[clang] [SPIR-V] Add hlsl_private address space for HLSL/SPIR-V (PR #122103)

[Nathan Gauër via cfe-commits]

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@@ -58,6 +58,7 @@ enum class LangAS : unsigned {
 
   // HLSL specific address spaces.
   hlsl_groupshared,
+  hlsl_private,
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Keenuts wrote:

That's correct, slightly reworded the description.
The thing is, only SPIR-V will be using this for now (same as the few others we'll add line hlsl_input, hlsl_output).

https://github.com/llvm/llvm-project/pull/122103