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back.rtlil: remove useless condition. NFC.

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This commit is contained in:
whitequark 2018-12-22 07:24:15 +00:00
parent ae0cb48fbb
commit d29929912f
1 changed files with 9 additions and 10 deletions
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19
nmigen/back/rtlil.py
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@ -538,16 +538,15 @@ class _StatementCompiler(xfrm.AbstractStatementTransformer):
self._case = old_case
def on_Assign(self, stmt):
if isinstance(stmt, ast.Assign):
lhs_bits, lhs_sign = stmt.lhs.shape()
rhs_bits, rhs_sign = stmt.rhs.shape()
if lhs_bits == rhs_bits:
rhs_sigspec = self.rhs_compiler(stmt.rhs)
else:
# In RTLIL, LHS and RHS of assignment must have exactly same width.
rhs_sigspec = self.rhs_compiler.match_shape(
stmt.rhs, lhs_bits, rhs_sign)
self._case.assign(self.lhs_compiler(stmt.lhs), rhs_sigspec)
lhs_bits, lhs_sign = stmt.lhs.shape()
rhs_bits, rhs_sign = stmt.rhs.shape()
if lhs_bits == rhs_bits:
rhs_sigspec = self.rhs_compiler(stmt.rhs)
else:
# In RTLIL, LHS and RHS of assignment must have exactly same width.
rhs_sigspec = self.rhs_compiler.match_shape(
stmt.rhs, lhs_bits, rhs_sign)
self._case.assign(self.lhs_compiler(stmt.lhs), rhs_sigspec)
def on_Switch(self, stmt):
with self._case.switch(self.rhs_compiler(stmt.test)) as switch: