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flowmap: clean up terminology.

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* "map": group gates into LUTs;
  * "pack": replace gates with LUTs.

This is important because we have FlowMap and DF-Map, and currently
our messages are ambiguous.

Also clean up some other log messages while we're at it.
This commit is contained in:
whitequark 2019-01-08 02:05:06 +00:00
parent 211c26a4c9
commit e792bd56b7
1 changed files with 18 additions and 17 deletions
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35
passes/techmap/flowmap.cc
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@ -769,7 +769,7 @@ struct FlowmapWorker
}
}
int pack_luts()
int map_luts()
{
pool<RTLIL::SigBit> worklist = outputs;
while (!worklist.empty())
@ -784,12 +784,12 @@ struct FlowmapWorker
int depth = 0;
for (auto label : labels)
depth = max(depth, label.second);
log("Solved to %d LUTs with maximum depth %d.\n", (int)lut_nodes.size(), depth);
log("Mapped to %zu LUTs with maximum depth %d.\n", lut_nodes.size(), depth);
if (debug)
{
dump_dot_lut_graph("flowmap-packed.dot", GraphMode::Label);
log("Dumped packed graph to `flowmap-packed.dot`.\n");
dump_dot_lut_graph("flowmap-mapped.dot", GraphMode::Label);
log("Dumped mapped graph to `flowmap-mapped.dot`.\n");
}
return depth;
@ -1196,6 +1196,8 @@ struct FlowmapWorker
bool relax_depth_for_bound(bool first, int depth_bound, dict<RTLIL::SigBit, pool<RTLIL::SigBit>> &lut_critical_outputs)
{
size_t initial_count = lut_nodes.size();
for (auto node : lut_nodes)
{
lut_slacks[node] = depth_bound - (lut_depths[node] + lut_altitudes[node]);
@ -1214,7 +1216,7 @@ struct FlowmapWorker
if (potentials.empty())
{
log(" Relaxed to %d LUTs.\n", (int)lut_nodes.size());
log(" Relaxed to %zu (+%zu) LUTs.\n", lut_nodes.size(), lut_nodes.size() - initial_count);
if (!first && break_num == 1)
{
log(" Design fully relaxed.\n");
@ -1338,7 +1340,7 @@ struct FlowmapWorker
}
}
void map_cells(int minlut)
void pack_cells(int minlut)
{
ConstEval ce(module);
for (auto input_node : inputs)
@ -1351,15 +1353,15 @@ struct FlowmapWorker
{
auto origin = node_origins[node];
if (origin.cell->getPort(origin.port).size() == 1)
log("Mapping %s.%s.%s (%s).\n",
log("Packing %s.%s.%s (%s).\n",
log_id(module), log_id(origin.cell), origin.port.c_str(), log_signal(node));
else
log("Mapping %s.%s.%s [%d] (%s).\n",
log("Packing %s.%s.%s [%d] (%s).\n",
log_id(module), log_id(origin.cell), origin.port.c_str(), origin.offset, log_signal(node));
}
else
{
log("Mapping %s.%s.\n", log_id(module), log_signal(node));
log("Packing %s.%s.\n", log_id(module), log_signal(node));
}
for (auto gate_node : lut_gates[node])
@ -1417,9 +1419,9 @@ struct FlowmapWorker
lut_area += lut_table.size();
if ((int)input_nodes.size() >= minlut)
log(" Packed into a %d-LUT %s.%s.\n", (int)input_nodes.size(), log_id(module), log_id(lut));
log(" Packed into a %zu-LUT %s.%s.\n", input_nodes.size(), log_id(module), log_id(lut));
else
log(" Packed into a %d-LUT %s.%s (implemented as %d-LUT).\n", (int)input_nodes.size(), log_id(module), log_id(lut), minlut);
log(" Packed into a %zu-LUT %s.%s (implemented as %d-LUT).\n", input_nodes.size(), log_id(module), log_id(lut), minlut);
}
for (auto node : mapped_nodes)
@ -1440,7 +1442,7 @@ struct FlowmapWorker
log("Labeling cells.\n");
discover_nodes(cell_types);
label_nodes();
int depth = pack_luts();
int depth = map_luts();
if (relax)
{
@ -1450,8 +1452,8 @@ struct FlowmapWorker
}
log("\n");
log("Mapping cells.\n");
map_cells(minlut);
log("Packing cells.\n");
pack_cells(minlut);
}
};
@ -1603,9 +1605,8 @@ struct FlowmapPass : public Pass {
}
log("\n");
log("Mapped %d LUTs.\n", lut_count);
log("Packed %d cells; duplicated %d cells.\n", packed_count, packed_count - gate_count);
log("Solution has %.1f%% area overhead.\n", (lut_area - gate_area) * 100.0 / gate_area);
log("Packed %d cells (%d of them duplicated) into %d LUTs.\n", packed_count, packed_count - gate_count, lut_count);
log("Solution takes %.1f%% of original gate area.\n", lut_area * 100.0 / gate_area);
}
} FlowmapPass;