Question about default optimizations

[Jonathan Wakely]

On 23 November 2015 at 16:31, staticx wrote:
> Hi Andrew,
>
> I am not saying that.
>
> My findings are : number of default optimizations in O2 = number of default
> optimizations in O3 < number of default optimizations in O1.

How do you count "number of optimizations"?

> This is true when we turn off all corresponding optimizations that are
> controllable through CLI.
>
> I tested that by myself. I can give you a reference paper arguing that.
> http://users.elis.ugent.be/~leeckhou/papers/cgo08.pdf
>
> Please check Section 6 in this paper.

Section 6 doesn't seem to say anything about optimizations that aren't
controlled by a -fxxx flag.