On 31.01.2015 16:49, Alan Cox wrote: > On Sat, 31 Jan 2015 08:31:42 +0100 > Philipp Klaus Krause <p...@spth.de> wrote: > >> On 31.01.2015 06:47, Dave McGuire wrote: >>> On 01/26/2015 04:51 PM, Philipp Klaus Krause wrote: >>>> When I get around to do some more work on the Z80 port, the Z180 >>>> port will also benefit from it. I intend to particularly look into >>>> more flexible handling of registers a and iy to improve code >>>> generation. > > Any plan to use hl' de' and bc' for long values ? > > (ie > add hl, de > exx > adc hl, de > exx > ) > > rather than tending end up generating 4 8bit add/adc's using (ix) > > Alan > >
AFAIR some users want to keep the second register set reserved for interrupt handlers or syscalls. However once we have the more flexible handling of iy we will be able to generate code like add iy, de adc hl, bc for 32-bit additions. Philipp
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