIDTH = GetSize(port(back, \D));
if (rng(2) == 0 && slice < WIDTH-1) {
auto new_slice = slice + rng(WIDTH-1-slice);
back->connections_.at(\D)[slice] = port(back, \Q)[new_slice];
}
else {
auto D = module->addWire(NEW_ID, WIDTH);
if (back->type == $dff)
module->addDff(NEW_ID, port(back, \CLK), D, port(back, \D), param(back, \CLK_POLARITY).as_bool());
else if (back->type == $dffe)
module->addDffe(NEW_ID, port(back, \CLK), port(back, \EN), D, port(back, \D), param(back, \CLK_POLARITY).as_bool(), param(back, \EN_POLARITY).as_bool());
else
log_abort();
}
}
else if (back->type.begins_with("$_DFF_")) {
Cell *cell = module->addCell(NEW_ID, back->type);
cell->setPort(\C, back->getPort(\C));
cell->setPort(\D, module->addWire(NEW_ID));
cell->setPort(\Q, back->getPort(\D));
}
else
log_abort();
shiftx->connections_.at(\A)[shiftx_width-1-GetSize(chain)] = port(back, \D)[slice];
}
endmatch
code