On 06/06/2015 13:00, sdcc-user-requ...@lists.sourceforge.net wrote:
> Hi Philipp,
>
> you were quicker:) Simon, you probably have a chance to work around it with
> peephole rules requiring no compiler modification at all.
>
>
> Idea is to use the JB bit,rel instruction to access the bit, peephole rule
> for that could look similar to:
>
>
> replace {
> mov c,%1
> } by {
> ; Peephole 1000.a mov c,%1 workaround fix
> ; push acc
> jb %1, . + x ; adapt relative jump
> clrb c
> sjmp . + y ; adapt relative jump
> setb c
> ; pop acc
> }
>
>
> Greetings,
> Frieder
HI,
Thanks for replying so fast and for the pointers with the peephole
optimization rules, this appears to do exactly what I need. The same bug
also exists in silicon on the CSR101x pio controller core, but currently
its only use as31 so people are told to steer clear of those instructions.
Simon
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