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hdl.ast: remove dead code. NFC.

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See #548.
This commit is contained in:
whitequark 2020-11-21 17:29:55 +00:00
parent c1ed90807b
commit 39ff7203ba
1 changed files with 4 additions and 10 deletions
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14
nmigen/hdl/ast.py
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@ -702,17 +702,11 @@ class Operator(Value):
if self.operator in ("&", "^", "|"): if self.operator in ("&", "^", "|"):
return _bitwise_binary_shape(*op_shapes) return _bitwise_binary_shape(*op_shapes)
if self.operator == "<<": if self.operator == "<<":
if b_signed: assert not b_signed
extra = 2 ** (b_width - 1) - 1 return Shape(a_width + 2 ** b_width - 1, a_signed)
else:
extra = 2 ** (b_width) - 1
return Shape(a_width + extra, a_signed)
if self.operator == ">>": if self.operator == ">>":
if b_signed: assert not b_signed
extra = 2 ** (b_width - 1) return Shape(a_width, a_signed)
else:
extra = 0
return Shape(a_width + extra, a_signed)
elif len(op_shapes) == 3: elif len(op_shapes) == 3:
if self.operator == "m": if self.operator == "m":
s_shape, a_shape, b_shape = op_shapes s_shape, a_shape, b_shape = op_shapes