[llvm] [DirectX] adding support to read/write descriptor table data using obj2yaml/yaml2obj (PR #138315)

[Justin Bogner via llvm-commits]

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@@ -86,8 +86,21 @@ ROOT_DESCRIPTOR_FLAG(3, DATA_STATIC)
 #endif // ROOT_DESCRIPTOR_FLAG
 
 
+// DESCRIPTOR_RANGE_FLAG(bit offset for the flag, name).
+#ifdef DESCRIPTOR_RANGE_FLAG
+
+DESCRIPTOR_RANGE_FLAG(0, NONE)
+DESCRIPTOR_RANGE_FLAG(1, DESCRIPTORS_VOLATILE)
+DESCRIPTOR_RANGE_FLAG(2, DATA_VOLATILE)
+DESCRIPTOR_RANGE_FLAG(3, DATA_STATIC_WHILE_SET_AT_EXECUTE)
+DESCRIPTOR_RANGE_FLAG(4, DATA_STATIC)
+DESCRIPTOR_RANGE_FLAG(16, DESCRIPTORS_STATIC_KEEPING_BUFFER_BOUNDS_CHECKS)
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bogner wrote:

These values are wrong - when we turn these into an enum in DXContainer.h, we do `Val = 1ull << Num`,  so we get NONE equal to 1 and DESCRIPTORS_VOLATILE equal to 2, even though DESCRIPTORS_VOLATILE should be 1 AFAICT

https://github.com/llvm/llvm-project/pull/138315