thanks David,
this points another problem...
cheers,
~d
On Tuesday 14 January 2003 12:37, David Brown wrote:
> > David,
> > I thought I made all indecis computing via shifts/adds.
> > Can you gimme an example when array/struct index being computed via
> > multiplication?
>
> No, this was just a general warning. I haven't noticed anything other than
> inline shift/adds for array indexing with msp430-gcc, but I presumed that
> if hw multiplication would be the most efficient method of calculation, you
> would use it (although that would probably imply an array of very large
> structures of a very awkward size). However, I've seen this sort of thing
> before with other compilers - multiplies turn up in array calculations, so
> I suggest caution when using the -mhwmul-no-int flag.
>
> mvh.
>
> David
>
> > Cheers,
> > ~d
> >
> > On Tuesday 14 January 2003 12:00, David Brown wrote:
> > > faster. Remember that other code, such as array index calculations,
>
> could
>
> > > use the hardware multiplier, so if you are using this flag it may make
> > > sense to compile modules containing interrupt code with the flag
> > > (-mdisable-hwmul) that disables the hardware multiplier entirely.
> >
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