H1 2015 Priorities and Bare-Metal Programming

[Iain Buclaw via Digitalmars-d]

On 2 February 2015 at 10:57, Walter Bright via Digitalmars-d
<digitalmars-d at puremagic.com> wrote:
> On 2/2/2015 1:39 AM, Johannes Pfau wrote:
>>
>> No, it doesn't even come close.
>>
>> * Ports.B += 7 doesn't work.
>
>
> This should not be done with MMIO because the read and write cycles
> generated are ill-defined and vary based on obscure backend details.
>
>
>> In order to implement it you need a
>>    Volatile!ubyte wrapper, return by ref and avoid some compiler bugs
>
>
> What compiler bugs?
>
>
>> * You do need force-inline to produce halfway decent code
>
>
> Nope. volatileLoad() and volatileStore() do not produce function calls.
>

I think he was referring to ubyte B() and void B(), and not the
load/store intrinsics themselves.