Hi, As pointed out here http://gcc.gnu.org/ml/gcc-patches/2011-03/msg02183.html the change of the default vector size has to be documented in changes.html:
* htdocs/gcc-4.7/changes.html (targets): Document ARM NEON default vector size change. Index: htdocs/gcc-4.7/changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v retrieving revision 1.6 diff -r1.6 changes.html 82a83,89 > <h3 id="arm">ARM</h3> > <ul> > <li>The default vector size in auto-vectorization for NEON is now 128 > bits. > If for some reason vectorization fails, the vectorizer tries again with > 64 bit vectors.</li> > </ul> > OK (once the change itself is committed)? Thanks, Ira