------- Comment #7 from stuart at apple dot com 2006-08-23 21:54 ------- Time has passed, and GCC has improved on this testcase. Here is what we generate today (trunk, 23aug2006) for the original testcase:
movss b(%rip), %xmm0
movss a(%rip), %xmm1
unpcklps %xmm0, %xmm1
movaps %xmm1, %xmm0
xorps %xmm1, %xmm1
movlhps %xmm1, %xmm0
ret
This isn't perfect, but it's much better than before.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24073
