1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/CountVisits.cpp b/llvm/lib/Transforms/Utils/CountVisits.cpp
new file mode 100644
index 000000000000..4faded8fc656
--- /dev/null
+++ b/llvm/lib/Transforms/Utils/CountVisits.cpp
@@ -0,0 +1,25 @@
+//===- CountVisits.cpp ----------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Transforms/Utils/CountVisits.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/PassManager.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "count-visits"
+
+STATISTIC(MaxVisited, "Max number of times we visited a function");
+
+PreservedAnalyses CountVisitsPass::run(Function &F, FunctionAnalysisManager &) {
+  uint32_t Count = Counts[F.getName()] + 1;
+  Counts[F.getName()] = Count;
+  if (Count > MaxVisited)
+    MaxVisited = Count;
+  return PreservedAnalyses::all();
+}