[llvm] [nfc] Fix RTTI for `InstrProf` intrinsics (PR #83511)

[Ellis Hoag via llvm-commits]

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@@ -1429,7 +1429,35 @@ class VACopyInst : public IntrinsicInst {
 
 /// A base class for all instrprof intrinsics.
 class InstrProfInstBase : public IntrinsicInst {
+protected:
+  static bool isCounterBase(const IntrinsicInst &I) {
+    switch (I.getIntrinsicID()) {
+    case Intrinsic::instrprof_cover:
+    case Intrinsic::instrprof_increment:
+    case Intrinsic::instrprof_increment_step:
+    case Intrinsic::instrprof_timestamp:
+    case Intrinsic::instrprof_value_profile:
+      return true;
+    }
+    return false;
+  }
+  static bool isMCDCBitmapBase(const IntrinsicInst &I) {
+    switch (I.getIntrinsicID()) {
+    case Intrinsic::instrprof_mcdc_parameters:
+    case Intrinsic::instrprof_mcdc_tvbitmap_update:
+      return true;
+    }
+    return false;
+  }
+
 public:
+  static bool classof(const Value *V) {
+    if (const auto *Instr = dyn_cast<IntrinsicInst>(V))
+      return isCounterBase(*Instr) || isMCDCBitmapBase(*Instr) ||
+             Instr->getIntrinsicID() ==
+                 Intrinsic::instrprof_mcdc_condbitmap_update;
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ellishg wrote:

Nevermind, I found the comment for `InstrProfMCDCCondBitmapUpdate`

https://github.com/llvm/llvm-project/pull/83511