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techmap wires named _TECHMAP_REPLACE_.<identifier> to create alias

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This commit is contained in:
Eddie Hung 2019-09-30 17:20:12 -07:00
parent d963e8c2c6
commit edc3780723
1 changed files with 10 additions and 0 deletions
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10
passes/techmap/techmap.cc
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@ -257,6 +257,12 @@ struct TechmapWorker
w->add_strpool_attribute(ID(src), extra_src_attrs);
}
design->select(module, w);
if (it.second->name.begins_with("\\_TECHMAP_REPLACE_.")) {
IdString replace_name = stringf("%s%s", orig_cell_name.c_str(), it.second->name.c_str() + strlen("\\_TECHMAP_REPLACE_"));
Wire *replace_w = module->addWire(replace_name, it.second);
module->connect(replace_w, w);
}
}
SigMap tpl_sigmap(tpl);
@ -1198,6 +1204,10 @@ struct TechmapPass : public Pass {
log("\n");
log("A cell with the name _TECHMAP_REPLACE_ in the map file will inherit the name\n");
log("and attributes of the cell that is being replaced.\n");
log("A wire with a name of the form `_TECHMAP_REPLACE_.<suffix>` in the map file will\n");
log("cause a new wire alias to be created with its name set to the original but with\n");
log("its `_TECHMAP_REPLACE_' prefix to be substituted with the name of the cell being\n");
log("replaced.\n");
log("\n");
log("See 'help extract' for a pass that does the opposite thing.\n");
log("\n");