Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact

Linus Torvalds
2009-01-09T17:12:58Z

On Fri, 9 Jan 2009, Andi Kleen wrote:
>
> There's also one alternative: gcc's inlining algorithms are extensibly
> tunable with --param. We might be able to find a set of numbers that
> make it roughly work like we want it by default.

We tried that.

IIRC, the numbers mean different things for different versions of gcc, and
I think using the parameters was very strongly discouraged by gcc
developers. IOW, they were meant for gcc developers internal tuning
efforts, not really for external people. Which means that using them would
put us _more_ at the mercy of random compiler versions rather than less.

Linus