https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115054
--- Comment #5 from Trevor Gross <tmgross at umich dot edu> --- Looks like bugz cut off part of the sysv quote, here for reference: > Arguments of types __float128, _Decimal128 and __m128 are split > into two halves. The least significant ones belong to class SSE, the most > significant one to class SSEUP.