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back.rtlil: translate empty slices correctly.

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whitequark 2019-01-02 18:14:29 +00:00
parent f31055a4ef
commit ef1e0b8d55
1 changed files with 3 additions and 1 deletions
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4
nmigen/back/rtlil.py
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@ -319,7 +319,9 @@ class _ValueCompiler(xfrm.ValueVisitor):
return self(value.value)
sigspec = self._prepare_value_for_Slice(value.value)
if value.start + 1 == value.end:
if value.start == value.end:
return "{}"
elif value.start + 1 == value.end:
return "{} [{}]".format(sigspec, value.start)
else:
return "{} [{}:{}]".format(sigspec, value.end - 1, value.start)