}
	if k := ft.OutSlice()[0].Kind_ & abi.KindMask; k == abi.Float32 || k == abi.Float64 {
		// In cdecl and stdcall, float results are returned in
		// ST(0). In fastcall, they're returned in XMM0.
		// Either way, it's not AX.
		panic("compileCallback: float results not supported")
	}
	if intArgRegs == 0 {
		// Make room for the uintptr-sized result.
		// If there are argument registers, the return value will