[Bug c++/54741] GCC 4.4, 4.5, 4.6 4.7 (probably 4.8) Generates un-usable code on AVX supported CPUs (FreeBSD)

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54741

Mikael Pettersson <mikpe at it dot uu.se> changed:

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--- Comment #4 from Mikael Pettersson <mikpe at it dot uu.se> 2012-10-01 11:20:21 UTC ---
I suspect that the BSD kernel in question doesn't support AVX, so CPUID reports
AVX but not OSXSAVE.  That would cause any AVX insn to #UD.  If this is the
case, then gcc's -march=native is in error for failing to check OSXSAVE.