------- Comment #3 from pinskia at gcc dot gnu dot org 2007-03-26 16:51 ------- > I guess the cost of loading zero is cheaper then?
Cheaper than loading 0xDEADBEEF but not cheap enough not to pull out of the loop. All the "easy" (one instruction) constants are not pulled out. Really I think rtl loop invariant should pull everything it can pull out of the loop and then let the RA "fix" up the loop when it runs out of registers. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31360
