Merging identical functions in GCC

[Laurent GUERBY]

On Fri, 2006-09-15 at 09:27 -0700, Ian Lance Taylor wrote:
> I think Danny has a 75% implementation based on hashing the RTL for a
> section and using that to select the COMDAT section signature.  Or the
> hashing can be done in the linker, but it still needs compiler help to
> know when it is permissible.

For code sections (I assume read-only), isn't the linker always able to
merge identical ones? What can the compiler do better than the linker?

Just curious,

Laurent