search for: _m512

...it x86. (This is documented in PR21510.) Specifically, GCC uses XMM0-XMM2 to pass the first 3 __m128 parameters, and the rest are passed on the stack. Clang passes an additional parameter by register, using XMM0-XMM3. The same applies to __m256 with YMM0-2 vs. YMM0-3. In theory, it would apply to __m512 as well, but currently clang doesn't support passing __m512 in x86 mode at all. ICC has the same behavior as GCC, and it seems that MSVC in 32-bit mode only *allows* up to 3 vector parameters per function (when not using __vectorcall), and these 3 are passed in XMM0-XMM2, which is closer to the...