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Removed a performance bottleneck (do not invalidate cache that often of inst to shape interaction computation)

This commit is contained in:
Matthias Koefferlein 2022-06-25 20:02:15 +02:00
parent d60b7562ab
commit d8f3c522c9
1 changed files with 29 additions and 9 deletions
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38
src/db/db/dbHierProcessor.cc
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@ -189,12 +189,19 @@ public:
typedef typename Ref::shape_type shape_type;
typedef typename Ref::trans_type ref_trans_type;
shape_reference_translator_with_trans_from_shape_ref (db::Layout *target_layout, const Trans &trans)
: mp_layout (target_layout), m_trans (trans), m_ref_trans (trans), m_bare_trans (Trans (m_ref_trans.inverted ()) * trans)
shape_reference_translator_with_trans_from_shape_ref (db::Layout *target_layout)
: mp_layout (target_layout)
{
// .. nothing yet ..
}
void set_trans (const Trans &trans)
{
m_trans = trans;
m_ref_trans = ref_trans_type (trans);
m_bare_trans = Trans (m_ref_trans.inverted ()) * trans;
}
Ref operator() (const Ref &ref) const
{
typename std::unordered_map<const shape_type *, std::pair<const shape_type *, ref_trans_type> >::const_iterator m = m_cache.find (ref.ptr ());
@ -234,8 +241,8 @@ class shape_reference_translator_with_trans<db::PolygonRef, Trans>
: public shape_reference_translator_with_trans_from_shape_ref<db::PolygonRef, Trans>
{
public:
shape_reference_translator_with_trans (db::Layout *target_layout, const Trans &trans)
: shape_reference_translator_with_trans_from_shape_ref<db::PolygonRef, Trans> (target_layout, trans)
shape_reference_translator_with_trans (db::Layout *target_layout)
: shape_reference_translator_with_trans_from_shape_ref<db::PolygonRef, Trans> (target_layout)
{
// .. nothing yet ..
}
@ -247,12 +254,16 @@ class shape_reference_translator_with_trans
public:
typedef Sh shape_type;
shape_reference_translator_with_trans (db::Layout * /*target_layout*/, const Trans &trans)
: m_trans (trans)
shape_reference_translator_with_trans (db::Layout * /*target_layout*/)
{
// .. nothing yet ..
}
void set_trans (const Trans &trans)
{
m_trans = trans;
}
shape_type operator() (const shape_type &s) const
{
return s.transformed (m_trans);
@ -353,13 +364,20 @@ local_processor_cell_context<TS, TI, TR>::propagate (unsigned int output_layer,
return;
}
db::Layout *subject_layout = 0;
shape_reference_translator_with_trans<TR, db::ICplxTrans> rt (subject_layout);
for (typename std::vector<local_processor_cell_drop<TS, TI, TR> >::const_iterator d = m_drops.begin (); d != m_drops.end (); ++d) {
tl_assert (d->parent_context != 0);
tl_assert (d->parent != 0);
db::Layout *subject_layout = d->parent->layout ();
shape_reference_translator_with_trans<TR, db::ICplxTrans> rt (subject_layout, d->cell_inst);
if (subject_layout != d->parent->layout ()) {
subject_layout = d->parent->layout ();
rt = shape_reference_translator_with_trans<TR, db::ICplxTrans> (subject_layout);
}
rt.set_trans (d->cell_inst);
std::vector<TR> new_refs;
new_refs.reserve (res.size ());
for (typename std::unordered_set<TR>::const_iterator r = res.begin (); r != res.end (); ++r) {
@ -1203,6 +1221,8 @@ private:
db::box_convert <db::CellInst, true> inst_bc (*mp_subject_layout, m_subject_layer);
db::Box rbox = db::box_convert<TI> () (ref);
db::shape_reference_translator_with_trans<TI, db::ICplxTrans> rt (mp_subject_layout);
for (db::CellInstArray::iterator n = inst->begin_touching (safe_box_enlarged (rbox, dist - 1, dist - 1), inst_bc); ! n.at_end (); ++n) {
db::ICplxTrans tn = inst->complex_trans (*n);
@ -1211,7 +1231,7 @@ private:
if (! cbox.empty ()) {
db::ICplxTrans tni = tn.inverted ();
db::shape_reference_translator_with_trans<TI, db::ICplxTrans> rt (mp_subject_layout, tni);
rt.set_trans (tni);
std::set<TI> *shapes = 0;