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-rw-r--r--passes/proc/proc_mux.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/proc/proc_mux.cc b/passes/proc/proc_mux.cc
index 75ca4727..c7121959 100644
--- a/passes/proc/proc_mux.cc
+++ b/passes/proc/proc_mux.cc
@@ -210,7 +210,7 @@ static RTLIL::SigSpec signal_to_mux_tree(RTLIL::Module *mod, RTLIL::CaseRule *cs
{
// detect groups of parallel cases
std::vector<int> pgroups(sw->cases.size());
- if (sw->attributes.count("\\parallel_case") == 0) {
+ if (!sw->get_bool_attribute("\\parallel_case")) {
BitPatternPool pool(sw->signal.width);
bool extra_group_for_next_case = false;
for (size_t i = 0; i < sw->cases.size(); i++) {