------- Comment #16 from dje at gcc dot gnu dot org 2006-06-07 21:39 ------- I checked with the IBM XLC team and they speculatively increase the alignment of variables that could be auto-vectorized, so that gives another vote for that method. They did mention that whole-program IPA allows them to know when the increased alignment actually will be needed before emitting any functions so they can be more selective.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27770
