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-rw-r--r--backends/cxxrtl/cxxrtl_backend.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/backends/cxxrtl/cxxrtl_backend.cc b/backends/cxxrtl/cxxrtl_backend.cc
index cfb099d59..d7402087f 100644
--- a/backends/cxxrtl/cxxrtl_backend.cc
+++ b/backends/cxxrtl/cxxrtl_backend.cc
@@ -1233,7 +1233,9 @@ struct CxxrtlWorker {
RTLIL::Memory *memory = cell->module->memories[cell->getParam(ID::MEMID).decode_string()];
std::string valid_index_temp = fresh_temporary();
f << indent << "auto " << valid_index_temp << " = memory_index(";
- dump_sigspec_rhs(cell->getPort(ID::ADDR));
+ // Almost all non-elidable cells cannot appear in debug_eval(), but $memrd is an exception; asynchronous
+ // memory read ports can.
+ dump_sigspec_rhs(cell->getPort(ID::ADDR), for_debug);
f << ", " << memory->start_offset << ", " << memory->size << ");\n";
if (cell->type == ID($memrd)) {
bool has_enable = cell->getParam(ID::CLK_ENABLE).as_bool() && !cell->getPort(ID::EN).is_fully_ones();