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cxxrtl: don't mark buffered internal wires as UNUSED for debug.

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Public wires may alias buffered internal wires, so keep BUFFERED
wires in debug information even if they are private. Debug items are
only created for public wires, so this does not otherwise affect how
debug information is emitted.

Fixes #2540.
Fixes #2841.
This commit is contained in:
whitequark 2021-07-16 07:36:18 +00:00
parent c17e385e35
commit 44a3d924ce
1 changed files with 1 additions and 1 deletions
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2
backends/cxxrtl/cxxrtl_backend.cc
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@ -2795,7 +2795,7 @@ struct CxxrtlWorker {
const auto &wire_type = wire_types[wire];
auto &debug_wire_type = debug_wire_types[wire];
if (wire_type.type == WireType::UNUSED) continue;
if (!wire->name.isPublic()) continue;
if (!wire->name.isPublic() && !wire_type.is_buffered()) continue;
if (!debug_info) continue;
if (wire->port_input || wire_type.is_buffered())