Tim Prince wrote: > If you want those, you must request them with -mtune=barcelona.
OK, so it is an alignment issue (with -mtune=barcelona): .L6: movups 0(%rbp,%rax), %xmm0 movups (%rbx,%rax), %xmm1 incl %ecx addps %xmm1, %xmm0 movaps %xmm0, (%r8,%rax) addq $16, %rax cmpl %r10d, %ecx jb .L6 Thanks, -- Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290 Saturnushof 14, 3738 XG Maartensdijk, The Netherlands At home: http://moene.org/~toon/ Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html