penalty for proper tail recursion
Thu, 8 Nov 2001 16:38:59 +1100
On 05-Nov-2001, Jan-Willem Maessen <firstname.lastname@example.org> wrote:
> 5) In GCC, shadow stacks can be efficient to pull off---compile without a
> frame pointer, and declare a register global to hold the shadow
> stack pointer. Net change in number of available registers: none.
That's not really a fair comparison, since you can compile without a frame
pointer even if you don't use shadow stacks. If you declare a register
global, then you really are reducing the number of available registers.
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The University of Melbourne | of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh> | -- the last words of T. S. Garp.