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power leakage 

Signed-off-by: James Cherry <cherry@parallaxsw.com>
This commit is contained in:
James Cherry 2022-11-23 11:52:43 -08:00
parent 314bc1a4d0
commit 305d0dee5c
1 changed files with 21 additions and 14 deletions
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35
power/Power.cc
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@ -938,8 +938,9 @@ Power::findLeakagePower(const Instance *,
LibertyCell *corner_cell = cell->cornerCell(corner, MinMax::max());
float cond_leakage = 0.0;
bool found_cond = false;
float default_leakage = 0.0;
bool found_default = false;
float uncond_leakage = 0.0;
bool found_uncond = false;
float cond_duty_sum = 0.0;
for (LeakagePower *leak : *corner_cell->leakagePowers()) {
FuncExpr *when = leak->when();
if (when) {
@ -956,32 +957,38 @@ Power::findLeakagePower(const Instance *,
leak->power(),
duty);
cond_leakage += leak->power() * duty;
if (leak->power() > 0.0)
cond_duty_sum += duty;
found_cond = true;
}
else {
debugPrint(debug_, "power", 2, "leakage default %s %.3e",
debugPrint(debug_, "power", 2, "leakage -- %s %.3e",
cell->name(),
leak->power());
default_leakage += leak->power();
found_default = true;
uncond_leakage += leak->power();
found_uncond = true;
}
}
float leakage = 0.0;
float cell_leakage;
bool cell_leakage_exists;
cell->leakagePower(cell_leakage, cell_leakage_exists);
if (cell_leakage_exists)
debugPrint(debug_, "power", 2, "leakage cell %s %.3e",
if (cell_leakage_exists) {
float duty = 1.0 - cond_duty_sum;
debugPrint(debug_, "power", 2, "leakage cell %s %.3e * %.2f",
cell->name(),
cell_leakage);
// Ignore default leakages unless there are no conditional leakage groups.
cell_leakage,
duty);
cell_leakage *= duty;
}
// Ignore unconditional leakage unless there are no conditional leakage groups.
if (found_cond)
leakage = cond_leakage;
else if (found_default)
leakage = default_leakage;
else if (cell_leakage_exists)
leakage = cell_leakage;
debugPrint(debug_, "power", 2, "leakage cell %s %.3e",
else if (found_uncond)
leakage = uncond_leakage;
if (cell_leakage_exists)
leakage += cell_leakage;
debugPrint(debug_, "power", 2, "leakage %s %.3e",
cell->name(),
leakage);
result.leakage() += leakage;