gcc, via -m32, still defaults to no SSE, i.e. pre-1999, i.e. ≥26 years and counting for increasing default.

clang, as far back as Compiler Explorer goes (i.e. clang 3.0.0, i.e. 2011), always assumes SSE for -m32; presumably because there's nothing to be backwards-compatible to, unlike gcc.

Doesn't look particularly good for "default will just change at some point", though we can hope.