xscale-elf-gcc and arm-elf-gcc

[Nick Clifton]

Hi Arvind,

> What are the differences in code generated by xscale-elf-gcc and
> arm-elf-gcc?

By default the code generated by xscale-elf-gcc may use instructions
that are part of Intel's XScale extenstions to ARM's instruction set.
By default arm-elf-gcc will not use these extra instructions.

> Does arm-elf-gcc support -mthumb-interwork?

Yes.

> xscale-elf-gcc code seems to be more compact than arm-elf-gcc. What
> enables this?

Presumably the use of the extra, XScale instructions.  Do you have a
specific example in mind ?

Cheers
        Nick