[Bug c/49128] gcc -mtune=native generates unsuported instructions

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49128

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-05-23 16:53:00 UTC ---
you haven't provided the necessary information requested at
http://gcc.gnu.org/bugs/

Specifically you need to say how your gcc was configured (because -mtune should
not affect the instructions gcc thinks are supported, that's set by -march) and
provide your full compilation command and example code which reproduces the
problem