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-rw-r--r--passes/proc/proc_dlatch.cc20
1 files changed, 16 insertions, 4 deletions
diff --git a/passes/proc/proc_dlatch.cc b/passes/proc/proc_dlatch.cc
index d9d5dfbed..a0c8351b6 100644
--- a/passes/proc/proc_dlatch.cc
+++ b/passes/proc/proc_dlatch.cc
@@ -349,6 +349,10 @@ void proc_dlatch(proc_dlatch_db_t &db, RTLIL::Process *proc)
continue;
}
+ if (proc->get_bool_attribute(ID(always_ff)))
+ log_error("Found non edge/level sensitive event in always_ff process `%s.%s'.\n",
+ db.module->name.c_str(), proc->name.c_str());
+
for (auto ss : sr->actions)
{
db.sigmap.apply(ss.first);
@@ -383,8 +387,12 @@ void proc_dlatch(proc_dlatch_db_t &db, RTLIL::Process *proc)
int offset = 0;
for (auto chunk : nolatches_bits.first.chunks()) {
SigSpec lhs = chunk, rhs = nolatches_bits.second.extract(offset, chunk.width);
- log("No latch inferred for signal `%s.%s' from process `%s.%s'.\n",
- db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str());
+ if (proc->get_bool_attribute(ID(always_latch)))
+ log_error("No latch inferred for signal `%s.%s' from always_latch process `%s.%s'.\n",
+ db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str());
+ else
+ log("No latch inferred for signal `%s.%s' from process `%s.%s'.\n",
+ db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str());
db.module->connect(lhs, rhs);
offset += chunk.width;
}
@@ -410,8 +418,12 @@ void proc_dlatch(proc_dlatch_db_t &db, RTLIL::Process *proc)
cell->set_src_attribute(src);
db.generated_dlatches.insert(cell);
- log("Latch inferred for signal `%s.%s' from process `%s.%s': %s\n",
- db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str(), log_id(cell));
+ if (proc->get_bool_attribute(ID(always_comb)))
+ log_error("Latch inferred for signal `%s.%s' from always_comb process `%s.%s'.\n",
+ db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str());
+ else
+ log("Latch inferred for signal `%s.%s' from process `%s.%s': %s\n",
+ db.module->name.c_str(), log_signal(lhs), db.module->name.c_str(), proc->name.c_str(), log_id(cell));
}
offset += width;