[Bug middle-end/53623] [4.8 Regression] sign extension is effectively split into two x86-64 instructions

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53623

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.7.4                       |4.8.4
            Summary|[4.7/4.8 Regression] sign   |[4.8 Regression] sign
                   |extension is effectively    |extension is effectively
                   |split into two x86-64       |split into two x86-64
                   |instructions                |instructions