On Thu, 1 Jul 2021, H.J. Lu via Gcc-patches wrote: > 2. Return _Float16 and _Complex _Float16 values in %xmm0/%xmm1 registers.
That restricts use of _Float16 to processors with SSE. Is that what we want in the ABI, or should _Float16 be available with base 32-bit x86 architecture features only, much like _Float128 and the decimal FP types are? (If it is restricted to SSE, we can of course ensure relevant libgcc functions are built with SSE enabled, and likewise in glibc if that gains _Float16 functions, though maybe with some extra complications to get relevant testcases to run whenever possible.) -- Joseph S. Myers jos...@codesourcery.com