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clkbufmap to only check clkbuf_inhibit if no selection given

This commit is contained in:
Eddie Hung 2019-08-23 11:14:42 -07:00
parent 5628e2ec53
commit 619f2414e5
1 changed files with 18 additions and 5 deletions
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23
passes/techmap/clkbufmap.cc
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@ -37,11 +37,18 @@ struct ClkbufmapPass : public Pass {
ClkbufmapPass() : Pass("clkbufmap", "insert global buffers on clock networks") { } ClkbufmapPass() : Pass("clkbufmap", "insert global buffers on clock networks") { }
void help() YS_OVERRIDE void help() YS_OVERRIDE
{ {
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n"); log("\n");
log(" clkbufmap [options] [selection]\n"); log(" clkbufmap [options] [selection]\n");
log("\n"); log("\n");
log("Inserts global buffers between nets connected to clock inputs and their\n"); log("Inserts global buffers between nets connected to clock inputs and their drivers.\n");
log("drivers.\n"); log("\n");
log("In the absence of any selection, all wires without the 'clkbuf_inhibit'\n");
log("attribute will be considered for global buffer insertion.\n");
log("Alternatively, to consider all wires without the 'buffer_type' attribute set to\n");
log("'none' or 'bufr' one would specify:\n");
log(" 'w:* a:buffer_type=none a:buffer_type=bufr %%u %%d'\n");
log("as the selection.\n");
log("\n"); log("\n");
log(" -buf <celltype> <portname_out>:<portname_in>\n"); log(" -buf <celltype> <portname_out>:<portname_in>\n");
log(" Specifies the cell type to use for the global buffers\n"); log(" Specifies the cell type to use for the global buffers\n");
@ -94,10 +101,16 @@ struct ClkbufmapPass : public Pass {
} }
break; break;
} }
extra_args(args, argidx, design);
bool select = false;
if (argidx < args.size()) {
if (args[argidx].compare(0, 1, "-") != 0)
select = true;
extra_args(args, argidx, design);
}
if (buf_celltype.empty()) if (buf_celltype.empty())
log_error("The -buf option is required."); log_error("The -buf option is required.\n");
// Cell type, port name, bit index. // Cell type, port name, bit index.
pool<pair<IdString, pair<IdString, int>>> sink_ports; pool<pair<IdString, pair<IdString, int>>> sink_ports;
@ -158,7 +171,7 @@ struct ClkbufmapPass : public Pass {
// Should not happen. // Should not happen.
if (wire->port_input && wire->port_output) if (wire->port_input && wire->port_output)
continue; continue;
if (wire->get_bool_attribute("\\clkbuf_inhibit")) if (!select && wire->get_bool_attribute("\\clkbuf_inhibit"))
continue; continue;
pool<int> input_bits; pool<int> input_bits;