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OpenSTA/search/ReportPath.cc

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// OpenSTA, Static Timing Analyzer
// Copyright (c) 2025, Parallax Software, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//
// The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software.
//
// Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
//
// This notice may not be removed or altered from any source distribution.
#include <algorithm> // reverse
#include "ReportPath.hh"
#include "Report.hh"
#include "Error.hh"
#include "StringUtil.hh"
#include "Fuzzy.hh"
#include "Units.hh"
#include "TimingRole.hh"
#include "Transition.hh"
#include "TimingArc.hh"
#include "Liberty.hh"
#include "PortDirection.hh"
#include "Network.hh"
#include "Graph.hh"
#include "PortDelay.hh"
#include "ExceptionPath.hh"
#include "InputDrive.hh"
#include "Sdc.hh"
#include "Parasitics.hh"
#include "DcalcAnalysisPt.hh"
#include "ArcDelayCalc.hh"
#include "GraphDelayCalc.hh"
#include "ClkInfo.hh"
#include "Tag.hh"
#include "PathAnalysisPt.hh"
#include "PathGroup.hh"
#include "CheckMinPulseWidths.hh"
#include "CheckMinPeriods.hh"
#include "CheckMaxSkews.hh"
#include "Path.hh"
#include "Search.hh"
#include "PathExpanded.hh"
#include "Latches.hh"
#include "Corner.hh"
#include "Genclks.hh"
namespace sta {
static void
hierPinsAbove(const Net *net,
const Network *network,
PinSeq &pins_above);
static void
hierPinsAbove(const Pin *pin,
const Network *network,
PinSeq &pins_above);
static PinSeq
hierPinsThruEdge(const Edge *edge,
const Network *network,
const Graph *graph);
ReportField::ReportField(const char *name,
const char *title,
int width,
bool left_justify,
Unit *unit,
bool enabled) :
name_(name),
title_(stringCopy(title)),
left_justify_(left_justify),
unit_(unit),
enabled_(enabled),
blank_(nullptr)
{
setWidth(width);
}
ReportField::~ReportField()
{
stringDelete(title_);
stringDelete(blank_);
}
void
ReportField::setProperties(const char *title,
int width,
bool left_justify)
{
if (title_)
stringDelete(title_);
title_ = stringCopy(title);
left_justify_ = left_justify;
setWidth(width);
}
void
ReportField::setWidth(int width)
{
width_ = width;
if (blank_)
stringDelete(blank_);
blank_ = new char[width_ + 1];
int i;
for (i = 0; i < width_; i++)
blank_[i] = ' ';
blank_[i] = '\0';
}
void
ReportField::setEnabled(bool enabled)
{
enabled_ = enabled;
}
////////////////////////////////////////////////////////////////
const float ReportPath::field_blank_ = -1.0;
ReportPath::ReportPath(StaState *sta) :
StaState(sta),
format_(ReportPathFormat::full),
no_split_(false),
report_sigmas_(false),
start_end_pt_width_(80),
plus_zero_(nullptr),
minus_zero_(nullptr)
{
setDigits(2);
makeFields();
setReportFields(false, false, false, false, false, false, false);
}
ReportPath::~ReportPath()
{
delete field_description_;
delete field_total_;
delete field_incr_;
delete field_capacitance_;
delete field_slew_;
delete field_fanout_;
delete field_src_attr_;
delete field_edge_;
delete field_case_;
stringDelete(plus_zero_);
stringDelete(minus_zero_);
}
void
ReportPath::makeFields()
{
field_fanout_ = makeField("fanout", "Fanout", 6, false, nullptr, true);
field_capacitance_ = makeField("capacitance", "Cap", 6, false,
units_->capacitanceUnit(), true);
field_slew_ = makeField("slew", "Slew", 6, false, units_->timeUnit(),
true);
field_incr_ = makeField("incr", "Delay", 6, false, units_->timeUnit(),
true);
field_total_ = makeField("total", "Time", 6, false, units_->timeUnit(),
true);
field_edge_ = makeField("edge", "", 1, false, nullptr, true);
field_case_ = makeField("case", "case", 11, false, nullptr, false);
field_description_ = makeField("description", "Description", 36,
true, nullptr, true);
field_src_attr_ = makeField("src_attr", "Src Attr", 40,
true, nullptr, true);
}
ReportField *
ReportPath::makeField(const char *name,
const char *title,
int width,
bool left_justify,
Unit *unit,
bool enabled)
{
ReportField *field = new ReportField(name, title, width, left_justify,
unit, enabled);
fields_.push_back(field);
return field;
}
ReportField *
ReportPath::findField(const char *name) const
{
for (ReportField *field : fields_) {
if (stringEq(name, field->name()))
return field;
}
return nullptr;
}
void
ReportPath::setReportFieldOrder(StringSeq *field_names)
{
// Disable all fields.
ReportFieldSeq::Iterator field_iter1(fields_);
while (field_iter1.hasNext()) {
ReportField *field = field_iter1.next();
field->setEnabled(false);
}
ReportFieldSeq next_fields;
for (const char *field_name : *field_names) {
ReportField *field = findField(field_name);
if (field) {
next_fields.push_back(field);
field->setEnabled(true);
}
}
// Push remaining disabled fields on the end.
for (ReportField *field : fields_) {
if (!field->enabled())
next_fields.push_back(field);
}
fields_.clear();
for (ReportField *field : next_fields)
fields_.push_back(field);
}
void
ReportPath::setReportFields(bool report_input_pin,
bool report_hier_pins,
bool report_net,
bool report_cap,
bool report_slew,
bool report_fanout,
bool report_src_attr)
{
report_input_pin_ = report_input_pin;
report_hier_pins_ = report_hier_pins;
report_net_ = report_net;
field_capacitance_->setEnabled(report_cap);
field_slew_->setEnabled(report_slew);
field_fanout_->setEnabled(report_fanout);
field_src_attr_->setEnabled(report_src_attr);
// for debug
field_case_->setEnabled(false);
}
void
ReportPath::setPathFormat(ReportPathFormat format)
{
format_ = format;
}
void
ReportPath::setNoSplit(bool no_split)
{
no_split_ = no_split;
}
void
ReportPath::setDigits(int digits)
{
digits_ = digits;
stringDelete(plus_zero_);
stringDelete(minus_zero_);
minus_zero_ = stringPrint("-%.*f", digits_, 0.0);
plus_zero_ = stringPrint("%.*f", digits_, 0.0);
}
void
ReportPath::setReportSigmas(bool report)
{
report_sigmas_ = report;
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportPathEnd(const PathEnd *end) const
{
reportPathEnd(end, nullptr, true);
}
void
ReportPath::reportPathEnd(const PathEnd *end,
const PathEnd *prev_end,
bool last) const
{
switch (format_) {
case ReportPathFormat::full:
case ReportPathFormat::full_clock:
case ReportPathFormat::full_clock_expanded:
end->reportFull(this);
reportBlankLine();
reportBlankLine();
break;
case ReportPathFormat::shorter:
end->reportShort(this);
reportBlankLine();
reportBlankLine();
break;
case ReportPathFormat::endpoint:
reportEndpointHeader(end, prev_end);
reportEndLine(end);
break;
case ReportPathFormat::summary:
reportSummaryLine(end);
break;
case ReportPathFormat::slack_only:
reportSlackOnly(end);
break;
case ReportPathFormat::json:
reportJson(end, last);
break;
}
}
void
ReportPath::reportPathEnds(const PathEndSeq *ends) const
{
reportPathEndHeader();
if (ends && !ends->empty()) {
PathEnd *prev_end = nullptr;
PathEndSeq::ConstIterator end_iter(ends);
while (end_iter.hasNext()) {
PathEnd *end = end_iter.next();
reportPathEnd(end, prev_end, !end_iter.hasNext());
prev_end = end;
}
}
else {
if (format_ != ReportPathFormat::json)
report_->reportLine("No paths found.");
}
reportPathEndFooter();
}
void
ReportPath::reportPathEndHeader() const
{
switch (format_) {
case ReportPathFormat::full:
case ReportPathFormat::full_clock:
case ReportPathFormat::full_clock_expanded:
case ReportPathFormat::shorter:
case ReportPathFormat::endpoint:
break;
case ReportPathFormat::summary:
reportSummaryHeader();
break;
case ReportPathFormat::slack_only:
reportSlackOnlyHeader();
break;
case ReportPathFormat::json:
reportJsonHeader();
break;
}
}
void
ReportPath::reportPathEndFooter() const
{
string header;
switch (format_) {
case ReportPathFormat::full:
case ReportPathFormat::full_clock:
case ReportPathFormat::full_clock_expanded:
case ReportPathFormat::shorter:
break;
case ReportPathFormat::endpoint:
case ReportPathFormat::summary:
case ReportPathFormat::slack_only:
reportBlankLine();
break;
case ReportPathFormat::json:
reportJsonFooter();
break;
}
}
void
ReportPath::reportEndpointHeader(const PathEnd *end,
const PathEnd *prev_end) const
{
PathGroup *prev_group = nullptr;
if (prev_end)
prev_group = search_->pathGroup(prev_end);
PathGroup *group = search_->pathGroup(end);
if (group && group != prev_group) {
if (prev_group)
reportBlankLine();
const char *setup_hold = (end->minMax(this) == MinMax::min())
? "min_delay/hold"
: "max_delay/setup";
report_->reportLine("%s group %s",
setup_hold,
group->name());
reportBlankLine();
reportEndHeader();
}
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndUnconstrained *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndUnconstrained *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportUnclockedEndpoint(end, "internal pin");
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndUnconstrained *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
reportBlankLine();
reportPath(end, expanded);
reportLine("data arrival time", end->dataArrivalTimeOffset(this),
end->pathEarlyLate(this));
reportDashLine();
report_->reportLine("(Path is unconstrained)");
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndCheck *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndCheck *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportEndpoint(end);
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndCheck *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
reportSrcPathArrival(end, expanded);
reportTgtClk(end);
reportRequired(end, checkRoleString(end));
reportSlack(end);
}
string
ReportPath::checkRoleString(const PathEnd *end) const
{
const char *check_role = end->checkRole(this)->asString();
return stdstrPrint("library %s time", check_role);
}
void
ReportPath::reportEndpoint(const PathEndCheck *end) const
{
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *inst_name = cmd_network_->pathName(inst);
string clk_name = tgtClkName(end);
const char *rise_fall = asRisingFalling(end->targetClkEndTrans(this));
const TimingRole *check_role = end->checkRole(this);
const TimingRole *check_generic_role = check_role->genericRole();
if (check_role == TimingRole::recovery()
|| check_role == TimingRole::removal()) {
const char *check_role_name = check_role->asString();
auto reason = stdstrPrint("%s check against %s-edge clock %s",
check_role_name,
rise_fall,
clk_name.c_str());
reportEndpoint(inst_name, reason);
}
else if (check_generic_role == TimingRole::setup()
|| check_generic_role == TimingRole::hold()) {
LibertyCell *cell = network_->libertyCell(inst);
if (cell->isClockGate()) {
auto reason = stdstrPrint("%s clock gating-check end-point clocked by %s",
rise_fall, clk_name.c_str());
reportEndpoint(inst_name, reason);
}
else {
const char *reg_desc = clkRegLatchDesc(end);
auto reason = stdstrPrint("%s clocked by %s", reg_desc, clk_name.c_str());
reportEndpoint(inst_name, reason);
}
}
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndLatchCheck *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndLatchCheck *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportEndpoint(end);
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndLatchCheck *end) const
{
PathExpanded expanded(end->path(), this);
const EarlyLate *early_late = end->pathEarlyLate(this);
reportShort(end, expanded);
reportBlankLine();
PathDelay *path_delay = end->pathDelay();
bool ignore_clk_latency = path_delay && path_delay->ignoreClkLatency();
if (ignore_clk_latency) {
// Based on reportSrcPath.
reportPathHeader();
reportPath3(end->path(), expanded, false, false, 0.0,
end->sourceClkOffset(this));
}
else
reportSrcPath(end, expanded);
reportLine("data arrival time", end->dataArrivalTimeOffset(this), early_late);
reportBlankLine();
Required req_time;
Arrival borrow, adjusted_data_arrival, time_given_to_startpoint;
end->latchRequired(this, req_time, borrow, adjusted_data_arrival,
time_given_to_startpoint);
// Adjust required to requiredTimeOffset.
req_time += end->sourceClkOffset(this);
if (path_delay) {
float delay = path_delay->delay();
reportLine("max_delay", delay, delay, early_late);
if (!ignore_clk_latency) {
if (reportClkPath()
&& isPropagated(end->targetClkPath()))
reportTgtClk(end, delay);
else {
Delay delay1(delay);
reportCommonClkPessimism(end, delay1);
}
}
}
else
reportTgtClk(end);
if (delayGreaterEqual(borrow, 0.0, this))
reportLine("time borrowed from endpoint", borrow, req_time, early_late);
else
reportLine("time given to endpoint", borrow, req_time, early_late);
reportLine("data required time", req_time, early_late);
reportDashLine();
reportSlack(end);
if (end->checkGenericRole(this) == TimingRole::setup()
&& !ignore_clk_latency) {
reportBlankLine();
reportBorrowing(end, borrow, time_given_to_startpoint);
}
}
void
ReportPath::reportEndpoint(const PathEndLatchCheck *end) const
{
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *inst_name = cmd_network_->pathName(inst);
string clk_name = tgtClkName(end);
const char *reg_desc = latchDesc(end);
auto reason = stdstrPrint("%s clocked by %s", reg_desc, clk_name.c_str());
reportEndpoint(inst_name, reason);
}
const char *
ReportPath::latchDesc(const PathEndLatchCheck *end) const
{
TimingArc *check_arc = end->checkArc();
const RiseFall *en_rf = check_arc->fromEdge()->asRiseFall()->opposite();
return latchDesc(en_rf);
}
void
ReportPath::reportBorrowing(const PathEndLatchCheck *end,
Arrival &borrow,
Arrival &time_given_to_startpoint) const
{
Delay open_latency, latency_diff, max_borrow;
float nom_pulse_width, open_uncertainty;
Crpr open_crpr, crpr_diff;
bool borrow_limit_exists;
const EarlyLate *early_late = EarlyLate::late();
end->latchBorrowInfo(this, nom_pulse_width, open_latency, latency_diff,
open_uncertainty, open_crpr, crpr_diff,
max_borrow, borrow_limit_exists);
report_->reportLine("Time Borrowing Information");
reportDashLineTotal();
if (borrow_limit_exists)
reportLineTotal("user max time borrow", max_borrow, early_late);
else {
string tgt_clk_name = tgtClkName(end);
Arrival tgt_clk_width = end->targetClkWidth(this);
const Path *tgt_clk_path = end->targetClkPath();
if (tgt_clk_path->clkInfo(search_)->isPropagated()) {
auto width_msg = stdstrPrint("%s nominal pulse width", tgt_clk_name.c_str());
reportLineTotal(width_msg.c_str(), nom_pulse_width, early_late);
if (!delayZero(latency_diff))
reportLineTotalMinus("clock latency difference", latency_diff, early_late);
}
else {
auto width_msg = stdstrPrint("%s pulse width", tgt_clk_name.c_str());
reportLineTotal(width_msg.c_str(), tgt_clk_width, early_late);
}
ArcDelay margin = end->margin(this);
reportLineTotalMinus("library setup time", margin, early_late);
reportDashLineTotal();
if (!delayZero(crpr_diff))
reportLineTotalMinus("CRPR difference", crpr_diff, early_late);
reportLineTotal("max time borrow", max_borrow, early_late);
}
if (delayGreater(borrow, delay_zero, this)
&& (!fuzzyZero(open_uncertainty)
|| !delayZero(open_crpr))) {
reportDashLineTotal();
reportLineTotal("actual time borrow", borrow, early_late);
if (!fuzzyZero(open_uncertainty))
reportLineTotal("open edge uncertainty", open_uncertainty, early_late);
if (!delayZero(open_crpr))
reportLineTotal("open edge CRPR", open_crpr, early_late);
reportDashLineTotal();
reportLineTotal("time given to startpoint", time_given_to_startpoint, early_late);
}
else
reportLineTotal("actual time borrow", borrow, early_late);
reportDashLineTotal();
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndPathDelay *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndPathDelay *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
if (end->targetClk(this))
reportEndpoint(end);
else
reportUnclockedEndpoint(end, "internal path endpoint");
reportGroup(end);
}
void
ReportPath::reportEndpoint(const PathEndPathDelay *end) const
{
if (end->hasOutputDelay())
reportEndpointOutputDelay(end);
else {
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *inst_name = cmd_network_->pathName(inst);
string clk_name = tgtClkName(end);
const char *reg_desc = clkRegLatchDesc(end);
auto reason = stdstrPrint("%s clocked by %s", reg_desc, clk_name.c_str());
reportEndpoint(inst_name, reason);
}
}
void
ReportPath::reportFull(const PathEndPathDelay *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
const EarlyLate *early_late = end->pathEarlyLate(this);
// Based on reportSrcPathArrival.
reportBlankLine();
PathDelay *path_delay = end->pathDelay();
if (end->ignoreClkLatency(this)) {
// Based on reportSrcPath.
reportPathHeader();
reportPath3(end->path(), expanded, false, false, 0.0,
end->sourceClkOffset(this));
}
else
reportSrcPath(end, expanded);
reportLine("data arrival time", end->dataArrivalTimeOffset(this), early_late);
reportBlankLine();
ArcDelay margin = end->margin(this);
MinMax *min_max = path_delay->minMax()->asMinMax();
if (min_max == MinMax::max())
margin = -margin;
const char *min_max_str = min_max->asString();
auto delay_msg = stdstrPrint("%s_delay", min_max_str);
float delay = path_delay->delay();
reportLine(delay_msg.c_str(), delay, delay, early_late);
if (!path_delay->ignoreClkLatency()) {
const Clock *tgt_clk = end->targetClk(this);
if (tgt_clk) {
const Path *tgt_clk_path = end->targetClkPath();
if (reportClkPath()
&& isPropagated(tgt_clk_path, tgt_clk))
reportTgtClk(end, delay, 0.0, true);
else {
Arrival tgt_clk_delay = end->targetClkDelay(this);
Arrival tgt_clk_arrival = delay + tgt_clk_delay;
if (!delayZero(tgt_clk_delay))
reportLine(clkNetworkDelayIdealProp(isPropagated(tgt_clk_path)),
tgt_clk_delay, tgt_clk_arrival, early_late);
reportClkUncertainty(end, tgt_clk_arrival);
reportCommonClkPessimism(end, tgt_clk_arrival);
}
}
}
if (end->pathDelayMarginIsExternal())
reportRequired(end, "output external delay");
else
reportRequired(end, checkRoleString(end));
reportSlack(end);
}
bool
ReportPath::isPropagated(const Path *clk_path) const
{
return clk_path->clkInfo(search_)->isPropagated();
}
bool
ReportPath::isPropagated(const Path *clk_path,
const Clock *clk) const
{
if (clk_path)
return clk_path->clkInfo(search_)->isPropagated();
else
return clk->isPropagated();
}
const char *
ReportPath::clkNetworkDelayIdealProp(bool is_prop) const
{
if (is_prop)
return "clock network delay (propagated)";
else
return "clock network delay (ideal)";
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndOutputDelay *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndOutputDelay *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportEndpoint(end);
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndOutputDelay *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
reportSrcPathArrival(end, expanded);
reportTgtClk(end);
reportRequired(end, "output external delay");
reportSlack(end);
}
void
ReportPath::reportEndpoint(const PathEndOutputDelay *end) const
{
reportEndpointOutputDelay(end);
}
void
ReportPath::reportEndpointOutputDelay(const PathEndClkConstrained *end) const
{
Vertex *vertex = end->vertex(this);
Pin *pin = vertex->pin();
const char *pin_name = cmd_network_->pathName(pin);
const Clock *tgt_clk = end->targetClk(this);
if (network_->isTopLevelPort(pin)) {
// Pin direction is "output" even for bidirects.
if (tgt_clk) {
string clk_name = tgtClkName(end);
auto reason = stdstrPrint("output port clocked by %s", clk_name.c_str());
reportEndpoint(pin_name, reason);
}
else
reportEndpoint(pin_name, "output port");
}
else {
if (tgt_clk) {
string clk_name = tgtClkName(end);
auto reason = stdstrPrint("internal path endpoint clocked by %s",
clk_name.c_str());
reportEndpoint(pin_name, reason);
}
else
reportEndpoint(pin_name, "internal path endpoint");
}
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndGatedClock *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndGatedClock *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportEndpoint(end);
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndGatedClock *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
reportSrcPathArrival(end, expanded);
reportTgtClk(end);
reportRequired(end, checkRoleReason(end));
reportSlack(end);
}
void
ReportPath::reportEndpoint(const PathEndGatedClock *end) const
{
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *inst_name = cmd_network_->pathName(inst);
string clk_name = tgtClkName(end);
const RiseFall *clk_end_rf = end->targetClkEndTrans(this);
const RiseFall *clk_rf =
(end->minMax(this) == MinMax::max()) ? clk_end_rf : clk_end_rf->opposite();
const char *rise_fall = asRisingFalling(clk_rf);
// Note that target clock transition is ignored.
auto reason = stdstrPrint("%s clock gating-check end-point clocked by %s",
rise_fall,
clk_name.c_str());
reportEndpoint(inst_name, reason);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportShort(const PathEndDataCheck *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
}
void
ReportPath::reportShort(const PathEndDataCheck *end,
const PathExpanded &expanded) const
{
reportStartpoint(end, expanded);
reportEndpoint(end);
reportGroup(end);
}
void
ReportPath::reportFull(const PathEndDataCheck *end) const
{
PathExpanded expanded(end->path(), this);
reportShort(end, expanded);
reportSrcPathArrival(end, expanded);
// Data check target clock path reporting resembles
// both source (reportSrcPath) and target (reportTgtClk) clocks.
// It is like a source because it can be a non-clock path.
// It is like a target because crpr and uncertainty are reported.
// It is always propagated, even if the clock is ideal.
reportTgtClk(end, 0.0, true);
const Path *data_clk_path = end->dataClkPath();
if (!data_clk_path->isClock(this)) {
// Report the path from the clk network to the data check.
PathExpanded clk_expanded(data_clk_path, this);
float src_offset = end->sourceClkOffset(this);
Delay clk_delay = end->targetClkDelay(this);
Arrival clk_arrival = end->targetClkArrival(this);
const ClockEdge *tgt_clk_edge = end->targetClkEdge(this);
float prev = delayAsFloat(clk_arrival) + src_offset;
float offset = prev - delayAsFloat(clk_delay) - tgt_clk_edge->time();
reportPath5(data_clk_path, clk_expanded, clk_expanded.startIndex(),
clk_expanded.size() - 1,
data_clk_path->clkInfo(search_)->isPropagated(), false,
// Delay to startpoint is already included.
prev, offset);
}
reportRequired(end, checkRoleReason(end));
reportSlack(end);
}
void
ReportPath::reportEndpoint(const PathEndDataCheck *end) const
{
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *inst_name = cmd_network_->pathName(inst);
const char *tgt_clk_rf = asRisingFalling(end->dataClkPath()->transition(this));
const char *tgt_clk_name = end->targetClk(this)->name();
auto reason = stdstrPrint("%s edge-triggered data to data check clocked by %s",
tgt_clk_rf,
tgt_clk_name);
reportEndpoint(inst_name, reason);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportEndHeader() const
{
string line;
// Line one.
reportDescription("", line);
line += ' ';
reportField("Required", field_total_, line);
line += ' ';
reportField("Actual", field_total_, line);
report_->reportLineString(line);
// Line two.
line.clear();
reportDescription("Endpoint", line);
line += ' ';
reportField("Delay", field_total_, line);
line += ' ';
reportField("Delay", field_total_, line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field_total_->width() * 3 + 3);
}
void
ReportPath::reportEndLine(const PathEnd *end) const
{
string line;
string endpoint = pathEndpoint(end);
reportDescription(endpoint.c_str(), line);
const EarlyLate *early_late = end->pathEarlyLate(this);
reportSpaceFieldDelay(end->requiredTimeOffset(this), early_late, line);
reportSpaceFieldDelay(end->dataArrivalTimeOffset(this), early_late, line);
reportSpaceSlack(end, line);
report_->reportLineString(line);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportSummaryHeader() const
{
string line;
reportDescription("Startpoint", line);
line += ' ';
reportDescription("Endpoint", line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() * 2 + field_total_->width() + 1);
}
void
ReportPath::reportSummaryLine(const PathEnd *end) const
{
string line;
PathExpanded expanded(end->path(), this);
const EarlyLate *early_late = end->pathEarlyLate(this);
auto startpoint = pathStartpoint(end, expanded);
reportDescription(startpoint.c_str(), line);
line += ' ';
auto endpoint = pathEndpoint(end);
reportDescription(endpoint.c_str(), line);
if (end->isUnconstrained())
reportSpaceFieldDelay(end->dataArrivalTimeOffset(this), early_late, line);
else
reportSpaceFieldDelay(end->slack(this), EarlyLate::early(), line);
report_->reportLineString(line);
}
string
ReportPath::pathStartpoint(const PathEnd *end,
const PathExpanded &expanded) const
{
const Path *start = expanded.startPath();
Pin *pin = start->pin(graph_);
const char *pin_name = cmd_network_->pathName(pin);
if (network_->isTopLevelPort(pin)) {
PortDirection *dir = network_->direction(pin);
return stdstrPrint("%s (%s)", pin_name, dir->name());
}
else {
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *cell_name = cmd_network_->name(network_->cell(inst));
return stdstrPrint("%s (%s)", pin_name, cell_name);
}
}
string
ReportPath::pathEndpoint(const PathEnd *end) const
{
Pin *pin = end->vertex(this)->pin();
const char *pin_name = cmd_network_->pathName(pin);
if (network_->isTopLevelPort(pin)) {
PortDirection *dir = network_->direction(pin);
return stdstrPrint("%s (%s)", pin_name, dir->name());
}
else {
Instance *inst = network_->instance(end->vertex(this)->pin());
const char *cell_name = cmd_network_->name(network_->cell(inst));
return stdstrPrint("%s (%s)", pin_name, cell_name);
}
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportJsonHeader() const
{
report_->reportLine("{\"checks\": [");
}
void
ReportPath::reportJsonFooter() const
{
report_->reportLine("]");
report_->reportLine("}");
}
void
ReportPath::reportJson(const PathEnd *end,
bool last) const
{
string result;
result += "{\n";
stringAppend(result, " \"type\": \"%s\",\n", end->typeName());
stringAppend(result, " \"path_group\": \"%s\",\n",
search_->pathGroup(end)->name());
stringAppend(result, " \"path_type\": \"%s\",\n",
end->minMax(this)->asString());
PathExpanded expanded(end->path(), this);
const Pin *startpoint = expanded.startPath()->vertex(this)->pin();
const Pin *endpoint = expanded.endPath()->vertex(this)->pin();
stringAppend(result, " \"startpoint\": \"%s\",\n",
sdc_network_->pathName(startpoint));
stringAppend(result, " \"endpoint\": \"%s\",\n",
sdc_network_->pathName(endpoint));
const ClockEdge *src_clk_edge = end->sourceClkEdge(this);
const Path *tgt_clk_path = end->targetClkPath();
if (src_clk_edge) {
stringAppend(result, " \"source_clock\": \"%s\",\n",
src_clk_edge->clock()->name());
stringAppend(result, " \"source_clock_edge\": \"%s\",\n",
src_clk_edge->transition()->name());
}
reportJson(expanded, "source_path", 2, !end->isUnconstrained(), result);
const ClockEdge *tgt_clk_edge = end->targetClkEdge(this);
if (tgt_clk_edge) {
stringAppend(result, " \"target_clock\": \"%s\",\n",
tgt_clk_edge->clock()->name());
stringAppend(result, " \"target_clock_edge\": \"%s\",\n",
tgt_clk_edge->transition()->name());
}
if (tgt_clk_path)
reportJson(end->targetClkPath(), "target_clock_path", 2, true, result);
if (end->checkRole(this)) {
stringAppend(result, " \"data_arrival_time\": %.3e,\n",
delayAsFloat(end->dataArrivalTimeOffset(this)));
const MultiCyclePath *mcp = end->multiCyclePath();
if (mcp)
stringAppend(result, " \"multi_cycle_path\": %d,\n",
mcp->pathMultiplier());
PathDelay *path_delay = end->pathDelay();
if (path_delay)
stringAppend(result, " \"path_delay\": %.3e,\n",
path_delay->delay());
stringAppend(result, " \"crpr\": %.3e,\n",
delayAsFloat(end->checkCrpr(this)));
stringAppend(result, " \"margin\": %.3e,\n",
delayAsFloat(end->margin(this)));
stringAppend(result, " \"required_time\": %.3e,\n",
delayAsFloat(end->requiredTimeOffset(this)));
stringAppend(result, " \"slack\": %.3e\n",
delayAsFloat(end->slack(this)));
}
result += "}";
if (!last)
result += ",";
report_->reportLineString(result);
}
void
ReportPath::reportJson(const Path *path) const
{
string result;
result += "{\n";
reportJson(path, "path", 0, false, result);
result += "}\n";
report_->reportLineString(result);
}
void
ReportPath::reportJson(const Path *path,
const char *path_name,
int indent,
bool trailing_comma,
string &result) const
{
PathExpanded expanded(path, this);
reportJson(expanded, path_name, indent, trailing_comma, result);
}
void
ReportPath::reportJson(const PathExpanded &expanded,
const char *path_name,
int indent,
bool trailing_comma,
string &result) const
{
stringAppend(result, "%*s\"%s\": [\n", indent, "", path_name);
for (size_t i = 0; i < expanded.size(); i++) {
const Path *path = expanded.path(i);
const Pin *pin = path->vertex(this)->pin();
const Net *net = network_->net(pin);
const Instance *inst = network_->instance(pin);
const RiseFall *rf = path->transition(this);
DcalcAnalysisPt *dcalc_ap = path->pathAnalysisPt(this)->dcalcAnalysisPt();
bool is_driver = network_->isDriver(pin);
stringAppend(result, "%*s {\n", indent, "");
if (inst) {
stringAppend(result, "%*s \"instance\": \"%s\",\n",
indent, "",
sdc_network_->pathName(inst));
Cell *cell = network_->cell(inst);
if (cell)
stringAppend(result, "%*s \"cell\": \"%s\",\n",
indent, "",
sdc_network_->name(cell));
stringAppend(result, "%*s \"verilog_src\": \"%s\",\n",
indent, "",
sdc_network_->getAttribute(inst, "src").c_str());
}
stringAppend(result, "%*s \"pin\": \"%s\",\n",
indent, "",
sdc_network_->pathName(pin));
if (net) {
stringAppend(result, "%*s \"net\": \"%s\",\n",
indent, "",
sdc_network_->pathName(net));
}
PinSeq pins_above;
hierPinsAbove(pin, network_, pins_above);
if (!pins_above.empty()) {
stringAppend(result, "%*s \"hier_pins\": [\n", indent, "");
for (const Pin *hpin : pins_above) {
stringAppend(result, "%*s \"%s\"%s\n",
indent, "",
sdc_network_->pathName(hpin),
(hpin != pins_above.back()) ? "," : "");
}
stringAppend(result, "%*s ],\n", indent, "");
}
double x, y;
bool exists;
network_->location(pin, x, y, exists);
if (exists) {
stringAppend(result, "%*s \"x\": %.9f,\n", indent, "", x);
stringAppend(result, "%*s \"y\": %.9f,\n", indent, "", y);
}
stringAppend(result, "%*s \"arrival\": %.3e,\n",
indent, "",
delayAsFloat(path->arrival()));
if (is_driver)
stringAppend(result, "%*s \"capacitance\": %.3e,\n",
indent, "",
graph_delay_calc_->loadCap(pin, rf, dcalc_ap));
stringAppend(result, "%*s \"slew\": %.3e\n",
indent, "",
delayAsFloat(path->slew(this)));
stringAppend(result, "%*s }%s\n",
indent, "",
(i < expanded.size() - 1) ? "," : "");
}
stringAppend(result, "%*s]%s\n",
indent, "",
trailing_comma ? "," : "");
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportSlackOnlyHeader() const
{
string line;
reportDescription("Group", line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field_total_->width() + 1);
}
void
ReportPath::reportSlackOnly(const PathEnd *end) const
{
string line;
const EarlyLate *early_late = end->pathEarlyLate(this);
reportDescription(search_->pathGroup(end)->name(), line);
if (end->isUnconstrained())
reportSpaceFieldDelay(end->dataArrivalTimeOffset(this), early_late, line);
else
reportSpaceFieldDelay(end->slack(this), early_late, line);
report_->reportLineString(line);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportMpwCheck(const MinPulseWidthCheck *check,
bool verbose) const
{
if (verbose) {
reportVerbose(check);
reportBlankLine();
}
else {
reportMpwHeaderShort();
reportShort(check);
}
reportBlankLine();
}
void
ReportPath::reportMpwChecks(const MinPulseWidthCheckSeq *checks,
bool verbose) const
{
if (!checks->empty()) {
if (verbose) {
for (const MinPulseWidthCheck *check : *checks) {
reportVerbose(check);
reportBlankLine();
}
}
else {
reportMpwHeaderShort();
for (const MinPulseWidthCheck *check : *checks)
reportShort(check);
}
reportBlankLine();
}
}
void
ReportPath::reportMpwHeaderShort() const
{
string line;
reportDescription("", line);
line += ' ';
reportField("Required", field_total_, line);
line += ' ';
reportField("Actual", field_total_, line);
report_->reportLineString(line);
line.clear();
reportDescription("Pin", line);
line += ' ';
reportField("Width", field_total_, line);
line += ' ';
reportField("Width", field_total_, line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field_total_->width() * 3 + 3);
}
void
ReportPath::reportShort(const MinPulseWidthCheck *check) const
{
string line;
const char *pin_name = cmd_network_->pathName(check->pin(this));
const char *hi_low = mpwCheckHiLow(check);
auto what = stdstrPrint("%s (%s)", pin_name, hi_low);
reportDescription(what.c_str(), line);
reportSpaceFieldTime(check->minWidth(this), line);
reportSpaceFieldDelay(check->width(this), EarlyLate::late(), line);
reportSpaceSlack(check->slack(this), line);
report_->reportLineString(line);
}
void
ReportPath::reportVerbose(const MinPulseWidthCheck *check) const
{
string line;
const char *pin_name = cmd_network_->pathName(check->pin(this));
line += "Pin: ";
line += pin_name;
report_->reportLineString(line);
report_->reportLine("Check: sequential_clock_pulse_width");
reportBlankLine();
reportPathHeader();
const EarlyLate *open_el = EarlyLate::late();
const ClockEdge *open_clk_edge = check->openClkEdge(this);
const Clock *open_clk = open_clk_edge->clock();
const char *open_clk_name = open_clk->name();
const char *open_rise_fall = asRiseFall(open_clk_edge->transition());
float open_clk_time = open_clk_edge->time();
auto open_clk_msg = stdstrPrint("clock %s (%s edge)", open_clk_name, open_rise_fall);
reportLine(open_clk_msg.c_str(), open_clk_time, open_clk_time, open_el);
Arrival open_arrival = check->openArrival(this);
bool is_prop = isPropagated(check->openPath());
const char *clk_ideal_prop = clkNetworkDelayIdealProp(is_prop);
reportLine(clk_ideal_prop, check->openDelay(this), open_arrival, open_el);
reportLine(pin_name, delay_zero, open_arrival, open_el);
reportLine("open edge arrival time", open_arrival, open_el);
reportBlankLine();
const EarlyLate *close_el = EarlyLate::late();
const ClockEdge *close_clk_edge = check->closeClkEdge(this);
const Clock *close_clk = close_clk_edge->clock();
const char *close_clk_name = close_clk->name();
const char *close_rise_fall = asRiseFall(close_clk_edge->transition());
float close_offset = check->closeOffset(this);
float close_clk_time = close_clk_edge->time() + close_offset;
auto close_clk_msg = stdstrPrint("clock %s (%s edge)", close_clk_name, close_rise_fall);
reportLine(close_clk_msg.c_str(), close_clk_time, close_clk_time, close_el);
Arrival close_arrival = check->closeArrival(this) + close_offset;
reportLine(clk_ideal_prop, check->closeDelay(this), close_arrival, close_el);
reportLine(pin_name, delay_zero, close_arrival, close_el);
if (sdc_->crprEnabled()) {
Crpr pessimism = check->checkCrpr(this);
close_arrival += pessimism;
reportLine("clock reconvergence pessimism", pessimism, close_arrival, close_el);
}
reportLine("close edge arrival time", close_arrival, close_el);
reportDashLine();
float min_width = check->minWidth(this);
const char *hi_low = mpwCheckHiLow(check);
auto rpw_msg = stdstrPrint("required pulse width (%s)", hi_low);
reportLine(rpw_msg.c_str(), min_width, EarlyLate::early());
reportLine("actual pulse width", check->width(this), EarlyLate::early());
reportDashLine();
reportSlack(check->slack(this));
}
const char *
ReportPath::mpwCheckHiLow(const MinPulseWidthCheck *check) const
{
if (check->openTransition(this) == RiseFall::rise())
return "high";
else
return "low";
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportCheck(const MinPeriodCheck *check,
bool verbose) const
{
if (verbose) {
reportVerbose(check);
reportBlankLine();
}
else {
reportPeriodHeaderShort();
reportShort(check);
}
reportBlankLine();
}
void
ReportPath::reportChecks(const MinPeriodCheckSeq *checks,
bool verbose) const
{
if (!checks->empty()) {
if (verbose) {
for (const MinPeriodCheck *check : *checks) {
reportVerbose(check);
reportBlankLine();
}
}
else {
reportPeriodHeaderShort();
for (const MinPeriodCheck *check : *checks)
reportShort(check);
}
reportBlankLine();
}
}
void
ReportPath::reportPeriodHeaderShort() const
{
string line;
reportDescription("", line);
line += ' ';
reportField("", field_total_, line);
line += ' ';
reportField("Min", field_total_, line);
line += ' ';
reportField("", field_total_, line);
report_->reportLineString(line);
line.clear();
reportDescription("Pin", line);
line += ' ';
reportField("Period", field_total_, line);
line += ' ';
reportField("Period", field_total_, line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field_total_->width() * 3 + 3);
}
void
ReportPath::reportShort(const MinPeriodCheck *check) const
{
string line;
const char *pin_name = cmd_network_->pathName(check->pin());
reportDescription(pin_name, line);
reportSpaceFieldDelay(check->period(), EarlyLate::early(), line);
reportSpaceFieldDelay(check->minPeriod(this), EarlyLate::early(), line);
reportSpaceSlack(check->slack(this), line);
report_->reportLineString(line);
}
void
ReportPath::reportVerbose(const MinPeriodCheck *check) const
{
string line;
const char *pin_name = cmd_network_->pathName(check->pin());
line += "Pin: ";
line += pin_name;
report_->reportLineString(line);
reportLine("period", check->period(), EarlyLate::early());
reportLine("min period", -check->minPeriod(this), EarlyLate::early());
reportDashLine();
reportSlack(check->slack(this));
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportCheck(const MaxSkewCheck *check,
bool verbose) const
{
if (verbose) {
reportVerbose(check);
reportBlankLine();
}
else {
reportMaxSkewHeaderShort();
reportShort(check);
}
reportBlankLine();
}
void
ReportPath::reportChecks(const MaxSkewCheckSeq *checks,
bool verbose) const
{
if (!checks->empty()) {
if (verbose) {
for (const MaxSkewCheck *check : *checks)
reportVerbose(check);
}
else {
reportMaxSkewHeaderShort();
for (const MaxSkewCheck *check : *checks)
reportShort(check);
}
reportBlankLine();
}
}
void
ReportPath::reportMaxSkewHeaderShort() const
{
string line;
reportDescription("", line);
line += ' ';
reportField("Required", field_total_, line);
line += ' ';
reportField("Actual", field_total_, line);
line += ' ';
reportField("", field_total_, line);
report_->reportLineString(line);
line.clear();
reportDescription("Pin", line);
line += ' ';
reportField("Skew", field_total_, line);
line += ' ';
reportField("Skew", field_total_, line);
line += ' ';
reportField("Slack", field_total_, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field_total_->width() * 3 + 3);
}
void
ReportPath::reportShort(const MaxSkewCheck *check) const
{
string line;
Pin *clk_pin = check->clkPin(this);
const char *clk_pin_name = network_->pathName(clk_pin);
TimingArc *check_arc = check->checkArc();
auto what = stdstrPrint("%s (%s->%s)",
clk_pin_name,
check_arc->fromEdge()->asString(),
check_arc->toEdge()->asString());
reportDescription(what.c_str(), line);
const EarlyLate *early_late = EarlyLate::early();
reportSpaceFieldDelay(check->maxSkew(this), early_late, line);
reportSpaceFieldDelay(check->skew(), early_late, line);
reportSpaceSlack(check->slack(this), line);
report_->reportLineString(line);
}
void
ReportPath::reportVerbose(const MaxSkewCheck *check) const
{
string line;
const char *clk_pin_name = cmd_network_->pathName(check->clkPin(this));
line += "Constrained Pin: ";
line += clk_pin_name;
report_->reportLineString(line);
const char *ref_pin_name = cmd_network_->pathName(check->refPin(this));
line = "Reference Pin: ";
line += ref_pin_name;
report_->reportLineString(line);
line = "Check: max_skew";
report_->reportLineString(line);
reportBlankLine();
reportPathHeader();
reportSkewClkPath("reference pin arrival time", check->refPath());
reportSkewClkPath("constrained pin arrival time", check->clkPath());
reportDashLine();
reportLine("allowable skew", check->maxSkew(this), EarlyLate::early());
reportLine("actual skew", check->skew(), EarlyLate::late());
reportDashLine();
reportSlack(check->slack(this));
}
// Based on reportTgtClk.
void
ReportPath::reportSkewClkPath(const char *arrival_msg,
const Path *clk_path) const
{
const ClockEdge *clk_edge = clk_path->clkEdge(this);
const Clock *clk = clk_edge->clock();
const EarlyLate *early_late = clk_path->minMax(this);
const RiseFall *clk_rf = clk_edge->transition();
const RiseFall *clk_end_rf = clk_path->transition(this);
string clk_name = clkName(clk, clk_end_rf != clk_rf);
float clk_time = clk_edge->time();
const Arrival &clk_arrival = search_->clkPathArrival(clk_path);
Arrival clk_delay = clk_arrival - clk_time;
PathAnalysisPt *path_ap = clk_path->pathAnalysisPt(this);
const MinMax *min_max = path_ap->pathMinMax();
Vertex *clk_vertex = clk_path->vertex(this);
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time, min_max);
bool is_prop = isPropagated(clk_path);
if (is_prop && reportClkPath()) {
const EarlyLate *early_late = TimingRole::skew()->tgtClkEarlyLate();
if (reportGenClkSrcPath(clk_path, clk, clk_rf, min_max, early_late))
reportGenClkSrcAndPath(clk_path, clk, clk_rf, early_late, path_ap,
0.0, 0.0, false);
else {
Arrival insertion, latency;
PathEnd::checkTgtClkDelay(clk_path, clk_edge, TimingRole::skew(), this,
insertion, latency);
reportClkSrcLatency(insertion, clk_time, early_late);
PathExpanded clk_expanded(clk_path, this);
reportPath2(clk_path, clk_expanded, false, 0.0);
}
}
else {
reportLine(clkNetworkDelayIdealProp(is_prop), clk_delay, clk_arrival, early_late);
reportLine(descriptionField(clk_vertex).c_str(), clk_arrival,
early_late, clk_end_rf);
}
reportLine(arrival_msg, search_->clkPathArrival(clk_path), early_late);
reportBlankLine();
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportLimitShortHeader(const ReportField *field) const
{
string line;
reportDescription("Pin", line);
line += ' ';
reportField("Limit", field, line);
line += ' ';
reportField(field->title(), field, line);
line += ' ';
reportField("Slack", field, line);
report_->reportLineString(line);
reportDashLine(field_description_->width() + field->width() * 3 + 3);
}
void
ReportPath::reportLimitShort(const ReportField *field,
Pin *pin,
float value,
float limit,
float slack) const
{
string line;
const char *pin_name = cmd_network_->pathName(pin);
reportDescription(pin_name, line);
line += ' ';
reportField(limit, field, line);
line += ' ';
reportField(value, field, line);
line += ' ';
reportField(slack, field, line);
line += (slack >= 0.0)
? " (MET)"
: " (VIOLATED)";
report_->reportLineString(line);
}
void
ReportPath::reportLimitVerbose(const ReportField *field,
Pin *pin,
const RiseFall *rf,
float value,
float limit,
float slack,
const Corner *corner,
const MinMax *min_max) const
{
string line;
line += "Pin ";
line += cmd_network_->pathName(pin);
line += ' ';
if (rf)
line += rf->shortName();
else
line += ' ';
// Don't report corner if the default corner is the only corner.
if (corner && corners_->count() > 1) {
line += " (corner ";
line += corner->name();
line += ")";
}
report_->reportLineString(line);
line = min_max->asString();
line += ' ';
line += field->name();
line += ' ';
reportField(limit, field, line);
report_->reportLineString(line);
line = field->name();
line += " ";
reportField(value, field, line);
report_->reportLineString(line);
int name_width = strlen(field->name()) + 5;
reportDashLine(name_width + field->width());
line = "Slack";
for (int i = strlen("Slack"); i < name_width; i++)
line += ' ';
reportField(slack, field, line);
line += (slack >= 0.0)
? " (MET)"
: " (VIOLATED)";
report_->reportLineString(line);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportStartpoint(const PathEnd *end,
const PathExpanded &expanded) const
{
const Path *path = end->path();
const Path *start = expanded.startPath();
const TimingArc *prev_arc = expanded.startPrevArc();
const Edge *prev_edge = start->prevEdge(this);
const Pin *pin = start->pin(graph_);
const ClockEdge *clk_edge = path->clkEdge(this);
const Clock *clk = path->clock(search_);
const char *pin_name = cmd_network_->pathName(pin);
if (pathFromClkPin(path, pin)) {
const char *clk_name = clk->name();
auto reason = stdstrPrint("clock source '%s'", clk_name);
reportStartpoint(pin_name, reason);
}
else if (network_->isTopLevelPort(pin)) {
if (clk
&& clk != sdc_->defaultArrivalClock()) {
const char *clk_name = clk->name();
// Pin direction is "input" even for bidirects.
auto reason = stdstrPrint("input port clocked by %s", clk_name);
reportStartpoint(pin_name, reason);
}
else
reportStartpoint(pin_name, "input port");
}
else if (network_->isLeaf(pin) && prev_arc) {
Instance *inst = network_->instance(pin);
const char *inst_name = cmd_network_->pathName(inst);
if (clk_edge) {
const RiseFall *clk_rf = clk_edge->transition();
const Path *clk_path = expanded.clkPath();
bool clk_inverted = clk_path
&& clk_rf != clk_path->transition(this);
string clk_name = clkName(clk, clk_inverted);
const char *reg_desc = edgeRegLatchDesc(prev_edge, prev_arc);
auto reason = stdstrPrint("%s clocked by %s", reg_desc, clk_name.c_str());
reportStartpoint(inst_name, reason);
}
else {
const char *reg_desc = edgeRegLatchDesc(prev_edge, prev_arc);
reportStartpoint(inst_name, reg_desc);
}
}
else if (network_->isLeaf(pin)) {
if (clk_edge) {
Clock *clk = clk_edge->clock();
if (clk != sdc_->defaultArrivalClock()) {
const char *clk_name = clk->name();
auto reason = stdstrPrint("internal path startpoint clocked by %s", clk_name);
reportStartpoint(pin_name, reason);
}
else
reportStartpoint(pin_name, "internal path startpoint");
}
else
reportStartpoint(pin_name, "internal pin");
}
else
reportStartpoint(pin_name, "");
}
bool
ReportPath::pathFromClkPin(const PathExpanded &expanded) const
{
const Path *start = expanded.startPath();
const Path *end = expanded.endPath();
const Pin *start_pin = start->pin(graph_);
return pathFromClkPin(end, start_pin);
}
bool
ReportPath::pathFromClkPin(const Path *path,
const Pin *start_pin) const
{
const Clock *clk = path->clock(search_);
return clk
&& clk->leafPins().hasKey(const_cast<Pin*>(start_pin));
}
void
ReportPath::reportStartpoint(const char *start,
const string reason) const
{
reportStartEndPoint(start, reason, "Startpoint");
}
void
ReportPath::reportUnclockedEndpoint(const PathEnd *end,
const char *default_reason) const
{
Vertex *vertex = end->vertex(this);
Pin *pin = vertex->pin();
if (network_->isTopLevelPort(pin)) {
// Pin direction is "output" even for bidirects.
reportEndpoint(cmd_network_->pathName(pin), "output port");
}
else if (network_->isLeaf(pin)) {
VertexInEdgeIterator edge_iter(vertex, graph_);
while (edge_iter.hasNext()) {
Edge *edge = edge_iter.next();
if (edge->role()->genericRole() == TimingRole::setup()) {
Vertex *clk_vertex = edge->from(graph_);
VertexOutEdgeIterator clk_edge_iter(clk_vertex, graph_);
while (clk_edge_iter.hasNext()) {
Edge *clk_edge = clk_edge_iter.next();
if (clk_edge->role() == TimingRole::regClkToQ()) {
Instance *inst = network_->instance(pin);
const char *inst_name = cmd_network_->pathName(inst);
const char *reason = regDesc(clk_edge->timingArcSet()->isRisingFallingEdge());
reportEndpoint(inst_name, reason);
return;
}
if (clk_edge->role() == TimingRole::latchEnToQ()) {
Instance *inst = network_->instance(pin);
const char *inst_name = cmd_network_->pathName(inst);
const char *reason = latchDesc(clk_edge->timingArcSet()->isRisingFallingEdge());
reportEndpoint(inst_name, reason);
return;
}
}
}
}
reportEndpoint(cmd_network_->pathName(pin), default_reason);
}
else
reportEndpoint(cmd_network_->pathName(pin), "");
}
void
ReportPath::reportEndpoint(const char *end,
const string reason) const
{
reportStartEndPoint(end, reason, "Endpoint");
}
void
ReportPath::reportStartEndPoint(const char *pt,
string reason,
const char *key) const
{
string line;
// Account for punctuation in the line.
int line_len = strlen(key) + 2 + strlen(pt) + 2 + reason.size() + 1;
if (!no_split_
&& line_len > start_end_pt_width_) {
line = key;
line += ": ";
line += pt;
report_->reportLineString(line);
line.clear();
for (unsigned i = 0; i < strlen(key); i++)
line += ' ';
line += " (";
line += reason;
line += ")";
report_->reportLineString(line);
}
else {
line = key;
line += ": ";
line += pt;
line += " (";
line += reason;
line += ")";
report_->reportLineString(line);
}
}
void
ReportPath::reportGroup(const PathEnd *end) const
{
string line;
line = "Path Group: ";
PathGroup *group = search_->pathGroup(end);
line += group ? group->name() : "(none)";
report_->reportLineString(line);
line = "Path Type: ";
line += end->minMax(this)->asString();
report_->reportLineString(line);
if (corners_->multiCorner()) {
line = "Corner: ";
line += end->pathAnalysisPt(this)->corner()->name();
report_->reportLineString(line);
}
}
////////////////////////////////////////////////////////////////
string
ReportPath::checkRoleReason(const PathEnd *end) const
{
const char *setup_hold = end->checkRole(this)->asString();
return stdstrPrint("%s time", setup_hold);
}
string
ReportPath::tgtClkName(const PathEnd *end) const
{
const ClockEdge *tgt_clk_edge = end->targetClkEdge(this);
const Clock *tgt_clk = tgt_clk_edge->clock();
const RiseFall *clk_rf = tgt_clk_edge->transition();
const RiseFall *clk_end_rf = end->targetClkEndTrans(this);
return clkName(tgt_clk, clk_end_rf != clk_rf);
}
string
ReportPath::clkName(const Clock *clk,
bool inverted) const
{
string name = clk->name();
if (inverted)
name += '\'';
return name;
}
const char *
ReportPath::clkRegLatchDesc(const PathEnd *end) const
{
// Goofy libraries can have registers with both rising and falling
// clk->q timing arcs. Try and match the timing check transition.
const RiseFall *check_clk_rf=end->checkArc()->fromEdge()->asRiseFall();
TimingArcSet *clk_set = nullptr;
TimingArcSet *clk_rf_set = nullptr;
Vertex *tgt_clk_vertex = end->targetClkPath()->vertex(this);
VertexOutEdgeIterator iter(tgt_clk_vertex, graph_);
while (iter.hasNext()) {
Edge *edge = iter.next();
TimingArcSet *arc_set = edge->timingArcSet();
TimingRole *role = arc_set->role();
if (role == TimingRole::regClkToQ()
|| role == TimingRole::latchEnToQ()) {
const RiseFall *arc_rf = arc_set->isRisingFallingEdge();
clk_set = arc_set;
if (arc_rf == check_clk_rf)
clk_rf_set = arc_set;
}
}
if (clk_rf_set)
return checkRegLatchDesc(clk_rf_set->role(),
clk_rf_set->isRisingFallingEdge());
else if (clk_set)
return checkRegLatchDesc(clk_set->role(),
clk_set->isRisingFallingEdge());
else
return checkRegLatchDesc(TimingRole::regClkToQ(), check_clk_rf);
}
void
ReportPath::reportSrcPathArrival(const PathEnd *end,
const PathExpanded &expanded) const
{
reportBlankLine();
reportSrcPath(end, expanded);
reportLine("data arrival time", end->dataArrivalTimeOffset(this),
end->pathEarlyLate(this));
reportBlankLine();
}
void
ReportPath::reportSrcPath(const PathEnd *end,
const PathExpanded &expanded) const
{
reportPathHeader();
float src_clk_offset = end->sourceClkOffset(this);
Arrival src_clk_insertion = end->sourceClkInsertionDelay(this);
Arrival src_clk_latency = end->sourceClkLatency(this);
const Path *path = end->path();
reportSrcClkAndPath(path, expanded, src_clk_offset, src_clk_insertion,
src_clk_latency, end->isPathDelay());
}
void
ReportPath::reportSrcClkAndPath(const Path *path,
const PathExpanded &expanded,
float time_offset,
Arrival clk_insertion,
Arrival clk_latency,
bool is_path_delay) const
{
const ClockEdge *clk_edge = path->clkEdge(this);
const MinMax *min_max = path->minMax(this);
if (clk_edge) {
Clock *clk = clk_edge->clock();
RiseFall *clk_rf = clk_edge->transition();
float clk_time = clk_edge->time() + time_offset;
if (clk == sdc_->defaultArrivalClock()) {
if (!is_path_delay) {
float clk_end_time = clk_time + time_offset;
const EarlyLate *early_late = min_max;
reportLine("clock (input port clock) (rise edge)",
clk_end_time, clk_end_time, early_late);
reportLine(clkNetworkDelayIdealProp(false), 0.0, clk_end_time, early_late);
}
reportPath1(path, expanded, false, time_offset);
}
else {
bool path_from_input = false;
bool input_has_ref_path = false;
Arrival clk_delay, clk_end_time;
const Path *clk_path = expanded.clkPath();
const RiseFall *clk_end_rf;
if (clk_path) {
clk_end_time = search_->clkPathArrival(clk_path) + time_offset;
clk_delay = clk_end_time - clk_time;
clk_end_rf = clk_path->transition(this);
}
else {
// Path from input port or clk used as data.
clk_end_rf = clk_rf;
clk_delay = clk_insertion + clk_latency;
clk_end_time = clk_time + clk_delay;
const Path *first_path = expanded.startPath();
const InputDelay *input_delay = pathInputDelay(first_path);
if (input_delay) {
path_from_input = true;
const Pin *ref_pin = input_delay->refPin();
if (ref_pin && clk->isPropagated()) {
Path ref_path;
pathInputDelayRefPath(first_path, input_delay, ref_path);
if (!ref_path.isNull()) {
const Arrival &ref_end_time = ref_path.arrival();
clk_delay = ref_end_time - clk_time;
clk_end_time = ref_end_time + time_offset;
input_has_ref_path = true;
}
}
}
}
string clk_name = clkName(clk, clk_rf != clk_end_rf);
bool clk_used_as_data = pathFromClkPin(expanded);
bool is_prop = isPropagated(path);
const EarlyLate *early_late = min_max;
if (reportGenClkSrcPath(clk_path, clk, clk_rf, min_max, early_late)
&& !(path_from_input && !input_has_ref_path)) {
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time,
min_max);
const PathAnalysisPt *path_ap = path->pathAnalysisPt(this);
reportGenClkSrcAndPath(path, clk, clk_rf, early_late, path_ap,
time_offset, time_offset, clk_used_as_data);
}
else if (clk_used_as_data
&& pathFromGenPropClk(path, path->minMax(this))) {
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time, min_max);
ClkInfo *clk_info = path->tag(search_)->clkInfo();
if (clk_info->isPropagated())
reportClkSrcLatency(clk_insertion, clk_time, early_late);
reportPath1(path, expanded, true, time_offset);
}
else if (is_prop
&& reportClkPath()
&& !(path_from_input && !input_has_ref_path)) {
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time, early_late);
reportClkSrcLatency(clk_insertion, clk_time, early_late);
reportPath1(path, expanded, false, time_offset);
}
else if (clk_used_as_data) {
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time, early_late);
if (delayGreater(clk_insertion, 0.0, this))
reportClkSrcLatency(clk_insertion, clk_time, early_late);
if (reportClkPath())
reportPath1(path, expanded, true, time_offset);
else {
Arrival clk_arrival = clk_end_time;
Arrival end_arrival = path->arrival() + time_offset;
Delay clk_delay = end_arrival - clk_arrival;
reportLine("clock network delay", clk_delay,
end_arrival, early_late);
Vertex *end_vertex = path->vertex(this);
reportLine(descriptionField(end_vertex).c_str(),
end_arrival, early_late, clk_end_rf);
}
}
else {
if (is_path_delay) {
if (delayGreater(clk_delay, 0.0, this))
reportLine(clkNetworkDelayIdealProp(is_prop), clk_delay,
clk_end_time, early_late);
}
else {
reportClkLine(clk, clk_name.c_str(), clk_end_rf, clk_time, min_max);
Arrival clk_arrival = clk_end_time;
reportLine(clkNetworkDelayIdealProp(is_prop), clk_delay,
clk_arrival, early_late);
}
reportPath1(path, expanded, false, time_offset);
}
}
}
else
reportPath1(path, expanded, false, time_offset);
}
void
ReportPath::reportTgtClk(const PathEnd *end) const
{
reportTgtClk(end, 0.0);
}
void
ReportPath::reportTgtClk(const PathEnd *end,
float prev_time) const
{
const Clock *clk = end->targetClk(this);
const Path *clk_path = end->targetClkPath();
reportTgtClk(end, prev_time, isPropagated(clk_path, clk));
}
void
ReportPath::reportTgtClk(const PathEnd *end,
float prev_time,
bool is_prop) const
{
float src_offset = end->sourceClkOffset(this);
reportTgtClk(end, prev_time, src_offset, is_prop);
}
void
ReportPath::reportTgtClk(const PathEnd *end,
float prev_time,
float src_offset,
bool is_prop) const
{
const ClockEdge *clk_edge = end->targetClkEdge(this);
Clock *clk = clk_edge->clock();
const RiseFall *clk_rf = clk_edge->transition();
const RiseFall *clk_end_rf = end->targetClkEndTrans(this);
string clk_name = clkName(clk, clk_end_rf != clk_rf);
float clk_time = prev_time
+ end->targetClkTime(this)
+ end->targetClkMcpAdjustment(this)
+ src_offset;
Arrival clk_delay = end->targetClkDelay(this);
Arrival clk_arrival = clk_time + clk_delay;
PathAnalysisPt *path_ap = end->pathAnalysisPt(this)->tgtClkAnalysisPt();
const MinMax *min_max = path_ap->pathMinMax();
const Path *clk_path = end->targetClkPath();
reportClkLine(clk, clk_name.c_str(), clk_end_rf, prev_time, clk_time, min_max);
TimingRole *check_role = end->checkRole(this);
if (is_prop && reportClkPath()) {
float time_offset = prev_time
+ end->targetClkOffset(this)
+ end->targetClkMcpAdjustment(this);
const EarlyLate *early_late = check_role->tgtClkEarlyLate();
if (reportGenClkSrcPath(clk_path, clk, clk_rf, min_max, early_late)) {
float insertion_offset =
clk_path ? tgtClkInsertionOffet(clk_path, early_late, path_ap) : 0.0;
reportGenClkSrcAndPath(clk_path, clk, clk_rf, early_late, path_ap,
time_offset, time_offset + insertion_offset, false);
}
else {
Arrival insertion = end->targetClkInsertionDelay(this);
if (clk_path) {
reportClkSrcLatency(insertion, clk_time, early_late);
PathExpanded clk_expanded(clk_path, this);
float insertion_offset = tgtClkInsertionOffet(clk_path, early_late,
path_ap);
reportPath5(clk_path, clk_expanded, 0, clk_expanded.size() - 1, is_prop,
reportClkPath(), delay_zero, time_offset + insertion_offset);
}
else {
// Output departure.
Arrival clk_arrival = clk_time + clk_delay;
reportLine(clkNetworkDelayIdealProp(clk->isPropagated()),
clk_delay, clk_arrival, min_max);
}
}
reportClkUncertainty(end, clk_arrival);
reportCommonClkPessimism(end, clk_arrival);
}
else {
reportLine(clkNetworkDelayIdealProp(is_prop), clk_delay,
clk_arrival, min_max);
reportClkUncertainty(end, clk_arrival);
reportCommonClkPessimism(end, clk_arrival);
if (clk_path) {
Vertex *clk_vertex = clk_path->vertex(this);
reportLine(descriptionField(clk_vertex).c_str(),
prev_time
+ end->targetClkArrival(this)
+ end->sourceClkOffset(this),
min_max, clk_end_rf);
}
}
}
float
ReportPath::tgtClkInsertionOffet(const Path *clk_path,
const EarlyLate *early_late,
const PathAnalysisPt *path_ap) const
{
ClkInfo *clk_info = clk_path->clkInfo(this);
const Pin *src_pin = clk_info->clkSrc();
const ClockEdge *clk_edge = clk_info->clkEdge();
const Clock *clk = clk_edge->clock();
const RiseFall *clk_rf = clk_edge->transition();
const MinMax *min_max = path_ap->pathMinMax();
Arrival path_insertion = search_->clockInsertion(clk, src_pin, clk_rf,
min_max, min_max,
path_ap);
Arrival tgt_insertion = search_->clockInsertion(clk, src_pin, clk_rf,
min_max, early_late,
path_ap);
return delayAsFloat(tgt_insertion - path_insertion);
}
bool
ReportPath::pathFromGenPropClk(const Path *clk_path,
const EarlyLate *early_late) const
{
ClkInfo *clk_info = clk_path->tag(search_)->clkInfo();
const ClockEdge *clk_edge = clk_info->clkEdge();
if (clk_edge) {
const Clock *clk = clk_edge->clock();
float insertion;
bool exists;
sdc_->clockInsertion(clk, clk_info->clkSrc(),
clk_edge->transition(),
clk_path->minMax(this),
early_late,
insertion, exists);
return !exists
&& clk->isGeneratedWithPropagatedMaster();
}
else
return false;
}
bool
ReportPath::isGenPropClk(const Clock *clk,
const RiseFall *clk_rf,
const MinMax *min_max,
const EarlyLate *early_late) const
{
float insertion;
bool exists;
sdc_->clockInsertion(clk, clk->srcPin(), clk_rf,
min_max, early_late,
insertion, exists);
return !exists
&& clk->isGeneratedWithPropagatedMaster();
}
void
ReportPath::reportClkLine(const Clock *clk,
const char *clk_name,
const RiseFall *clk_rf,
Arrival clk_time,
const MinMax *min_max) const
{
reportClkLine(clk, clk_name, clk_rf, 0.0, clk_time, min_max);
}
void
ReportPath::reportClkLine(const Clock *clk,
const char *clk_name,
const RiseFall *clk_rf,
Arrival prev_time,
Arrival clk_time,
const MinMax *min_max) const
{
const char *rise_fall = asRiseFall(clk_rf);
auto clk_msg = stdstrPrint("clock %s (%s edge)", clk_name, rise_fall);
if (clk->isPropagated())
reportLine(clk_msg.c_str(), clk_time - prev_time, clk_time, min_max);
else {
// Report ideal clock slew.
float clk_slew = clk->slew(clk_rf, min_max);
reportLine(clk_msg.c_str(), clk_slew, clk_time - prev_time, clk_time, min_max);
}
}
bool
ReportPath::reportGenClkSrcPath(const Path *clk_path,
const Clock *clk,
const RiseFall *clk_rf,
const MinMax *min_max,
const EarlyLate *early_late) const
{
bool from_gen_prop_clk = clk_path
? pathFromGenPropClk(clk_path, early_late)
: isGenPropClk(clk, clk_rf, min_max, early_late);
return from_gen_prop_clk
&& format_ == ReportPathFormat::full_clock_expanded;
}
void
ReportPath::reportGenClkSrcAndPath(const Path *path,
const Clock *clk,
const RiseFall *clk_rf,
const EarlyLate *early_late,
const PathAnalysisPt *path_ap,
float time_offset,
float path_time_offset,
bool clk_used_as_data) const
{
const Pin *clk_pin = path
? path->clkInfo(search_)->clkSrc()
: clk->defaultPin();
float gclk_time = clk->edge(clk_rf)->time() + time_offset;
bool skip_first_path = reportGenClkSrcPath1(clk, clk_pin, clk_rf,
early_late, path_ap, gclk_time,
time_offset, clk_used_as_data);
if (path) {
PathExpanded expanded(path, this);
reportPath4(path, expanded, skip_first_path, false, clk_used_as_data,
path_time_offset);
}
}
bool
ReportPath::reportGenClkSrcPath1(const Clock *clk,
const Pin *clk_pin,
const RiseFall *clk_rf,
const EarlyLate *early_late,
const PathAnalysisPt *path_ap,
float gclk_time,
float time_offset,
bool clk_used_as_data) const
{
PathAnalysisPt *insert_ap = path_ap->insertionAnalysisPt(early_late);
const MinMax *min_max = path_ap->pathMinMax();
Path *src_path = search_->genclks()->srcPath(clk, clk_pin,
clk_rf, insert_ap);
if (src_path) {
ClkInfo *src_clk_info = src_path->clkInfo(this);
const ClockEdge *src_clk_edge = src_clk_info->clkEdge();
const Clock *src_clk = src_clk_info->clock();
if (src_clk) {
bool skip_first_path = false;
const RiseFall *src_clk_rf = src_clk_edge->transition();
const Pin *src_clk_pin = src_clk_info->clkSrc();
if (src_clk->isGeneratedWithPropagatedMaster()
&& src_clk_info->isPropagated()) {
skip_first_path = reportGenClkSrcPath1(src_clk, src_clk_pin,
src_clk_rf, early_late, path_ap,
gclk_time, time_offset,
clk_used_as_data);
}
else {
const Arrival insertion = search_->clockInsertion(src_clk, src_clk_pin,
src_clk_rf,
path_ap->pathMinMax(),
early_late, path_ap);
reportClkSrcLatency(insertion, gclk_time, early_late);
}
PathExpanded src_expanded(src_path, this);
reportPath4(src_path, src_expanded, skip_first_path, false,
clk_used_as_data, gclk_time);
if (!clk->isPropagated())
reportLine("clock network delay (ideal)", 0.0,
src_path->arrival(), min_max);
}
}
else {
if (clk->isPropagated())
reportClkSrcLatency(0.0, gclk_time, early_late);
else if (!clk_used_as_data)
reportLine("clock network delay (ideal)", 0.0, gclk_time, min_max);
}
return src_path != nullptr;
}
void
ReportPath::reportClkSrcLatency(Arrival insertion,
float clk_time,
const EarlyLate *early_late) const
{
reportLine("clock source latency", insertion, clk_time + insertion, early_late);
}
void
ReportPath::reportPathLine(const Path *path,
Arrival incr,
Arrival time,
const char *line_case) const
{
Vertex *vertex = path->vertex(this);
Pin *pin = vertex->pin();
const string what = descriptionField(vertex);
const RiseFall *rf = path->transition(this);
bool is_driver = network_->isDriver(pin);
PathAnalysisPt *path_ap = path->pathAnalysisPt(this);
const EarlyLate *early_late = path_ap->pathMinMax();
DcalcAnalysisPt *dcalc_ap = path_ap->dcalcAnalysisPt();
DcalcAPIndex ap_index = dcalc_ap->index();
Slew slew = graph_->slew(vertex, rf, ap_index);
float cap = field_blank_;
Instance *inst = network_->instance(pin);
string src_attr = "";
if (inst)
src_attr = network_->getAttribute(inst, "src");
// Don't show capacitance field for input pins.
if (is_driver && field_capacitance_->enabled())
cap = graph_delay_calc_->loadCap(pin, rf, dcalc_ap);
reportLine(what.c_str(), cap, slew, field_blank_,
incr, time, false, early_late, rf, src_attr,
line_case);
}
void
ReportPath::reportRequired(const PathEnd *end,
string margin_msg) const
{
Required req_time = end->requiredTimeOffset(this);
const EarlyLate *early_late = end->clkEarlyLate(this);
float macro_clk_tree_delay = end->macroClkTreeDelay(this);
ArcDelay margin = end->margin(this);
if (end->minMax(this) == MinMax::min()) {
margin = -margin;
macro_clk_tree_delay = -macro_clk_tree_delay;
}
if (macro_clk_tree_delay != 0.0)
reportLine("macro clock tree delay", -macro_clk_tree_delay,
req_time + margin, early_late);
reportLine(margin_msg.c_str(), -margin, req_time, early_late);
reportLine("data required time", req_time, early_late);
reportDashLine();
}
void
ReportPath::reportSlack(const PathEnd *end) const
{
const EarlyLate *early_late = end->pathEarlyLate(this);
reportLine("data required time", end->requiredTimeOffset(this),
early_late->opposite());
reportLineNegative("data arrival time", end->dataArrivalTimeOffset(this), early_late);
reportDashLine();
reportSlack(end->slack(this));
}
void
ReportPath::reportSlack(Slack slack) const
{
const EarlyLate *early_late = EarlyLate::early();
const char *msg = (delayAsFloat(slack, early_late, this) >= 0.0)
? "slack (MET)"
: "slack (VIOLATED)";
reportLine(msg, slack, early_late);
}
void
ReportPath::reportSpaceSlack(const PathEnd *end,
string &result) const
{
Slack slack = end->slack(this);
reportSpaceSlack(slack, result);
}
void
ReportPath::reportSpaceSlack(Slack slack,
string &result) const
{
const EarlyLate *early_late = EarlyLate::early();
reportSpaceFieldDelay(slack, early_late, result);
result += (delayAsFloat(slack, early_late, this) >= 0.0)
? " (MET)"
: " (VIOLATED)";
}
void
ReportPath::reportCommonClkPessimism(const PathEnd *end,
Arrival &clk_arrival) const
{
if (sdc_->crprEnabled()) {
Crpr pessimism = end->checkCrpr(this);
clk_arrival += pessimism;
reportLine("clock reconvergence pessimism", pessimism, clk_arrival,
end->clkEarlyLate(this));
}
}
void
ReportPath::reportClkUncertainty(const PathEnd *end,
Arrival &clk_arrival) const
{
const EarlyLate *early_late = end->clkEarlyLate(this);
float uncertainty = end->targetNonInterClkUncertainty(this);
clk_arrival += uncertainty;
if (uncertainty != 0.0)
reportLine("clock uncertainty", uncertainty, clk_arrival, early_late);
float inter_uncertainty = end->interClkUncertainty(this);
clk_arrival += inter_uncertainty;
if (inter_uncertainty != 0.0)
reportLine("inter-clock uncertainty", inter_uncertainty,
clk_arrival, early_late);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportPath(const PathEnd *end,
const PathExpanded &expanded) const
{
reportPathHeader();
// Source clk offset for path delays removes clock phase time.
float src_clk_offset = end->sourceClkOffset(this);
reportPath1(end->path(), expanded, pathFromClkPin(expanded), src_clk_offset);
}
void
ReportPath::reportPath(const Path *path) const
{
switch (format_) {
case ReportPathFormat::full:
case ReportPathFormat::full_clock:
case ReportPathFormat::full_clock_expanded:
reportPathFull(path);
break;
case ReportPathFormat::json:
reportJson(path);
break;
case ReportPathFormat::shorter:
case ReportPathFormat::endpoint:
case ReportPathFormat::summary:
case ReportPathFormat::slack_only:
report_->reportLine("Format not supported.");
break;
}
}
void
ReportPath::reportPathFull(const Path *path) const
{
reportPathHeader();
PathExpanded expanded(path, this);
reportSrcClkAndPath(path, expanded, 0.0, delay_zero, delay_zero, false);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportPath1(const Path *path,
const PathExpanded &expanded,
bool clk_used_as_data,
float time_offset) const
{
const Path *d_path, *q_path;
Edge *d_q_edge;
expanded.latchPaths(d_path, q_path, d_q_edge);
if (d_path) {
Arrival latch_time_given, latch_enable_time;
Path *latch_enable_path;
latches_->latchTimeGivenToStartpoint(d_path, q_path, d_q_edge,
latch_time_given, latch_enable_path);
if (latch_enable_path) {
const EarlyLate *early_late = latch_enable_path->minMax(this);
latch_enable_time = search_->clkPathArrival(latch_enable_path);
if (reportClkPath()) {
PathExpanded enable_expanded(latch_enable_path, this);
// Report the path to the latch enable.
reportPath2(latch_enable_path, enable_expanded, false,
time_offset);
}
Arrival time = latch_enable_time + latch_time_given;
Arrival incr = latch_time_given;
if (delayGreaterEqual(incr, 0.0, this))
reportLine("time given to startpoint", incr, time, early_late);
else
reportLine("time borrowed from startpoint", incr, time, early_late);
// Override latch D arrival with enable + given.
reportPathLine(expanded.path(0), delay_zero, time, "latch_D");
bool propagated_clk = path->clkInfo(search_)->isPropagated();
bool report_clk_path = path->isClock(search_) || reportClkPath();
reportPath5(path, expanded, 1, expanded.size() - 1,
propagated_clk, report_clk_path,
latch_enable_time + latch_time_given, time_offset);
}
}
else
reportPath2(path, expanded, clk_used_as_data, time_offset);
}
void
ReportPath::reportPath2(const Path *path,
const PathExpanded &expanded,
bool clk_used_as_data,
float time_offset) const
{
// Report the clock path if the end is a clock or we wouldn't have
// anything to report.
bool report_clk_path = clk_used_as_data
|| (reportClkPath()
&& path->clkInfo(search_)->isPropagated());
reportPath3(path, expanded, clk_used_as_data, report_clk_path,
delay_zero, time_offset);
}
void
ReportPath::reportPath3(const Path *path,
const PathExpanded &expanded,
bool clk_used_as_data,
bool report_clk_path,
Arrival prev_time,
float time_offset) const
{
bool propagated_clk = clk_used_as_data
|| path->clkInfo(search_)->isPropagated();
size_t path_last_index = expanded.size() - 1;
reportPath5(path, expanded, 0, path_last_index, propagated_clk,
report_clk_path, prev_time, time_offset);
}
void
ReportPath::reportPath4(const Path *path,
const PathExpanded &expanded,
bool skip_first_path,
bool skip_last_path,
bool clk_used_as_data,
float time_offset) const
{
size_t path_first_index = 0;
Arrival prev_time(0.0);
if (skip_first_path) {
path_first_index = 1;
const Path *start = expanded.path(0);
prev_time = start->arrival() + time_offset;
}
size_t path_last_index = expanded.size() - 1;
if (skip_last_path
&& path_last_index > 1)
path_last_index--;
bool propagated_clk = clk_used_as_data
|| path->clkInfo(search_)->isPropagated();
// Report the clock path if the end is a clock or we wouldn't have
// anything to report.
bool report_clk_path = path->isClock(search_)
|| (reportClkPath() && propagated_clk);
reportPath5(path, expanded, path_first_index, path_last_index,
propagated_clk, report_clk_path, prev_time, time_offset);
}
void
ReportPath::reportPath5(const Path *path,
const PathExpanded &expanded,
size_t path_first_index,
size_t path_last_index,
bool propagated_clk,
bool report_clk_path,
Arrival prev_time,
float time_offset) const
{
const MinMax *min_max = path->minMax(this);
DcalcAnalysisPt *dcalc_ap = path->pathAnalysisPt(this)->dcalcAnalysisPt();
DcalcAPIndex ap_index = dcalc_ap->index();
const Path *clk_path = expanded.clkPath();
Vertex *clk_start = clk_path ? clk_path->vertex(this) : nullptr;
for (size_t i = path_first_index; i <= path_last_index; i++) {
const Path *path1 = expanded.path(i);
const TimingArc *prev_arc = path1->prevArc(this);
Vertex *vertex = path1->vertex(this);
Pin *pin = vertex->pin();
Arrival time = path1->arrival() + time_offset;
Delay incr = 0.0;
const char *line_case = nullptr;
bool is_clk_start = path1->vertex(this) == clk_start;
bool is_clk = path1->isClock(search_);
Instance *inst = network_->instance(pin);
string src_attr = "";
if (inst)
src_attr = network_->getAttribute(inst, "src");
// Always show the search start point (register clk pin).
// Skip reporting the clk tree unless it is requested.
if (is_clk_start
|| report_clk_path
|| !is_clk) {
const RiseFall *rf = path1->transition(this);
Slew slew = graph_->slew(vertex, rf, ap_index);
if (prev_arc == nullptr) {
// First path.
reportInputExternalDelay(path1, time_offset);
size_t next_index = i + 1;
const Path *next_path = expanded.path(next_index);
if (network_->isTopLevelPort(pin)
&& next_path
&& !nextArcAnnotated(next_path, next_index, expanded, ap_index)
&& hasExtInputDriver(pin, rf, min_max)) {
// Pin is an input port with drive_cell/drive_resistance.
// The delay calculator annotates wire delays on the edges
// from the input to the loads. Report the wire delay on the
// input pin instead.
Arrival next_time = next_path->arrival() + time_offset;
incr = delayIncr(next_time, time, min_max);
time = next_time;
line_case = "input_drive";
}
else if (is_clk) {
if (!propagated_clk)
// Clock latency at path endpoint in case latency was set
// on a clock pin other than the clock source.
time = search_->clkPathArrival(path1) + time_offset;
incr = 0.0;
line_case = "clk_first";
}
else {
incr = 0.0;
line_case = "first";
}
}
else if (is_clk_start
&& is_clk
&& !report_clk_path) {
// Clock start point and clock path are not reported.
incr = 0.0;
if (!propagated_clk) {
// Ideal clock.
const ClockEdge *src_clk_edge = path->clkEdge(this);
time = search_->clkPathArrival(path1) + time_offset;
if (src_clk_edge) {
Clock *src_clk = src_clk_edge->clock();
RiseFall *src_clk_rf = src_clk_edge->transition();
slew = src_clk->slew(src_clk_rf, min_max);
}
}
line_case = "clk_start";
}
else if (is_clk
&& report_clk_path
&& !propagated_clk) {
// Zero the clock network delays for ideal clocks.
incr = 0.0;
time = prev_time;
const ClockEdge *src_clk_edge = path->clkEdge(this);
const Clock *src_clk = src_clk_edge->clock();
RiseFall *src_clk_rf = src_clk_edge->transition();
slew = src_clk->slew(src_clk_rf, min_max);
line_case = "clk_ideal";
}
else if (is_clk && !is_clk_start) {
incr = delayIncr(time, prev_time, min_max);
line_case = "clk_prop";
}
else {
incr = delayIncr(time, prev_time, min_max);
line_case = "normal";
}
if (vertex->isDriver(network_)) {
float cap = field_blank_;
float fanout = field_blank_;
if (field_capacitance_->enabled())
cap = graph_delay_calc_->loadCap(pin, rf, dcalc_ap);
if (field_fanout_->enabled())
fanout = drvrFanout(vertex, dcalc_ap->corner(), min_max);
const string what = descriptionField(vertex);
reportLine(what.c_str(), cap, slew, fanout,
incr, time, false, min_max, rf, src_attr,
line_case);
if (report_net_) {
const string what2 = descriptionNet(pin);
reportLine(what2.c_str(), field_blank_, field_blank_, field_blank_,
field_blank_, field_blank_, false, min_max,
nullptr, src_attr, "");
}
prev_time = time;
}
else {
reportHierPinsThru(path1);
if (report_input_pin_
|| (i == 0)
|| (i == path_last_index)
|| is_clk_start) {
const string what = descriptionField(vertex);
reportLine(what.c_str(), field_blank_, slew, field_blank_,
incr, time, false, min_max, rf, src_attr,
line_case);
prev_time = time;
}
}
}
else
prev_time = time;
}
}
void
ReportPath::reportHierPinsThru(const Path *path) const
{
if (report_hier_pins_) {
const Edge *prev_edge = path->prevEdge(this);
if (prev_edge && prev_edge->isWire()) {
for (const Pin *hpin : hierPinsThruEdge(prev_edge, network_, graph_)) {
const string what = descriptionField(hpin);
reportLine(what.c_str(), field_blank_, field_blank_, field_blank_,
field_blank_, field_blank_, false, path->minMax(this),
nullptr, "", "");
}
}
}
}
Delay
ReportPath::delayIncr(Delay time,
Delay prev,
const MinMax *min_max) const
{
if (report_sigmas_)
return delayRemove(time, prev);
else
return delayAsFloat(time, min_max, this) - delayAsFloat(prev, min_max, this);
}
bool
ReportPath::nextArcAnnotated(const Path *next_path,
size_t next_index,
const PathExpanded &expanded,
DcalcAPIndex ap_index) const
{
const TimingArc *arc = expanded.path(next_index)->prevArc(this);
Edge *edge = next_path->prevEdge(this);
return graph_->arcDelayAnnotated(edge, arc, ap_index);
}
string
ReportPath::descriptionField(const Vertex *vertex) const
{
return descriptionField(vertex->pin());
}
string
ReportPath::descriptionField(const Pin *pin) const
{
const char *pin_name = cmd_network_->pathName(pin);
const char *name2;
if (network_->isTopLevelPort(pin)) {
PortDirection *dir = network_->direction(pin);
// Translate port direction. Note that this is intentionally
// inconsistent with the direction reported for top level ports as
// startpoints.
if (dir->isInput())
name2 = "in";
else if (dir->isOutput() || dir->isTristate())
name2 = "out";
else if (dir->isBidirect())
name2 = "inout";
else
name2 = "?";
}
else {
Instance *inst = network_->instance(pin);
name2 = network_->cellName(inst);
}
return stdstrPrint("%s (%s)", pin_name, name2);
}
string
ReportPath::descriptionNet(const Pin *pin) const
{
if (network_->isTopLevelPort(pin)) {
const char *pin_name = cmd_network_->pathName(pin);
return stdstrPrint("%s (net)", pin_name);
}
else {
Net *net = network_->net(pin);
if (net) {
Net *highest_net = network_->highestNetAbove(net);
const char *net_name = cmd_network_->pathName(highest_net);
return stdstrPrint("%s (net)", net_name);
}
else
return "(unconnected)";
}
}
float
ReportPath::drvrFanout(Vertex *drvr,
const Corner *corner,
const MinMax *min_max) const
{
float fanout = 0.0;
VertexOutEdgeIterator iter(drvr, graph_);
while (iter.hasNext()) {
Edge *edge = iter.next();
if (edge->isWire()) {
Pin *pin = edge->to(graph_)->pin();
if (network_->isTopLevelPort(pin)) {
// Output port counts as a fanout.
Port *port = network_->port(pin);
fanout += sdc_->portExtFanout(port, corner, min_max) + 1;
}
else
fanout++;
}
}
return fanout;
}
bool
ReportPath::hasExtInputDriver(const Pin *pin,
const RiseFall *rf,
const MinMax *min_max) const
{
Port *port = network_->port(pin);
InputDrive *drive = sdc_->findInputDrive(port);
return (drive
&& (drive->hasDriveResistance(rf, min_max)
|| drive->hasDriveCell(rf, min_max)));
}
void
ReportPath::reportInputExternalDelay(const Path *first_path,
float time_offset) const
{
const Pin *first_pin = first_path->pin(graph_);
if (!pathFromClkPin(first_path, first_pin)) {
const RiseFall *rf = first_path->transition(this);
Arrival time = first_path->arrival() + time_offset;
const EarlyLate *early_late = first_path->minMax(this);
InputDelay *input_delay = pathInputDelay(first_path);
if (input_delay) {
const Pin *ref_pin = input_delay->refPin();
if (ref_pin) {
Path ref_path;
pathInputDelayRefPath(first_path, input_delay, ref_path);
if (!ref_path.isNull() && reportClkPath()) {
PathExpanded ref_expanded(&ref_path, this);
reportPath3(&ref_path, ref_expanded, false, true,
delay_zero, 0.0);
}
}
float input_arrival =
input_delay->delays()->value(rf, first_path->minMax(this));
reportLine("input external delay", input_arrival, time,
early_late, rf);
}
else if (network_->isTopLevelPort(first_pin))
reportLine("input external delay", 0.0, time, early_late, rf);
}
}
// Return the input delay at the start of a path.
InputDelay *
ReportPath::pathInputDelay(const Path *first_path) const
{
return first_path->tag(this)->inputDelay();
}
void
ReportPath::pathInputDelayRefPath(const Path *path,
const InputDelay *input_delay,
// Return value.
Path &ref_path) const
{
const Pin *ref_pin = input_delay->refPin();
const RiseFall *ref_rf = input_delay->refTransition();
Vertex *ref_vertex = graph_->pinDrvrVertex(ref_pin);
if (ref_vertex) {
const PathAnalysisPt *path_ap = path->pathAnalysisPt(this);
const ClockEdge *clk_edge = path->clkEdge(this);
VertexPathIterator path_iter(ref_vertex, ref_rf, path_ap, this);
while (path_iter.hasNext()) {
Path *path = path_iter.next();
if (path->isClock(this)
&& path->clkEdge(this) == clk_edge) {
ref_path = path;
break;
}
}
}
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportPathHeader() const
{
string line;
bool first_field = true;
for (const ReportField *field : fields_) {
if (field->enabled()) {
if (!first_field)
line += ' ';
reportField(field->title(), field, line);
first_field = false;
}
}
trimRight(line);
report_->reportLineString(line);
reportDashLine();
}
// Report total.
void
ReportPath::reportLine(const char *what,
Delay total,
const EarlyLate *early_late) const
{
reportLine(what, field_blank_, field_blank_, field_blank_,
field_blank_, total, false, early_late, nullptr,
"", nullptr);
}
// Report negative total.
void
ReportPath::reportLineNegative(const char *what,
Delay total,
const EarlyLate *early_late) const
{
reportLine(what, field_blank_, field_blank_, field_blank_,
field_blank_, total, true, early_late, nullptr,
"", nullptr);
}
// Report total, and transition suffix.
void
ReportPath::reportLine(const char *what,
Delay total,
const EarlyLate *early_late,
const RiseFall *rf) const
{
reportLine(what, field_blank_, field_blank_, field_blank_,
field_blank_, total, false, early_late, rf, "",
nullptr);
}
// Report increment, and total.
void
ReportPath::reportLine(const char *what,
Delay incr,
Delay total,
const EarlyLate *early_late) const
{
reportLine(what, field_blank_, field_blank_, field_blank_,
incr, total, false, early_late, nullptr, "",
nullptr);
}
// Report increment, total, and transition suffix.
void
ReportPath::reportLine(const char *what,
Delay incr,
Delay total,
const EarlyLate *early_late,
const RiseFall *rf) const
{
reportLine(what, field_blank_, field_blank_, field_blank_,
incr, total, false, early_late, rf, "",
nullptr);
}
// Report slew, increment, and total.
void
ReportPath::reportLine(const char *what,
Slew slew,
Delay incr,
Delay total,
const EarlyLate *early_late) const
{
reportLine(what, field_blank_, slew, field_blank_,
incr, total, false, early_late, nullptr,
"", nullptr);
}
void
ReportPath::reportLine(const char *what,
float cap,
Slew slew,
float fanout,
Delay incr,
Delay total,
bool total_with_minus,
const EarlyLate *early_late,
const RiseFall *rf,
string src_attr,
const char *line_case) const
{
string line;
size_t field_index = 0;
bool first_field = true;
for (const ReportField *field : fields_) {
bool last_field = field_index == (fields_.size() - 1);
if (field->enabled()) {
if (!first_field)
line += ' ';
if (field == field_description_)
reportDescription(what, first_field, last_field, line);
else if (field == field_fanout_) {
if (fanout == field_blank_)
reportFieldBlank(field, line);
else
line += stdstrPrint("%*d",
field_fanout_->width(),
static_cast<int>(fanout));
}
else if (field == field_capacitance_)
reportField(cap, field, line);
else if (field == field_slew_)
reportFieldDelay(slew, early_late, field, line);
else if (field == field_incr_)
reportFieldDelay(incr, early_late, field, line);
else if (field == field_total_) {
if (total_with_minus)
reportFieldDelayMinus(total, early_late, field, line);
else
reportFieldDelay(total, early_late, field, line);
}
else if (field == field_edge_) {
if (rf)
reportField(rf->shortName(), field, line);
else
reportFieldBlank(field, line);
}
else if (field == field_src_attr_) {
if (src_attr != "")
reportField(src_attr.c_str(), field, line);
else
reportFieldBlank(field, line);
}
else if (field == field_case_ && line_case)
line += line_case;
first_field = false;
}
field_index++;
}
// Trim trailing spaces and report the line.
string line_stdstr = line;
trimRight(line_stdstr);
report_->reportLineString(line_stdstr.c_str());
}
////////////////////////////////////////////////////////////////
// Only the total field.
void
ReportPath::reportLineTotal(const char *what,
Delay incr,
const EarlyLate *early_late) const
{
reportLineTotal1(what, incr, false, early_late);
}
// Only the total field and always with leading minus sign.
void
ReportPath::reportLineTotalMinus(const char *what,
Delay decr,
const EarlyLate *early_late) const
{
reportLineTotal1(what, decr, true, early_late);
}
void
ReportPath::reportLineTotal1(const char *what,
Delay incr,
bool incr_with_minus,
const EarlyLate *early_late) const
{
string line;
reportDescription(what, line);
line += ' ';
if (incr_with_minus)
reportFieldDelayMinus(incr, early_late, field_total_, line);
else
reportFieldDelay(incr, early_late, field_total_, line);
report_->reportLineString(line);
}
void
ReportPath::reportDashLineTotal() const
{
reportDashLine(field_description_->width() + field_total_->width() + 1);
}
////////////////////////////////////////////////////////////////
void
ReportPath::reportDescription(const char *what,
string &line) const
{
reportDescription(what, false, false, line);
}
void
ReportPath::reportDescription(const char *what,
bool first_field,
bool last_field,
string &line) const
{
line += what;
int length = strlen(what);
if (!no_split_
&& first_field
&& length > field_description_->width()) {
reportBlankLine();
for (int i = 0; i < field_description_->width(); i++)
line += ' ';
}
else if (!last_field) {
for (int i = length; i < field_description_->width(); i++)
line += ' ';
}
}
void
ReportPath::reportFieldTime(float value,
ReportField *field,
string &line) const
{
if (delayAsFloat(value) == field_blank_)
reportFieldBlank(field, line);
else {
const char *str = units_->timeUnit()->asString(value, digits_);
if (stringEq(str, minus_zero_))
// Filter "-0.00" fields.
str = plus_zero_;
reportField(str, field, line);
}
}
void
ReportPath::reportSpaceFieldTime(float value,
string &line) const
{
line += ' ';
reportFieldTime(value, field_total_, line);
}
void
ReportPath::reportSpaceFieldDelay(Delay value,
const EarlyLate *early_late,
string &line) const
{
line += ' ';
reportTotalDelay(value, early_late, line);
}
void
ReportPath::reportTotalDelay(Delay value,
const EarlyLate *early_late,
string &line) const
{
const char *str = delayAsString(value, early_late, this, digits_);
if (stringEq(str, minus_zero_))
// Filter "-0.00" fields.
str = plus_zero_;
reportField(str, field_total_, line);
}
// Total time always with leading minus sign.
void
ReportPath::reportFieldDelayMinus(Delay value,
const EarlyLate *early_late,
const ReportField *field,
string &line) const
{
if (delayAsFloat(value) == field_blank_)
reportFieldBlank(field, line);
else {
const char *str = report_sigmas_
? delayAsString(-value, this, digits_)
// Opposite min/max for negative value.
: delayAsString(-value, early_late->opposite(), this, digits_);
if (stringEq(str, plus_zero_))
// Force leading minus sign.
str = minus_zero_;
reportField(str, field, line);
}
}
void
ReportPath::reportFieldDelay(Delay value,
const EarlyLate *early_late,
const ReportField *field,
string &line) const
{
if (delayAsFloat(value) == field_blank_)
reportFieldBlank(field, line);
else {
const char *str = report_sigmas_
? delayAsString(value, this, digits_)
: delayAsString(value, early_late, this, digits_);
if (stringEq(str, minus_zero_))
// Filter "-0.00" fields.
str = plus_zero_;
reportField(str, field, line);
}
}
void
ReportPath::reportField(float value,
const ReportField *field,
string &line) const
{
if (value == field_blank_)
reportFieldBlank(field, line);
else {
Unit *unit = field->unit();
if (unit) {
const char *value_str = unit->asString(value, digits_);
reportField(value_str, field, line);
}
else {
// fanout
string value_str;
stringPrint(value_str, "%.0f", value);
reportField(value_str.c_str(), field, line);
}
}
}
void
ReportPath::reportField(const char *value,
const ReportField *field,
string &line) const
{
if (field->leftJustify())
line += value;
for (int i = strlen(value); i < field->width(); i++)
line += ' ';
if (!field->leftJustify())
line += value;
}
void
ReportPath::reportFieldBlank(const ReportField *field,
string &line) const
{
line += field->blank();
}
void
ReportPath::reportDashLine() const
{
string line;
for (const ReportField *field : fields_) {
if (field->enabled()) {
for (int i = 0; i < field->width(); i++)
line += '-';
}
}
line += "------";
report_->reportLineString(line);
}
void
ReportPath::reportDashLine(int line_width) const
{
string line;
for (int i = 0; i < line_width; i++)
line += '-';
report_->reportLineString(line);
}
void
ReportPath::reportBlankLine() const
{
report_->reportBlankLine();
}
bool
ReportPath::reportClkPath() const
{
return format_ == ReportPathFormat::full_clock
|| format_ == ReportPathFormat::full_clock_expanded;
}
////////////////////////////////////////////////////////////////
const char *
ReportPath::asRisingFalling(const RiseFall *rf) const
{
if (rf == RiseFall::rise())
return "rising";
else
return "falling";
}
const char *
ReportPath::asRiseFall(const RiseFall *rf) const
{
if (rf == RiseFall::rise())
return "rise";
else
return "fall";
}
// Find the startpoint type from the first path edge.
const char *
ReportPath::edgeRegLatchDesc(const Edge *first_edge,
const TimingArc *first_arc) const
{
TimingRole *role = first_arc->role();
if (role == TimingRole::latchDtoQ()) {
Instance *inst = network_->instance(first_edge->to(graph_)->pin());
LibertyCell *cell = network_->libertyCell(inst);
if (cell) {
const LibertyPort *enable_port;
const FuncExpr *enable_func;
const RiseFall *enable_rf;
cell->latchEnable(first_edge->timingArcSet(),
enable_port, enable_func, enable_rf);
return latchDesc(enable_rf);
}
}
else if (role == TimingRole::regClkToQ())
return regDesc(first_arc->fromEdge()->asRiseFall());
else if (role == TimingRole::latchEnToQ())
return latchDesc(first_arc->fromEdge()->asRiseFall());
// Who knows...
return regDesc(first_arc->fromEdge()->asRiseFall());
}
const char *
ReportPath::checkRegLatchDesc(const TimingRole *role,
const RiseFall *clk_rf) const
{
if (role == TimingRole::regClkToQ())
return regDesc(clk_rf);
else if (role == TimingRole::latchEnToQ()
|| role == TimingRole::latchDtoQ())
return latchDesc(clk_rf);
else
// Default when we don't know better.
return "edge-triggered flip-flop";
}
const char *
ReportPath::regDesc(const RiseFall *clk_rf) const
{
if (clk_rf == RiseFall::rise())
return "rising edge-triggered flip-flop";
else if (clk_rf == RiseFall::fall())
return "falling edge-triggered flip-flop";
else
return "edge-triggered flip-flop";
}
const char *
ReportPath::latchDesc(const RiseFall *clk_rf) const
{
return (clk_rf == RiseFall::rise())
? "positive level-sensitive latch"
: "negative level-sensitive latch";
}
////////////////////////////////////////////////////////////////
static PinSeq
hierPinsThruEdge(const Edge *edge,
const Network *network,
const Graph *graph)
{
const Pin *drvr_pin = edge->from(graph)->pin();
const Pin *load_pin = edge->to(graph)->pin();
PinSeq drvr_hpins;
PinSeq load_hpins;
hierPinsAbove(drvr_pin, network, drvr_hpins);
hierPinsAbove(load_pin, network, load_hpins);
if (drvr_hpins.empty()) {
std::reverse(load_hpins.begin(), load_hpins.end());
return load_hpins;
}
if (load_hpins.empty())
return drvr_hpins;
for (size_t l1 = 0; l1 < load_hpins.size(); l1++) {
const Pin *load_hpin = load_hpins[l1];
const Net *load_net = network->net(load_hpin);
for (size_t d1 = 0; d1 < drvr_hpins.size(); d1++) {
const Pin *drvr_hpin = drvr_hpins[d1];
const Net *drvr_net = network->net(drvr_hpin);
if (load_net == drvr_net) {
PinSeq hpins_thru;
for (size_t d2 = 0; d2 < d1; d2++) {
const Pin *drvr_hpin2 = drvr_hpins[d2];
hpins_thru.push_back(drvr_hpin2);
}
hpins_thru.push_back(drvr_hpin);
hpins_thru.push_back(load_hpin);
for (size_t l2 = 0; l2 < l1; l2++) {
const Pin *load_hpin2 = load_hpins[l2];
hpins_thru.push_back(load_hpin2);
}
return hpins_thru;
}
}
}
return PinSeq();
}
static void
hierPinsAbove(const Pin *pin,
const Network *network,
PinSeq &pins_above)
{
const Net *net = network->net(pin);
hierPinsAbove(net, network, pins_above);
}
static void
hierPinsAbove(const Net *net,
const Network *network,
PinSeq &pins_above)
{
if (net) {
NetTermIterator *term_iter = network->termIterator(net);
while (term_iter->hasNext()) {
const Term *term = term_iter->next();
const Pin *net_pin = network->pin(term);
if (network->isHierarchical(net_pin))
pins_above.push_back(net_pin);
const Net *hpin_net = network->net(net_pin);
if (hpin_net)
hierPinsAbove(hpin_net, network, pins_above);
}
delete term_iter;
}
}
} // namespace
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