Adding a float with all four elements of a float4

[Straivers via Digitalmars-d-learn]

Hi,

I want to make a utility wrapper around a core.simd.float4, and 
have been trying to make the following code work, but have been 
met with no success.

auto add(float rhs)
{
     return __simd(XMM.ADDPS, lhs, rhs);
}

Then I tried

auto add(float4 lhs, float rhs)
{
     float4 tmp = [rhs, rhs, rhs, rhs];
     return __simd(XMM.ADDPS, lhs, rhs);
}

When that didn't work, I turned to IASM and threw together this:

float4 add(float4 lhs, float rhs)
{
     float4 res;
     float4 rhs_tmp = [rhs, rhs, rhs, rhs];
     auto lhs_addr = &lhs;
     auto rhs_addr = &rhs_tmp;
     asm
     {
         mov RAX, lhs_addr;
         mov RBX, rhs_addr;
         movups XMM0, [RAX];
         movups XMM1, [RBX];

         addps XMM0, XMM1;
         movups res, XMM0;
     }
     return res;
}

and it still didn't work. So, what am I doing wrong?