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back.rtlil: don't emit wires for empty signals.

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Fixes #312.
This commit is contained in:
whitequark 2020-01-31 03:38:58 +00:00
parent b72c3fc7f6
commit 3ac13eb8f9
1 changed files with 3 additions and 0 deletions
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3
nmigen/back/rtlil.py
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@ -278,6 +278,9 @@ class _ValueCompilerState:
self.ports[signal] = (len(self.ports), kind) self.ports[signal] = (len(self.ports), kind)
def resolve(self, signal, prefix=None): def resolve(self, signal, prefix=None):
if len(signal) == 0:
return "{ }", "{ }"
if signal in self.wires: if signal in self.wires:
return self.wires[signal] return self.wires[signal]