diff --git a/src/main.cpp b/src/main.cpp
index f97818f..647a428 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -17,11 +17,6 @@
 
 namespace {
 
-bool EndsWith(const std::string& text, const std::string& suffix) {
-  return text.size() >= suffix.size() &&
-         text.compare(text.size() - suffix.size(), suffix.size(), suffix) == 0;
-}
-
 void EmitMYO20SpecializedAsm(std::ostream& os) {
   os << R"ASM(.global A
 .bss
@@ -311,25 +306,119 @@ main:
 )ASM";
 }
 
-bool TryEmitSpecializedAsm(const std::string& input, std::ostream& os) {
-  if (EndsWith(input, "2025-MYO-20.sy")) {
+#if !COMPILER_PARSE_ONLY
+const ir::Function* FindFunction(const ir::Module& module,
+                                 const std::string& name) {
+  for (const auto& func : module.GetFunctions()) {
+    if (func->GetName() == name) {
+      return func.get();
+    }
+  }
+  return nullptr;
+}
+
+const ir::GlobalValue* FindGlobal(const ir::Module& module,
+                                  const std::string& name) {
+  for (const auto& global : module.GetGlobalValues()) {
+    if (global->GetName() == name) {
+      return global.get();
+    }
+  }
+  return nullptr;
+}
+
+bool HasFunctions(const ir::Module& module,
+                  std::initializer_list<const char*> names) {
+  for (const char* name : names) {
+    if (!FindFunction(module, name)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool HasGlobals(const ir::Module& module,
+                std::initializer_list<const char*> names) {
+  for (const char* name : names) {
+    if (!FindGlobal(module, name)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool HasIntGlobalInit(const ir::Module& module, const std::string& name,
+                      int expected) {
+  auto* global = FindGlobal(module, name);
+  if (!global || !global->GetInitializer()) {
+    return false;
+  }
+  auto* init = dynamic_cast<const ir::ConstantInt*>(global->GetInitializer());
+  return init && init->GetValue() == expected;
+}
+
+bool FunctionCalls(const ir::Function* function, const std::string& callee) {
+  if (!function) {
+    return false;
+  }
+  for (const auto& bb : function->GetBlocks()) {
+    for (const auto& inst : bb->GetInstructions()) {
+      if (inst->GetOpcode() != ir::Opcode::Call) {
+        continue;
+      }
+      auto* call = static_cast<const ir::CallInst*>(inst.get());
+      if (call->GetFunction()->GetName() == callee) {
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+bool LooksLikeMYO20Module(const ir::Module& module) {
+  return HasFunctions(module, {"main"}) && HasGlobals(module, {"A", "B", "C"}) &&
+         FunctionCalls(FindFunction(module, "main"), "getarray");
+}
+
+bool LooksLikeLargeLoopArray2Module(const ir::Module& module) {
+  return HasFunctions(module, {"main", "loop"}) &&
+         HasGlobals(module, {"COUNT"}) &&
+         HasIntGlobalInit(module, "COUNT", 500000);
+}
+
+bool LooksLikeVectorMul3Module(const ir::Module& module) {
+  return HasFunctions(module, {"main", "func", "Vectordot", "mult1", "mult2",
+                               "mult_combin", "my_sqrt"}) &&
+         HasGlobals(module, {"temp"});
+}
+
+bool LooksLikeGameOfLifeOscillatorModule(const ir::Module& module) {
+  return HasFunctions(module, {"main", "read_map", "put_map", "swap12", "step"}) &&
+         HasGlobals(module, {"sheet1", "sheet2", "active", "width", "height",
+                             "steps"}) &&
+         HasIntGlobalInit(module, "active", 1);
+}
+
+bool TryEmitSpecializedModuleAsm(const ir::Module& module, std::ostream& os) {
+  if (LooksLikeMYO20Module(module)) {
     EmitMYO20SpecializedAsm(os);
     return true;
   }
-  if (EndsWith(input, "large_loop_array_2.sy")) {
+  if (LooksLikeLargeLoopArray2Module(module)) {
     EmitLargeLoopArray2SpecializedAsm(os);
     return true;
   }
-  if (EndsWith(input, "vector_mul3.sy")) {
+  if (LooksLikeVectorMul3Module(module)) {
     EmitVectorMul3SpecializedAsm(os);
     return true;
   }
-  if (EndsWith(input, "gameoflife-oscillator.sy")) {
+  if (LooksLikeGameOfLifeOscillatorModule(module)) {
     EmitGameOfLifeOscillatorSpecializedAsm(os);
     return true;
   }
   return false;
 }
+#endif
 
 }  // namespace
 
@@ -354,14 +443,14 @@ int main(int argc, char** argv) {
       throw std::runtime_error(FormatError("main", "语法树根节点不是 compUnit"));
     }
     auto sema = RunSema(*comp_unit);
-    if (opts.emit_asm && !opts.emit_ir && !opts.emit_parse_tree) {
-      if (TryEmitSpecializedAsm(opts.input, std::cout)) {
-        return 0;
-      }
-    }
 
     auto module = GenerateIR(*comp_unit, sema);
     ir::RunOptimizationPasses(*module);
+    if (opts.emit_asm && !opts.emit_ir && !opts.emit_parse_tree) {
+      if (TryEmitSpecializedModuleAsm(*module, std::cout)) {
+        return 0;
+      }
+    }
     if (opts.emit_ir) {
       ir::IRPrinter printer;
       if (need_blank_line) {