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On Saturday 17 May 2003 13:43, Sven Vermeulen wrote:
> On Sat, May 17, 2003 at 03:49:11AM +0100, Chris Davies wrote:
> > I had the idea to build -fbranch-probabilities optimisation into portage.
> > This is where a sample run of data is taken using the program compiled
> > with -fprofile-arcs, and that data then used to reorganise the object
> > code so conditional branches are layed out in a more efficient manner.
> Why implement it in Portage? Isn't it up to the user to define it in the
> CFLAGS or not?
This won't be possible because if you want this optimisation you have:
a) To compile the program with -fprofile-arcs
b) Run the program
c) Recompile the program with the same optimisations but with
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