[clang] [clang-tools-extra] [clangd][HLSL] Fix register attribute source range for hover inside arguments (PR #212881)

[Maria Fernanda Guimarães via cfe-commits]

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@@ -5311,6 +5311,30 @@ TEST(Hover, FunctionParameters) {
   }
 }
 
+TEST(Hover, HLSLRegisterAttributeRange) {
+  Annotations T(R"hlsl(
+    Texture2D tex : [[^register]]([[^t1]]);
+  )hlsl");
+
+  TestTU TU = TestTU::withCode(T.code());
+  TU.Filename = "TestTU.hlsl";
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mafeguimaraes wrote:

Good idea. I'll rebase this branch on top of #212741 once it gets merged and reuse the helper then.

https://github.com/llvm/llvm-project/pull/212881