diff --git a/mlir/lib/Transforms/lab4/kruglov_alexey/CMakeLists.txt b/mlir/lib/Transforms/lab4/kruglov_alexey/CMakeLists.txt
new file mode 100644
index 0000000000000..4124a23fd8ae0
--- /dev/null
+++ b/mlir/lib/Transforms/lab4/kruglov_alexey/CMakeLists.txt
@@ -0,0 +1,21 @@
+set(PluginName KruglovFunctionCallCntPass)
+
+file(GLOB_RECURSE ALL_SOURCE_FILES *.cpp *.h)
+add_llvm_pass_plugin(${PluginName}
+        ${ALL_SOURCE_FILES}
+        DEPENDS
+        intrinsics_gen
+        MLIRBuiltinLocationAttributesIncGen
+        MLIROpAsmInterfaceIncGen
+        MLIRBuiltinTypeInterfacesIncGen
+        MLIRBytecodeOpInterfaceIncGen
+        MLIRRegionKindInterfaceIncGen
+        MLIRSymbolInterfacesIncGen
+        MLIRSideEffectInterfacesIncGen
+        MLIRCallInterfacesIncGen
+        MLIRControlFlowInterfacesIncGen
+        MLIRInferTypeOpInterfaceIncGen
+        BUILDTREE_ONLY
+        )
+
+set(MLIR_TEST_DEPENDS ${PluginName} ${MLIR_TEST_DEPENDS} PARENT_SCOPE)
diff --git a/mlir/lib/Transforms/lab4/kruglov_alexey/FunctionCallCntrPass.cpp b/mlir/lib/Transforms/lab4/kruglov_alexey/FunctionCallCntrPass.cpp
new file mode 100644
index 0000000000000..bf4e3ac34a5f0
--- /dev/null
+++ b/mlir/lib/Transforms/lab4/kruglov_alexey/FunctionCallCntrPass.cpp
@@ -0,0 +1,47 @@
+#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Tools/Plugins/PassPlugin.h"
+
+using namespace mlir;
+
+namespace {
+class CallCounterPass
+    : public PassWrapper<CallCounterPass, OperationPass<ModuleOp>> {
+public:
+  StringRef getArgument() const final { return "KruglovFunctionCallCntPass"; }
+  StringRef getDescription() const final {
+    return "Counts the number of calls to each function in the module";
+  }
+
+  void runOnOperation() override {
+    llvm::DenseMap<StringRef, int> callCounter;
+
+    getOperation()->walk([&](LLVM::CallOp callOp) {
+      if (auto callee = callOp.getCallee()) {
+        callCounter[callee.value()]++;
+      }
+    });
+
+    getOperation()->walk([&](LLVM::LLVMFuncOp funcOp) {
+      StringRef funcName = funcOp.getName();
+      int callCount = callCounter.lookup(funcName);
+      funcOp->setAttr(
+          "CallCount",
+          IntegerAttr::get(IntegerType::get(funcOp.getContext(), 32),
+                           callCount));
+    });
+  }
+};
+} // namespace
+
+MLIR_DECLARE_EXPLICIT_TYPE_ID(CallCounterPass)
+MLIR_DEFINE_EXPLICIT_TYPE_ID(CallCounterPass)
+
+PassPluginLibraryInfo getCallCounterPassPluginInfo() {
+  return {MLIR_PLUGIN_API_VERSION, "KruglovFunctionCallCntPass",
+          LLVM_VERSION_STRING, []() { PassRegistration<CallCounterPass>(); }};
+}
+
+extern "C" LLVM_ATTRIBUTE_WEAK PassPluginLibraryInfo mlirGetPassPluginInfo() {
+  return getCallCounterPassPluginInfo();
+}
diff --git a/mlir/test/Transforms/lab4/kruglov_alexey/tests.mlir b/mlir/test/Transforms/lab4/kruglov_alexey/tests.mlir
new file mode 100644
index 0000000000000..3501479317e7d
--- /dev/null
+++ b/mlir/test/Transforms/lab4/kruglov_alexey/tests.mlir
@@ -0,0 +1,56 @@
+// RUN: mlir-opt -load-pass-plugin=%mlir_lib_dir/KruglovFunctionCallCntPass%shlibext --pass-pipeline="builtin.module(KruglovFunctionCallCntPass)" %s | FileCheck %s
+
+module attributes {dlti.dl_spec = #dlti.dl_spec<#dlti.dl_entry<!llvm.ptr<270>, dense<32> : vector<4xi32>>, #dlti.dl_entry<!llvm.ptr<272>, dense<64> : vector<4xi32>>, #dlti.dl_entry<!llvm.ptr<271>, dense<32> : vector<4xi32>>, #dlti.dl_entry<f64, dense<64> : vector<2xi32>>, #dlti.dl_entry<f128, dense<128> : vector<2xi32>>, #dlti.dl_entry<i64, dense<64> : vector<2xi32>>, #dlti.dl_entry<f80, dense<128> : vector<2xi32>>, #dlti.dl_entry<i1, dense<8> : vector<2xi32>>, #dlti.dl_entry<!llvm.ptr, dense<64> : vector<4xi32>>, #dlti.dl_entry<i16, dense<16> : vector<2xi32>>, #dlti.dl_entry<i8, dense<8> : vector<2xi32>>, #dlti.dl_entry<f16, dense<16> : vector<2xi32>>, #dlti.dl_entry<i32, dense<32> : vector<2xi32>>, #dlti.dl_entry<"dlti.stack_alignment", 128 : i32>, #dlti.dl_entry<"dlti.endianness", "little">>} {
+  llvm.func @_Z5func1v() -> (i32 {llvm.noundef}) attributes {passthrough = ["mustprogress", "noinline", "nounwind", "optnone", ["uwtable", "2"], ["frame-pointer", "all"], ["min-legal-vector-width", "0"], ["no-trapping-math", "true"], ["stack-protector-buffer-size", "8"], ["target-cpu", "x86-64"], ["target-features", "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"], ["tune-cpu", "generic"]]} {
+  // CHECK: llvm.func @_Z5func1v() {{.*}}attributes 
+  // CHECK-SAME: {{.*}}CallCount = 5 : i32
+    %0 = llvm.mlir.constant(1 : i32) : i32
+    %1 = llvm.mlir.constant(2 : i32) : i32
+    %2 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    llvm.store %1, %2 {alignment = 4 : i64} : i32, !llvm.ptr
+    %3 = llvm.load %2 {alignment = 4 : i64} : !llvm.ptr -> i32
+    %4 = llvm.add %3, %1  : i32
+    llvm.return %4 : i32
+  }
+  llvm.func @_Z5func2v() -> (i32 {llvm.noundef}) attributes {passthrough = ["mustprogress", "noinline", "nounwind", "optnone", ["uwtable", "2"], ["frame-pointer", "all"], ["min-legal-vector-width", "0"], ["no-trapping-math", "true"], ["stack-protector-buffer-size", "8"], ["target-cpu", "x86-64"], ["target-features", "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"], ["tune-cpu", "generic"]]} {
+  // CHECK: llvm.func @_Z5func2v() {{.*}}attributes
+  // CHECK-SAME: {{.*}}CallCount = 2 : i32
+    %0 = llvm.call @_Z5func1v() : () -> i32
+    %1 = llvm.call @_Z5func1v() : () -> i32
+    %2 = llvm.add %0, %1  : i32
+    llvm.return %2 : i32
+  }
+  llvm.func @_Z5func3v() attributes {passthrough = ["mustprogress", "noinline", "nounwind", "optnone", ["uwtable", "2"], ["frame-pointer", "all"], ["min-legal-vector-width", "0"], ["no-trapping-math", "true"], ["stack-protector-buffer-size", "8"], ["target-cpu", "x86-64"], ["target-features", "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"], ["tune-cpu", "generic"]]} {
+  // CHECK: llvm.func @_Z5func3v() {{.*}}attributes
+  // CHECK-SAME: {{.*}}CallCount = 0 : i32
+    %0 = llvm.mlir.constant(1 : i32) : i32
+    %1 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    %2 = llvm.call @_Z5func1v() : () -> i32
+    %3 = llvm.call @_Z5func2v() : () -> i32
+    %4 = llvm.add %2, %3  : i32
+    llvm.store %4, %1 {alignment = 4 : i64} : i32, !llvm.ptr
+    llvm.return
+  }
+  llvm.func @main() -> (i32 {llvm.noundef}) attributes {passthrough = ["mustprogress", "noinline", "norecurse", "nounwind", "optnone", ["uwtable", "2"], ["frame-pointer", "all"], ["min-legal-vector-width", "0"], ["no-trapping-math", "true"], ["stack-protector-buffer-size", "8"], ["target-cpu", "x86-64"], ["target-features", "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"], ["tune-cpu", "generic"]]} {
+  // CHECK: llvm.func @main() {{.*}}attributes
+  // CHECK-SAME: {{.*}}CallCount = 0 : i32
+    %0 = llvm.mlir.constant(1 : i32) : i32
+    %1 = llvm.mlir.constant(0 : i32) : i32
+    %2 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    %3 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    %4 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    %5 = llvm.alloca %0 x i32 {alignment = 4 : i64} : (i32) -> !llvm.ptr
+    llvm.store %1, %2 {alignment = 4 : i64} : i32, !llvm.ptr
+    %6 = llvm.call @_Z5func1v() : () -> i32
+    llvm.store %6, %3 {alignment = 4 : i64} : i32, !llvm.ptr
+    %7 = llvm.call @_Z5func2v() : () -> i32
+    llvm.store %7, %4 {alignment = 4 : i64} : i32, !llvm.ptr
+    %8 = llvm.call @_Z5func1v() : () -> i32
+    %9 = llvm.load %3 {alignment = 4 : i64} : !llvm.ptr -> i32
+    %10 = llvm.add %8, %9  : i32
+    %11 = llvm.load %4 {alignment = 4 : i64} : !llvm.ptr -> i32
+    %12 = llvm.add %10, %11  : i32
+    llvm.store %12, %5 {alignment = 4 : i64} : i32, !llvm.ptr
+    llvm.return %1 : i32
+  }
+}