topdown/copypropagation: only update call bindings when output is cap… #3691
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…tured updateBindings before checked if the last operand was a variable, and attempted to replace it if it was. With `neq(s & set(), s)`, the last operand was a variable, but not the output variable -- the output wasn't captured. So now, we use the arity of the called function to determine if we can replace a call. Fixes open-policy-agent#3071. Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
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…tured
updateBindings before checked if the last operand was a variable, and attempted to
replace it if it was. With
neq(s & set(), s), the last operand was a variable,but not the output variable -- the output wasn't captured.
So now, we use the arity of the called function to determine if we can replace a
call.
Fixes #3071.