[Bug target/59021] [4.9 regression] new vzeroupper instructions generated with -mavx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59021

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-11-06
           Assignee|unassigned at gcc dot gnu.org      |ubizjak at gmail dot com
     Ever confirmed|0                           |1

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
I have patch in testing.

--cut here--
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c  (revision 204459)
+++ config/i386/i386.c  (working copy)
@@ -15708,7 +15708,7 @@ ix86_avx_u128_mode_needed (rtx insn)
              rtx arg = XEXP (XEXP (link, 0), 0);

              if (ix86_check_avx256_register (&arg, NULL))
-               return AVX_U128_ANY;
+               return AVX_U128_DIRTY;
            }
        }

--cut here--