Miod Vallat wrote:
> > There is an interest in supporting PowerPC 970 ("G5"). That would
> > allow people to use more than 2G of RAM on the last generations of
> > Apple PowerMac machines. Otherwise I don't think we are interested in
> > anything before POWER8.
>
> Years ago, a decision was
> There is an interest in supporting PowerPC 970 ("G5"). That would
> allow people to use more than 2G of RAM on the last generations of
> Apple PowerMac machines. Otherwise I don't think we are interested in
> anything before POWER8.
Years ago, a decision was made to ditch 64-bit PA-RISC
On 2020-06-08, Christian Weisgerber wrote:
>> Did they also happen to add opcodes for doing swaps in registers?
>
> No.
> (I haven't looked at the vector instructions yet.)
PS: There's a vector permutate instruction, but AFAICT there is no
way to move data between general purpose and vector
> Date: Mon, 8 Jun 2020 13:28:55 +0200
> From: Christian Weisgerber
>
> powerpc has byte-swapping 16 and 32-bit load/stores and we use those
> in .
>
> Starting with POWER7 (Power ISA v.2.06), there are also corresponding
> 64-bit instructions. Do we want to use those on powerpc64? Or do
> we
David Gwynne:
> > Starting with POWER7 (Power ISA v.2.06), there are also corresponding
> > 64-bit instructions. Do we want to use those on powerpc64? Or do
> > we want to keep compatibility with older processors?
>
> I'm ok with using the instructions. I can't think of what benefit compat in
> On 8 Jun 2020, at 9:28 pm, Christian Weisgerber wrote:
>
> powerpc has byte-swapping 16 and 32-bit load/stores and we use those
> in .
>
> Starting with POWER7 (Power ISA v.2.06), there are also corresponding
> 64-bit instructions. Do we want to use those on powerpc64? Or do
> we want to
powerpc has byte-swapping 16 and 32-bit load/stores and we use those
in .
Starting with POWER7 (Power ISA v.2.06), there are also corresponding
64-bit instructions. Do we want to use those on powerpc64? Or do
we want to keep compatibility with older processors?
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