Joe Buck wrote:
On Mon, Apr 14, 2008 at 04:27:40PM -0400, Robert Dewar wrote:
Ian Lance Taylor wrote:
A theoretical argument for why somebody might write problematic code
is http://www.fefe.de/openldap-mail.txt .
I don't know where, or even if, such code is actually found in the
wild.
Ian
Fair enough question. The other question of course is how much this
optimization saves.
The big savings are in loops, where the compiler can determine that
it doesn't have to consider the possibility of aliasing and can therefore
use values in registers instead of reloading from memory.
Savings? yes
Big? (from this particular optimization) dubious without data.
