Re: Kernel GCC Optimizations
Adam Majer (adamm@galacticasoftware.com)
Wed, 25 Dec 2002 00:16:41 -0600
On Sun, Dec 22, 2002 at 01:23:08PM +0000, Joao Seabra wrote:
> Rename registers from the gcc 3.2 man:
> "Attempt to avoid false dependencies in scheduled code by making
> use of registers left over after register allocation. This
> optimization will most benefit processors with lots of
> registers. It can, however, make debugging impossible, since
> variables will no longer stay in a "home register"."
Just to be blunt here :), i386 is not one of these register rich
archs. So it will probably not help you to compile with -O3... Of course
you could have something else...
- Adam
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