[llvm] [NFC][TableGen] Add accessors for various instruction subclasses (PR #146615)

[Rahul Joshi via llvm-commits]

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@@ -191,19 +182,34 @@ class CodeGenTarget {
     return InstrsByEnum;
   }
 
+  // Functions that return various slices of `getInstructionsByEnumValue`.
+  ArrayRef<const CodeGenInstruction *>
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jurahul wrote:

Thanks, resolving. Will do in a follow on PR.

https://github.com/llvm/llvm-project/pull/146615