[llvm] [SPIR-V] Add support for inline SPIR-V types (PR #125316)

[Cassandra Beckley via llvm-commits]

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@@ -266,6 +266,54 @@ parameters of its underlying image type, so that a sampled image for the
 previous type has the representation
 ``target("spirv.SampledImage, void, 1, 1, 0, 0, 0, 0, 0)``.
 
+.. _inline-spirv-types:
+
+Inline SPIR-V Types
+-------------------
+
+HLSL allows users to create types representing specific SPIR-V types, using ``vk::SpirvType`` and
+``vk::SpirvOpaqueType``. These are specified in the `Inline SPIR-V`_ proposal. They may be
+represented using target extension types:
+
+.. _Inline SPIR-V: https://microsoft.github.io/hlsl-specs/proposals/0011-inline-spirv.html#types
+
+  .. table:: Inline SPIR-V Types
----------------
cassiebeckley wrote:

This should be fixed now.

https://github.com/llvm/llvm-project/pull/125316