[clang] [llvm] [HLSL] Add support for dynamic resources (PR #221103)

[Justin Bogner via llvm-commits]

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@@ -0,0 +1,36 @@
+//===----- hlsl_resources.h - HLSL definitions for resources ----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _HLSL_HLSL_RESOURCES_H_
+#define _HLSL_HLSL_RESOURCES_H_
+
+namespace hlsl {
+
+#define _HLSL_AVAILABILITY(platform, version)                                  \
+  __attribute__((availability(platform, introduced = version)))
+
+struct __hlsl_resource_descriptor_heap_struct {
+  __hlsl_heap_resource_info operator[](uint32_t Index) {
+    return __hlsl_heap_resource_info{Index};
+  }
+};
+
+struct __hlsl_sampler_descriptor_heap_struct {
+  __hlsl_heap_sampler_info operator[](uint32_t Index) {
+    return __hlsl_heap_sampler_info{Index};
+  }
+};
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bogner wrote:

These should probably be in a `__detail` namespace rather than introducing reserved words in `hlsl::` itself. We can presumably drop `__hlsl_` in that case at least though.

https://github.com/llvm/llvm-project/pull/221103