Does Xcode 4 have support for AVX?

Question

Before I spend time and money downloading Xcode 4, can anyone tell me whether it comes with a version of gcc (or any other compiler, e.g. LLVM) which supports the AVX instru

Answer 1

I eventually cracked and downloaded Xcode 4 - it looks like clang is the only compiler that may support AVX currently, although I haven't tested it properly:

$ clang -dM -E -mavx - < /dev/null | grep -i avx
#define __AVX__ 1