On Fri, Jun 27, 2014 at 6:37 PM, Armin Rigo <arigo@tunes.org> wrote:
Hi Yichao,
On 27 June 2014 12:17, Yichao Yu <yyc1992@gmail.com> wrote:
I am still creating a tuple out of these 5 numbers/strings since I don't want to duplicate the hash functions for all of them. Can the compiler deal with this case efficiently?
If by "deal with this case efficiently" you mean, will the compiler remove the tuple allocation and inline the 5-elements hash, then it might just be possible depending on a number of details, but I doubt it. Better to be explicit. I had in mind something like:
my_hash = num1 * 1000003 my_hash = (my_hash ^ num2) * 1000003 my_hash = (my_hash ^ compute_hash(string3)) my_hash = intmask(my_hash) # at the end
Done
A bientôt,
Armin.