[DirectX] MakeDouble doesn't match validator expectations

[spall]

Function: main: error: 'dx.op.makeDouble' is not a DXILOpFuncition for DXILOpcode 'MakeDouble'.
# | note: at '%hlsl.asdouble.i1 = call double @dx.op.makeDouble(i32 101, i32 0, i32 2146959360) #3' in block 'entry' of function 'main'.
# | Function: dx.op.makeDouble.f64: error: External function 'dx.op.makeDouble.f64' is unused.
# | Validation failed.

seen when compiling this code:

RWStructuredBuffer<double> Out1 : register(u0);

[numthreads(1,1,1)]
void main() {
  Out1[0] = asdouble(0x00000000, 0x7FF80000); // Should be NaN
}

Looks the same as this: #139018