[clang] [llvm] [HLSL] Add `Increment`/`DecrementCounter` methods to structured buffers (PR #114148)

[Greg Roth via cfe-commits]

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@@ -35,6 +35,9 @@ def int_dx_typedBufferLoad_checkbit
 def int_dx_typedBufferStore
     : DefaultAttrsIntrinsic<[], [llvm_any_ty, llvm_i32_ty, llvm_anyvector_ty]>;
 
+def int_dx_bufferUpdateCounter
+    : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_any_ty, llvm_i32_ty], [IntrWriteMem]>;
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pow2clk wrote:

`IntrWriteMem` indicates that this only writes memory. Since it returns the original counter value, it does read some memory too.

https://github.com/llvm/llvm-project/pull/114148