[clang] [HLSL] Collect explicit resource binding information (PR #111203)

[Justin Bogner via cfe-commits]

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@@ -83,6 +81,49 @@ static RegisterType getRegisterType(StringRef Slot) {
   }
 }
 
+static ResourceClass getResourceClass(RegisterType RT) {
+  switch (RT) {
+  case RegisterType::SRV:
+    return ResourceClass::SRV;
+  case RegisterType::UAV:
+    return ResourceClass::UAV;
+  case RegisterType::CBuffer:
+    return ResourceClass::CBuffer;
+  case RegisterType::Sampler:
+    return ResourceClass::Sampler;
+  default:
+    llvm_unreachable("unexpected RegisterType value");
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bogner wrote:

Let's explicitly spell out all of the enum values here instead of having a default case. This will play better with `-Wcovered-switch` if we add a new enum value at some point and forget to update this switch.

https://github.com/llvm/llvm-project/pull/111203