[Libre-soc-bugs] [Bug 753] simulator somehow ends up with SO set even though nothing writes to it

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=753

--- Comment #2 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
" even though nothing writes to it"

something *always* writes to something.  this could have been tracked
down by examining the debug log output, and noting that handle_overflow
in ISACaller is responsible for creating SO.


        # arithmetic overflow can be done by analysing the input and output
        elif len(inputs) >= 2:
            output = outputs[0]

            # OV (64-bit)

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