[Bug middle-end/53623] [4.7/4.8/4.9 Regression] sign extension is effectively split into two x86-64 instructions

[hjl.tools at gmail dot com]

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

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
      Known to work|                            |4.9.0, 5.0
         Resolution|FIXED                       |---

--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
This regression is only fixed in 4.9 and should be backported to 4.8
branch.