Op Sun, 3 Mar 2013, schreef Marcos Douglas:
On Sun, Mar 3, 2013 at 5:16 PM, Graeme Geldenhuys
<gra...@geldenhuys.co.uk> wrote:
On 2013-03-03 19:47, Florian Klämpfl wrote:
First 10 m of a marathon done.
Is that 'miles' or 'meters'? ;-)
Sad. Instead of "fight", why not walking together?
IMHO Martin Schreiber is doing a great job using these comparisons and
some improvements could be made in FPC... but he is making a mistake
in their approach of how to present FPC's "defects".
Martin:
I do not know nothing about compilers, but I know the Florian Klämpfl
will do nothing about you're saying because do you do not have
proposed improvements! You are only showing the Delphi/Kylix speed is
extremely superior (even knowing that Delphi do not is multiplataform
and do not have the complexity that FPC has, AFAIK).
One more thing: try do not thinking only in MSEgui in your thoughts,
in your great ideas.
IMHO the MSEgui should be part of FPC, somehow, but...
FPC Team:
Try to hear Martin otherwise, because he is a great developer with great ideas.
That FPC is slower than Delphi is a result of many concious decisions:
* FPC has a lot of passes through the node tree - allows more
features and transformations
* FPC has a more layered code generation (hlcg, cg, cpu specific
overrides) - allows manu CPU architectures, JVM and more
* FPC has an advanced register allocator. Allows speedy code and many CPU
architectures.
* FPC has external debug information. Due its nature, this debug info
requires processing power.
As these are concious decisions, there is no quick fix. This doesn't
mean no attention has been made to the compiler speed, many efforts
have been put into profiling and optimizing the algorithms. For the
rest, one has to accept FPC as it is. If FPC was inferior to Delphi,
we would not have had this discussion.
Further, global bennchmarks of "my million line program takes long to
compile" are not helpfull at all in diagnosing performance problems. (Or
bugs, or other issues).
Daniël
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