https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110013
--- Comment #2 from Devin Hussey ---
Scratch that. There is a somewhat easy way to fix this following psABI AND
using MMX with SSE.
Upon calling a function, we can have the following sequence
func:
movdq2q mm0, xmm0
movq mm1, [esp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110013
--- Comment #1 from Devin Hussey ---
As a side note, the official psABI does say that function call parameters use
MM0-MM2, if Clang follows its own rules then it means that the supposed
stability of the ABI is meaningless.
