http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52492
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*
Status|UNCONFIRMED |NEW
Known to work| |4.5.3
Keywords| |wrong-code
Last reconfirmed| |2012-03-05
Component|c++ |target
Ever Confirmed|0 |1
Summary|-ftree-vectorize |[4.6/4.7/4.8 Regression]
|optimization bug |-ftree-vectorize
| |optimization bug
Target Milestone|--- |4.6.4
Known to fail| |4.6.3, 4.7.0
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-05
14:33:05 UTC ---
Confirmed.
0x0000000000400bc3 <+188>: mov $0x0,%esi
=> 0x0000000000400bc8 <+193>: psubusw (%rcx),%xmm0
and rcx is 0x603051, thus this is an unaligned access. We're expanding
MAX_EXPR, so I suspect a target bug for now.
4.5.x works.
