[llvm] [DirectX] Add support for typedBufferLoad and Store for RWBuffer<double2> and RWBuffer<double> (PR #139996)

[Justin Bogner via llvm-commits]

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@@ -70,6 +70,15 @@ static bool isIntrinsicExpansion(Function &F) {
   case Intrinsic::vector_reduce_add:
   case Intrinsic::vector_reduce_fadd:
     return true;
+  case Intrinsic::dx_resource_load_typedbuffer: // want to transform double and
+                                                // double2
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bogner wrote:

Probably better to move the comment to the next line (also some slight editorial suggestion)
```suggestion
  case Intrinsic::dx_resource_load_typedbuffer:
    // We need to handle doubles and vectors of doubles.
```

https://github.com/llvm/llvm-project/pull/139996