aboutsummaryrefslogtreecommitdiffstats
path: root/backends
diff options
context:
space:
mode:
Diffstat (limited to 'backends')
-rw-r--r--backends/smt2/smt2.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/backends/smt2/smt2.cc b/backends/smt2/smt2.cc
index 1e00ac718..a544aa7d8 100644
--- a/backends/smt2/smt2.cc
+++ b/backends/smt2/smt2.cc
@@ -496,6 +496,8 @@ struct Smt2Worker
decls.push_back(stringf("; yosys-smt2-output %s %d\n", log_id(wire), wire->width));
if (is_register)
decls.push_back(stringf("; yosys-smt2-register %s %d\n", log_id(wire), wire->width));
+ if (wire->get_bool_attribute("\\keep"))
+ decls.push_back(stringf("; yosys-smt2-wire %s %d\n", log_id(wire), wire->width));
if (bvmode && GetSize(sig) > 1) {
decls.push_back(stringf("(define-fun |%s_n %s| ((state |%s_s|)) (_ BitVec %d) %s)\n",
log_id(module), log_id(wire), log_id(module), GetSize(sig), get_bv(sig).c_str()));