http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56339
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #7 from Uros Bizjak <ubizjak at gmail dot com> 2013-03-08 15:51:15
UTC ---
(In reply to comment #6)
> So - what regressed this compared to 4.7? It wasn't regmove.c changes.
As said in comment 0:
gcc-4.7 generates:
f:
addsd %xmm2, %xmm0
ret
gcc-4.8 generates:
f:
addsd %xmm0, %xmm2
movapd %xmm2, %xmm0
ret
