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Search::pathClkPathArrival1 return PathRef

This commit is contained in:
James Cherry 2020-09-26 14:21:45 -07:00
parent b9824b62b2
commit bf3d254fe9
2 changed files with 17 additions and 24 deletions
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4
include/sta/Search.hh
View File

@ -521,9 +521,7 @@ protected:
bool clk_gating_hold); bool clk_gating_hold);
bool matchesFilterTo(Path *path, bool matchesFilterTo(Path *path,
const ClockEdge *to_clk_edge) const; const ClockEdge *to_clk_edge) const;
void pathClkPathArrival1(const Path *path, PathRef pathClkPathArrival1(const Path *path) const;
// Return value.
PathRef &clk_path) const;
//////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////

37
search/Search.cc
View File

@ -2258,24 +2258,22 @@ Search::clkPathArrival(const Path *clk_path,
Arrival Arrival
Search::pathClkPathArrival(const Path *path) const Search::pathClkPathArrival(const Path *path) const
{ {
PathRef src_clk_path; ClkInfo *clk_info = path->clkInfo(this);
pathClkPathArrival1(path, src_clk_path); if (clk_info->isPropagated()) {
if (!src_clk_path.isNull()) PathRef src_clk_path = pathClkPathArrival1(path);
return clkPathArrival(&src_clk_path); if (!src_clk_path.isNull())
else { return clkPathArrival(&src_clk_path);
// Check for input arrival clock.
ClockEdge *clk_edge = path->clkEdge(this);
if (clk_edge)
return clk_edge->time();
} }
// Check for input arrival clock.
ClockEdge *clk_edge = path->clkEdge(this);
if (clk_edge)
return clk_edge->time();
return 0.0; return 0.0;
} }
// PathExpanded::expand() and PathExpanded::clkPath(). // PathExpanded::expand() and PathExpanded::clkPath().
void PathRef
Search::pathClkPathArrival1(const Path *path, Search::pathClkPathArrival1(const Path *path) const
// Return value.
PathRef &clk_path) const
{ {
PathRef p(path); PathRef p(path);
while (!p.isNull()) { while (!p.isNull()) {
@ -2283,28 +2281,25 @@ Search::pathClkPathArrival1(const Path *path,
TimingArc *prev_arc; TimingArc *prev_arc;
p.prevPath(this, prev_path, prev_arc); p.prevPath(this, prev_path, prev_arc);
if (p.isClock(this)) { if (p.isClock(this))
clk_path.init(p); return p;
return;
}
if (prev_arc) { if (prev_arc) {
TimingRole *prev_role = prev_arc->role(); TimingRole *prev_role = prev_arc->role();
if (prev_role == TimingRole::regClkToQ() if (prev_role == TimingRole::regClkToQ()
|| prev_role == TimingRole::latchEnToQ()) { || prev_role == TimingRole::latchEnToQ()) {
p.prevPath(this, prev_path, prev_arc); p.prevPath(this, prev_path, prev_arc);
clk_path.init(prev_path); return prev_path;
return;
} }
else if (prev_role == TimingRole::latchDtoQ()) { else if (prev_role == TimingRole::latchDtoQ()) {
Edge *prev_edge = p.prevEdge(prev_arc, this); Edge *prev_edge = p.prevEdge(prev_arc, this);
PathVertex enable_path; PathVertex enable_path;
latches_->latchEnablePath(&p, prev_edge, enable_path); latches_->latchEnablePath(&p, prev_edge, enable_path);
clk_path.init(enable_path); return enable_path;
return;
} }
} }
p.init(prev_path); p.init(prev_path);
} }
return PathRef();
} }
//////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////