On 21.12.2013 02:11, Mark Morgan Lloyd wrote:
Sven Barth wrote:
On 20.12.2013 22:02, Mark Morgan Lloyd wrote:
A question if I may, leading on from
http://bugs.freepascal.org/view.php?id=25440
> - inc(x)/dec(x) with range checking enabled are "optimized" with
> taking address of x.
Is that why Inc() and Dec() can't be applied to properties, or are there
other issues?
http://wiki.freepascal.org/User_Changes_2.4.0#Treating_direct-mapped_properties_as_regular_fields
Noted, but I think my real question is whether the compiler could recognise
that the optimisation is
inappropriate and instead generate +=n (with range checking).
Yes, the compiler was recognizing case with enabled range checking and generating "x:=x+n". However
if "x" involves a function call (e.g. inc(somearray[foo()+2]); ) it is still necessary to avoid
calling it twice, hence the optimization. I used quotes because the end result was opposite to the
expected one.
Regards,
Sergei
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