------- Comment #3 from dalej at gcc dot gnu dot org 2005-12-13 22:54 ------- (In the original example) note the bit vectors at beginning and end of blocks show 120 as live throughout the loop, although it isn't really. That's why I think it affects register pressure. GRA does do some munging of those bit vectors though, maybe it fixes this.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25399