[clang] [HLSL] Add `[[hlsl::row_access]]` attribute (PR #107954)

[Justin Bogner via cfe-commits]

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@@ -6169,9 +6169,13 @@ class HLSLAttributedResourceType : public Type, public llvm::FoldingSetNode {
     // Data gathered from HLSL resource attributes
     llvm::dxil::ResourceClass ResourceClass;
     uint8_t IsROV : 1;
-    Attributes(llvm::dxil::ResourceClass ResourceClass, bool IsROV)
-        : ResourceClass(ResourceClass), IsROV(IsROV) {}
-    Attributes() : ResourceClass(llvm::dxil::ResourceClass::UAV), IsROV(0) {}
+    uint8_t RowAccess : 1;
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bogner wrote:

It's probably worth putting `LLVM_PREFERRED_TYPE(bool)` on these. This is [[[clang::preferred_type]]](https://clang.llvm.org/docs/AttributeReference.html#preferred-type) on compilers that support it and mostly just improves the debugging experience.

https://github.com/llvm/llvm-project/pull/107954