Earlier quoted context omitted.
In fairness, "SIMD support" is not exactly "the compiler can reduce code to AVX instructions" but more like "you can now write non-portable custom assembly-like code to make your code faster".
Still better than no SIMD at all imo
Yup. I used to use Clozure CL all the time, but since the code I write tends to involve lots of number crunching, SB-SIMD and Loopus are indispensible.
Even before SB-SIMD, SBCL has always seemed like the best Common Lisp implementation for any arithmetic. Or at least this seems to be case when you benchmark CCL against it :)