[clang] [llvm] [DirectX] Validate registers are bound to root signature (PR #146785)

[Finn Plummer via llvm-commits]

================
@@ -95,6 +97,8 @@ class BindingInfo {
   LLVM_ABI std::optional<uint32_t>
   findAvailableBinding(dxil::ResourceClass RC, uint32_t Space, int32_t Size);
 
+  LLVM_ABI bool isBound(dxil::ResourceClass RC, uint32_t Space, BindingRange B);
----------------
inbelic wrote:

Isn't this equivalent to `findAvailableBinding` and checking if it is not `std::nullopt`?

https://github.com/llvm/llvm-project/pull/146785