On Mon, Mar 21, 2011 at 3:25 PM, Andrew Pinski <pins...@gmail.com> wrote: > On Mon, Mar 21, 2011 at 3:21 PM, Wellander, Pat - Code Sourcery > <pwell...@codesourcery.com> wrote: >> The stack is aligned at 16 bytes with AltiVec (if not, this patch would not >> make sense). >> Also, all char arrays are aligned at 16 bytes. >> This patch causes other local stack arrays >= 16 bytes to be aligned at 16 >> bytes in order to >> make more effective use of AltiVec instructions. > > Then why not change it so not just auto arrays are aligned at 16 > bytes, just like char arrays?
Also what about structs containing just arrays? Should you have those aligned too? -- Pinski
