[fpc-pascal] Lack of 'volatile' a serious issue. Any other such caveats?

[Mark Morgan Lloyd]

R. Diez wrote:

> Issuing a generic memory barrier is workable, but it kills performance, 
> as all variables will be reloaded again. Performance does matter when 
> working on microcontrollers.

Could I ask for a reality check here. That sounds more like a cache 
flush, while a membar only ensures that any reordered reads and writes 
are disentangled: I'd not expect it to invalidate registers.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]