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ArcDelayCalc::reduceSupported() 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2024-06-28 10:04:45 -07:00
parent d408599b2d
commit 828616fc12
7 changed files with 12 additions and 1 deletions
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2
dcalc/CcsCeffDelayCalc.hh
View File

@ -36,7 +36,7 @@ public:
virtual ~CcsCeffDelayCalc();
ArcDelayCalc *copy() override;
const char *name() const override { return "ccs_ceff"; }
bool reduceSupported() const override { return true; }
ArcDcalcResult gateDelay(const Pin *drvr_pin,
const TimingArc *arc,
const Slew &in_slew,

1
dcalc/CcsSimDelayCalc.hh
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@ -59,6 +59,7 @@ public:
Parasitic *findParasitic(const Pin *drvr_pin,
const RiseFall *rf,
const DcalcAnalysisPt *dcalc_ap) override;
bool reduceSupported() const override { return false; }
Parasitic *reduceParasitic(const Parasitic *parasitic_network,
const Pin *drvr_pin,
const RiseFall *rf,

1
dcalc/DmpCeff.hh
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@ -34,6 +34,7 @@ class DmpCeffDelayCalc : public LumpedCapDelayCalc
public:
DmpCeffDelayCalc(StaState *sta);
virtual ~DmpCeffDelayCalc();
bool reduceSupported() const override { return true; }
ArcDcalcResult gateDelay(const Pin *drvr_pin,
const TimingArc *arc,
const Slew &in_slew,

1
dcalc/LumpedCapDelayCalc.hh
View File

@ -31,6 +31,7 @@ public:
Parasitic *findParasitic(const Pin *drvr_pin,
const RiseFall *rf,
const DcalcAnalysisPt *dcalc_ap) override;
bool reduceSupported() const override { return true; }
Parasitic *reduceParasitic(const Parasitic *parasitic_network,
const Pin *drvr_pin,
const RiseFall *rf,

1
dcalc/UnitDelayCalc.hh
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@ -30,6 +30,7 @@ public:
Parasitic *findParasitic(const Pin *drvr_pin,
const RiseFall *rf,
const DcalcAnalysisPt *dcalc_ap) override;
bool reduceSupported() const override { return false; }
Parasitic *reduceParasitic(const Parasitic *parasitic_network,
const Pin *drvr_pin,
const RiseFall *rf,

1
include/sta/ArcDelayCalc.hh
View File

@ -166,6 +166,7 @@ public:
virtual Parasitic *findParasitic(const Pin *drvr_pin,
const RiseFall *rf,
const DcalcAnalysisPt *dcalc_ap) = 0;
virtual bool reduceSupported() const = 0;
// Reduce parasitic_network to a representation acceptable to the delay calculator.
virtual Parasitic *reduceParasitic(const Parasitic *parasitic_network,
const Pin *drvr_pin,

6
parasitics/SpefReader.cc
View File

@ -55,6 +55,12 @@ readSpefFile(const char *filename,
StaState *sta)
{
bool success = false;
const ArcDelayCalc *arc_delay_calc = sta->arcDelayCalc();
if (reduce && !arc_delay_calc->reduceSupported()) {
sta->report()->warn(1658, "Delay calculator %s does not support reduction.",
arc_delay_calc->name());
reduce = false;
}
// Use zlib to uncompress gzip'd files automagically.
gzFile stream = gzopen(filename, "rb");
if (stream) {