Re: Bug in Gcc 2.5.8

[Brad Pickering <wbp@netcom.com>]

On Mon, 21 Nov 1994, Stefan Berndtsson wrote:

> On Mon, 21 Nov 1994, Ulrich Kuehn wrote:
> 
> > Hello!
> > 
> > |>
> > |>Instructions with an address register as the destination *never*
> > |>change the condition register.
> > |>
> > Indeed, I just checked again the literature. Sorry!
> > But then, where is the problem with proc.c? This was basically the
> > difference between the 2.3.3 and 2.5.8 version of the assembler
> > output.... I have both here, so if anyone is interested, just let
> > me know.
> 
> I thought that 'addq', and 'adda' were two separate instructions.
> I agree that 'adda' (usually any 'add? xxx,An') doesn't change the flags, 
> but as far as I know the 'addq' instruction does.
> I may be wrong, but I'd like to see that section where it says so.
> 

My MC68020 Users Manual says in the description of addq that the
condition registers are not modified if the destination is an
address register.   Is it possible that the 68000 handled this
differently?

Brad

> I would also like to see the to different outputs, please!
> 
> Stefan
> 
> 
>