[Bug rtl-optimization/54342] [4.8 Regression] Wrong mode of call argument

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54342

--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> 2012-08-23 14:26:53 UTC ---
There are

     /* We implement the move patterns for all vector modes into and
         out of SSE registers, even when no operation instructions
         are available.  OImode move is available only when AVX is
         enabled.  */
      return ((TARGET_AVX && mode == OImode)
              || VALID_AVX256_REG_MODE (mode)

to deal with OImode and AVX.  Please find out what you need to
do to support vzeroupper insertion.