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path enum with latches critical error 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2023-07-16 17:49:09 -07:00
parent aefa3c8d9d
commit f95dcbfa30
1 changed files with 12 additions and 13 deletions
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25
search/PathEnum.cc
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@ -497,25 +497,24 @@ PathEnum::makeDiversions(PathEnd *path_end,
Path *before)
{
PathRef path(before);
PathRef prev_path;
TimingArc *prev_arc;
path.prevPath(this, prev_path, prev_arc);
PathEnumFaninVisitor fanin_visitor(path_end, path, unique_pins_, this);
do {
while (prev_arc
// Do not enumerate beyond latch D to Q edges.
// This breaks latch loop paths.
&& prev_arc->role() != TimingRole::latchDtoQ()
// Do not enumerate paths in the clk network.
&& !path.isClock(this)) {
// Fanin visitor does all the work.
// While visiting the fanins the fanin_visitor finds the
// previous path and arc as well as diversions.
PathRef prev_path;
fanin_visitor.visitFaninPathsThru(path.vertex(this),
prev_path.vertex(this), prev_arc);
path.init(prev_path);
path.prevPath(this, prev_path, prev_arc);
if (prev_arc) {
fanin_visitor.visitFaninPathsThru(path.vertex(this),
prev_path.vertex(this), prev_arc);
path.init(prev_path);
}
} while (prev_arc
// Do not enumerate beyond latch D to Q edges.
// This breaks latch loop paths.
&& prev_arc->role() != TimingRole::latchDtoQ()
// Do not enumerate paths in the clk network.
&& !path.isClock(this));
}
}
void