Wouter van Ooijen wrote:
> for instance: there should be an integer type that is at least
> 0..255, but maps to the 'best' machine type. This could be a byte on a
> PIC, but on an ARM probably a 32-bit word.

This is something I added to my source to source translator long ago.  After
reading the back end configuration file that defines what the target
processor and language can do, it creates various data type symbols.  For
the Pascal input language it creates a set of data types called
SYS_INT_CONVxx_T, where XX is the minimum bits you need in an integer.  This
then maps to the integer of at least that size that is most convenient from
the target system's point of view.  What you are asking for above is exactly
my SYS_INT_CONV8_T.  There are also other data types, like SYS_INT_MINxx_T
which map to the smallest target integer at least xx bits wide.


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