[clang] [HLSL][Sema] Validate that occupied register numbers never exceed UINT32_MAX (PR #174028)

[Tex Riddell via cfe-commits]

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+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
+
+// test semantic validation for register numbers that exceed UINT32_MAX
+
+struct S {
+  RWBuffer<float> A[4];
+  RWBuffer<int> B[10];
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tex3d wrote:

You'll want to test with multiple resource classes in same struct, and multiple register bindings (for each class) on the corresponding decl.

https://github.com/llvm/llvm-project/pull/174028