luke
/
OpenSTA
mirror of https://github.com/The-OpenROAD-Project/OpenSTA.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PathEnumFaninVisitor::visitFromToPath rm unneeded if 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2025-05-06 17:10:32 -07:00
parent 9c76de81b5
commit f2f43fcedc
1 changed files with 6 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
search/PathEnum.cc
View File

@ -384,8 +384,8 @@ PathEnumFaninVisitor::visitFromToPath(const Pin *,
Vertex *to_vertex,
const RiseFall *to_rf,
Tag *to_tag,
Arrival &to_arrival,
const MinMax *min_max,
Arrival & /* to_arrival */,
const MinMax * /* min_max */,
const PathAnalysisPt *path_ap)
{
// These paths fanin to before_div_ so we know to_vertex matches.
@ -406,28 +406,17 @@ PathEnumFaninVisitor::visitFromToPath(const Pin *,
// Make the diverted path end to check slack with from_path crpr.
makeDivertedPathEnd(from_path, edge, arc, div_end, after_div_copy);
if (div_end) {
// Only enumerate paths with greater slack.
// fuzz for difference in updatePathHeadDelays and accumulated arrivals.
float fuzz = .001;
float slack_limit = path_end_slack_ > 0
? path_end_slack_ * (1.0 - fuzz)
: path_end_slack_ * (1.0 + fuzz);
if (delayGreaterEqual(div_end->slack(this), slack_limit, this)) {
reportDiversion(edge, arc, from_path);
path_enum_->makeDiversion(div_end, after_div_copy);
visited_fanins_.emplace(from_vertex, arc);
}
else
delete div_end;
}
}
else
debugPrint(debug_, "path_enum", 3, " pruned %s %s",
edge->to_string(this).c_str(),
arc->to_string().c_str());
}
// Only enumerate slower/faster paths.
else if (delayLessEqual(to_arrival, before_div_arrival_, min_max, this)) {
else {
PathEnd *div_end;
Path *after_div_copy;
makeDivertedPathEnd(from_path, edge, arc, div_end, after_div_copy);