------- Comment #23 from jakub at gcc dot gnu dot org 2010-04-29 13:18 ------- Created an attachment (id=20514) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20514&action=view) d3.c
BTW, I've timed different variants of the C code for the tonto loop, and time /tmp/d3 1 real 0m0.667s user 0m0.666s sys 0m0.001s time /tmp/d3 2 real 0m0.640s user 0m0.639s sys 0m0.000s time /tmp/d3 3 real 0m0.616s user 0m0.614s sys 0m0.002s and clearly the last one (versioning the loop if the temporary can be easily avoided for -O3 at least) is the winner here. I've started looking into that yesterday. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42958
