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

[Mircea Trofin via llvm-commits]

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

None

>From 6344b6a0618006ddbaac6c773dd39f1f49de7530 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Thu, 29 Feb 2024 17:08:19 -0800
Subject: [PATCH] [mfc] Fix RTTI for `InstrProf` intrinsics

---
 llvm/include/llvm/IR/IntrinsicInst.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/llvm/include/llvm/IR/IntrinsicInst.h b/llvm/include/llvm/IR/IntrinsicInst.h
index fbaaef8ea44315..2bd4f94f53170e 100644
--- a/llvm/include/llvm/IR/IntrinsicInst.h
+++ b/llvm/include/llvm/IR/IntrinsicInst.h
@@ -1428,8 +1428,15 @@ class VACopyInst : public IntrinsicInst {
 };
 
 /// A base class for all instrprof intrinsics.
+class InstrProfInstBase;
+class InstrProfMCDCBitmapInstBase;
+class InstrProfMCDCCondBitmapUpdate;
 class InstrProfInstBase : public IntrinsicInst {
 public:
+  static bool classof(const Value *V) {
+    return isa<InstrProfInstBase>(V) || isa<InstrProfMCDCBitmapInstBase>(V) ||
+           isa<InstrProfMCDCCondBitmapUpdate>(V);
+  }
   // The name of the instrumented function.
   GlobalVariable *getName() const {
     return cast<GlobalVariable>(
@@ -1442,8 +1449,17 @@ class InstrProfInstBase : public IntrinsicInst {
 };
 
 /// A base class for all instrprof counter intrinsics.
+class InstProfCoverInst;
+class InstProfIncrementInst;
+class InstrProfTimestampInst;
+class InstrProfValueProfileInst;
 class InstrProfCntrInstBase : public InstrProfInstBase {
 public:
+  static bool classof(const Value *V){
+    return isa<InstProfCoverInst>(V) || isa<InstProfIncrementInst>(V) ||
+           isa<InstrProfTimestampInst>(V) || isa<InstrProfValueProfileInst>(V);
+  }
+
   // The number of counters for the instrumented function.
   ConstantInt *getNumCounters() const;
   // The index of the counter that this instruction acts on.