forked from M-Labs/artiq
compiler.iodelay: always fully fold SToMU and MUToS.
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@ -95,10 +95,6 @@ class Conv(Expr):
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def free_vars(self):
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return self.operand.free_vars()
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def fold(self, vars=None):
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return self.__class__(self.operand.fold(vars),
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ref_period=self.ref_period)
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class MUToS(Conv):
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def __str__(self):
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return "mu->s({})".format(self.operand)
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@ -107,10 +103,11 @@ class MUToS(Conv):
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return self.operand.eval(env) * self.ref_period
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def fold(self, vars=None):
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if isinstance(self.operand, Const):
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return Const(self.operand.value * self.ref_period)
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operand = self.operand.fold(vars)
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if isinstance(operand, Const):
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return Const(operand.value * self.ref_period)
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else:
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return super().fold(vars)
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return MUToS(operand, ref_period=self.ref_period)
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class SToMU(Conv):
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def __str__(self):
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@ -120,10 +117,11 @@ class SToMU(Conv):
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return self.operand.eval(env) / self.ref_period
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def fold(self, vars=None):
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if isinstance(self.operand, Const):
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return Const(self.operand.value / self.ref_period)
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operand = self.operand.fold(vars)
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if isinstance(operand, Const):
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return Const(operand.value / self.ref_period)
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else:
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return super().fold(vars)
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return SToMU(operand, ref_period=self.ref_period)
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class BinOp(Expr):
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def __init__(self, lhs, rhs):
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