[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,
----------------
Keenuts wrote:

This being a small stepping stone for the larger change bringing hlsl_input/hlsl_output, I haven't wrote a specific HLSL spec part, only relied on current MSDN & HLSL implementations (I agree, not great).
For the `hlsl_input`/`hlsl_output` address spaces, here is the wg-hlsl proposal:
https://github.com/llvm/wg-hlsl/pull/97


But you are right, maybe that's something we should now write properly in the hlsl-spec repo





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