The vvp_vector8_t constructor and destructor involve memory allocation
so it is best to pass these objects by reference as much as possible.
Also rework the resolver functor to only perform resolution after inputs
are in so that it doesn't get needlessly repeated. This eliminates many
resolve function calls, as well as activations throughout the net.
Also have the islands take more care not to perform resolution if the
inputs aren't really different.
Remove dependencies on vvp_bit4_encoding outside of the vvp_net
core types. The table_functor_s class was the worst offfender and
was barely used, so it is now removed completely. There are a few
opcodes in vhtread.cc that also make vvvp_bit4_t encoding
assumptions (and used casts) and those have been fixed. There
were also various VPI interface functions that are fixed.
The runtime is a vvp runtime engine debug aid that allows for
detailed dump into a debug log. The trace is enabled by setting
the VVP_DEBUG variable and activating specific debug messages
in the vvp source.
Signed-off-by: Stephen Williams <steve@icarus.com>
Stephen Williams
Larry Doolittle
steve