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Extend latch policy.

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nella 2026-07-24 10:53:40 +02:00 • committed by nella
parent affceca7df
commit 9f0a8ae8aa
5 changed files with 44 additions and 12 deletions
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10
passes/cmds/check.cc
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@ -143,10 +143,9 @@ struct CheckPass : public Pass {
// latch-only mode only flags latches, skipping the (potentially false-positive mid-flow) undriven/driver/loop checks below
if (latchonly) {
for (auto cell : module->cells())
if ((
if (!cell->get_bool_attribute(ID::always_latch) && (
cell->type.in(ID($dlatch), ID($adlatch), ID($dlatchsr)) ||
cell->type.begins_with("$_DLATCH_") || cell->type.begins_with("$_DLATCHSR_")
) && !cell->get_bool_attribute(ID::always_latch)) {
cell->type.begins_with("$_DLATCH_") || cell->type.begins_with("$_DLATCHSR_"))) {
log_warning("Cell %s.%s is a latch of type %s.\n", module, cell, cell->type.unescape());
counter++;
}
@ -299,10 +298,9 @@ struct CheckPass : public Pass {
}
if (
nolatches && (
nolatches && !cell->get_bool_attribute(ID::always_latch) && (
cell->type.in(ID($dlatch), ID($adlatch), ID($dlatchsr)) ||
cell->type.begins_with("$_DLATCH_") || cell->type.begins_with("$_DLATCHSR_")) &&
!cell->get_bool_attribute(ID::always_latch)
cell->type.begins_with("$_DLATCH_") || cell->type.begins_with("$_DLATCHSR_"))
) {
log_warning("Cell %s.%s is a latch of type %s.\n", module, cell, cell->type.unescape());
counter++;