gcc, as, AVX, binutils and MacOS X 10.7

[Vincenzo Innocente]

I tried the "as" wrapper with 
gcc version 4.7.0 20110926 (experimental) (GCC) 
and got a
error: invalid instruction mnemonic 'vcvttss2siq'
	vcvttss2siq	%xmm0, %rax

so it seems that clang is not complete (or gcc mnemonic not fully conformant)

vincenzo