https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70928
--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- Short sequences for the rest of -32 to 31 are possible also. The splats can be done as follows. x even, x in [-32,-18] U [16,30]: vspltis[bhw] t, x vaddu[bhw]m y, t, t x odd, x in [17,31]: vspltis[bhw] t, x-16 vspltis[bhw] u, -16 vsubu[bhw]m y, t, u x odd, x in [-31,-17]: vspltisw t, x+16 vspltisw u, -16 vadduwm y, t, u These can then again be unpacked and converted to floating point. This may or may not be preferable to a load, as the dependency chains start to get a bit long.
