Henrik Gramner authored Jun 09, 2020 and Henrik Gramner committed Jun 23, 2020

Broadcasting a memory operand is binary flag, you either broadcast
or you don't, and there's only a single possible element size for
any given instruction.

The instruction syntax however requires the broadcast semanticts
to be explicitly defined, which is an issue when using macros to
template code for multiple register widhts.

Add some helper defines to alleviate the issue.