[llvm] [libsycl] Implement nd_range kernel submissions (PR #206505)

[Kseniya Tikhomirova via llvm-commits]

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@@ -126,6 +127,12 @@ class Builder {
     return __spirv::initBuiltInGlobalInvocationId<Dims, id<Dims>>();
   }
 
+  /// \return the nd_item currently being operated on by the device.
+  template <int Dims> static const nd_item<Dims> getElement(nd_item<Dims> *) {
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KseniyaTikhomirova wrote:

getElement is not a free function, all these methods are grouped by class Builder and should be static since don't require object to exist.

https://github.com/llvm/llvm-project/pull/206505