Luiz Americo Pereira Camara schrieb:
Florian Klaempfl escreveu:
Luiz Americo Pereira Camara schrieb:
My point was that this could be a missing optimization opportunity:
pass by reference a 8 bytes parameter when the pointer size is 4.
Don't forget that this makes an extra memory access.
I will do my question in a simpler way:
Using constant parameters (add const keyword in front of an argument) is
beneficial for record types with size > pointer size and for string
types but not for integer and pointer types.
No, this is not necessarily true. The extra indirect can be also slower.
Currently is not beneficial for double types and there's no way to
improve that. So when developing an interface that uses double types
does not matter using const or not. Now and in the future. Right?
It might matter for the optimizer in other situations.
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