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Re: [scala-tools] Compiler optimisations/inlining

by Erkki Lindpere-2 :: Rate this Message:

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Sorry, I am stupid. Of course the methods need to be final for them to
be inlined...

Erkki

Erkki Lindpere wrote:

> Are the Scala compiler's -optimise and -Yinline options actually
> supposed to do some inlining at the moment? I have tried this with
> numerous Scala versions but nothing seems to get inlined. With some
> older versions it used to even crash the compiler.
>
> Note: I'm compiling from the Eclipse IDE and set the optimise and
> inline as per-project options.
>
> For example, for the following class, nothing seems to get inlined:
>
> case class Vector2f(x: Float, y: Float) {
>  @inline def +(a: Float) = Vector2f(x + a, y + a)
>  @inline def -(a: Float) = Vector2f(x - a, y - a)
>  @inline def *(a: Float) = Vector2f(x * a, y * a)
>  @inline def /(a: Float) = Vector2f(x / a, y / a)
>  ...
> }
>
> I recently noticed the @inline annotation and added those to all
> methods, but even that doesn't seem to cause those methods to actually
> get inlined.
>
> Erkki
>

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