When IdString refcounting was expensive, it made sense to pass it by const reference
instead of by value, to avoid refcount churn. Now that IdString is not refcounted,
it's slightly more efficient to pass it by value.
Rename passes/cmds from "General passes" to "Design modification".
More `yosys.h` includes.
cmdref: Split passes/status from passes/cmds
Rename passes/cmds from "General passes" to "Design modification".
More `yosys.h` includes.
o Not all derived methods were marked 'override', but it is a great
feature of C++11 that we should make use of.
o While at it: touched header files got a -*- c++ -*- for emacs to
provide support for that language.
o use YS_OVERRIDE for all override keywords (though we should probably
use the plain keyword going forward now that C++11 is established)