http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50494
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-13 10:55:15 UTC --- Created attachment 29436 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29436 patch -fsection-anchors enables pass_ipa_increase_alignment (the vectorizer can not align globals after any function was assembled, so we do that upfront). In LTO: /* If this variable belongs to the global constant pool, retrieve the pre-computed RTL or recompute it in LTO mode. */ if (TREE_CODE (decl) == VAR_DECL && DECL_IN_CONSTANT_POOL (decl)) { SET_DECL_RTL (decl, output_constant_def (DECL_INITIAL (decl), 1)); return; but obviously output_constant_def when just getting DECL_INITIAL cannot honor any special alignment requirements of decl. It will simply get a new decl with standard alignment. We know decl is already the decl associated with the constant, so we should just re-use it. So I believe the attached should fix this. Can PPC people plaease test?
