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This commit is contained in:
Alain Dargelas 2024-11-25 20:04:13 -08:00
parent cd15e211b7
commit c0c0d9c559
1 changed files with 19 additions and 9 deletions
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28
passes/cmds/longloop_select.cc
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@ -27,9 +27,18 @@ PRIVATE_NAMESPACE_BEGIN
struct LongLoopSelect : public ScriptPass {
LongLoopSelect()
: ScriptPass("longloop_select", "Selects long for-loops (Creating logic above a certain logic depth) for further optimization")
: ScriptPass("longloop_select", "Selects long for-loops (Creating logic above a certain logic depth) for further optimizations")
{
}
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" longloop_select [-depth <for-loop threshold depth>] [-abc <ABC script>]\n");
log(" If no ABC script is provided, this pass simply selects cells in for-loops\n");
log(" If an ABC script is provided, this pass selects cells in a per for-loop basis and runs ABC with the given script\n");
log("\n");
}
void script() override {}
// Adapted from the torder pass
@ -142,19 +151,20 @@ struct LongLoopSelect : public ScriptPass {
log(" Found %ld for-loop clusters in module %s\n", loopIndexCellMap.size(), module->name.c_str());
log_flush();
}
for (std::map<std::string, std::vector<Cell *>>::iterator itrCluster = loopIndexCellMap.begin();
itrCluster != loopIndexCellMap.end(); itrCluster++) {
std::string loopInd = itrCluster->first;
if (itrCluster->second.size() < threshold_depth) {
if (debug) {
log(" Skipping loop id %s as it contains only %ld cells\n", loopInd.c_str(), itrCluster->second.size());
log(" Skipping loop location %s as it contains only %ld cells\n", loopInd.c_str(),
itrCluster->second.size());
log_flush();
}
continue;
}
if (debug) {
log(" Analyzing loop id %s containing %ld cells\n", loopInd.c_str(), itrCluster->second.size());
log(" Analyzing loop location %s containing %ld cells\n", loopInd.c_str(), itrCluster->second.size());
log_flush();
}
// For a given for-loop cell group, perform topological sorting to get the logic depth of the ending cell in
@ -168,8 +178,8 @@ struct LongLoopSelect : public ScriptPass {
log_flush();
}
if (logicdepth > (int)threshold_depth) {
log(" Selecting %ld cells in for-loop id %s of depth %d ending with cell %s\n", itrCluster->second.size(),
loopInd.c_str(), logicdepth, log_id((*itrLastCell)));
log(" Selecting %ld cells in for-loop location %s of depth %d ending with cell %s\n",
itrCluster->second.size(), loopInd.c_str(), logicdepth, log_id((*itrLastCell)));
log_flush();
std::string src_info = (*itrLastCell)->get_src_attribute();
if (!(*itrLastCell)->get_string_attribute("\\in_for_loop").empty()) {
@ -177,6 +187,7 @@ struct LongLoopSelect : public ScriptPass {
}
// Select all cells in the loop cluster
if (!abc_script.empty()) {
// If an ABC script is provided, select on a per-loop basis
Pass::call(design, "select -none");
}
for (auto cell : itrCluster->second) {
@ -190,18 +201,17 @@ struct LongLoopSelect : public ScriptPass {
if (!abc_script.empty()) {
if (abc_script.find("map") == std::string::npos) {
abc_script.erase(std::remove(abc_script.begin(), abc_script.end(), '"'), abc_script.end());
std::string command = "abc -map_src " + src_info + " " + abc_script;
std::string command = "abc -map_src " + src_info + " " + abc_script;
log(" Executing: %s\n", command.c_str());
log_flush();
Pass::call(design, command);
} else {
std::string command = "abc -map_src " + src_info+ src_info + " -script " + abc_script;
std::string command = "abc -map_src " + src_info + src_info + " -script " + abc_script;
log(" Executing: %s\n", command.c_str());
log_flush();
Pass::call(design, command);
}
}
}
}
}