Overriding a parameter that does not exist will only generate a warning at
the moment. This can hide programming mistakes such as an typo in a
parameter override.
There is nothing in the LRMs to support that this should only be warning,
so elevate this to an error. This is consistent with how an error is
generated when trying to reference a non-existing port or variable.
The generated error message differentiates between whether the parameter
does not exist at all, or whether it is a localparam.
There are two regression tests that rely on that only a warning is
generated, these have been updated to expect an error.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Lars-Peter Clausen