1 files changed, 4 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp b/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
index 433e6cd807..f90304190b 100644
--- a/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
@@ -10,6 +10,7 @@
 #include <LibJS/Bytecode/BasicBlock.h>
 #include <LibJS/Bytecode/Generator.h>
 #include <LibJS/Bytecode/Interpreter.h>
+#include <LibJS/Bytecode/PassManager.h>
 #include <LibJS/Interpreter.h>
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/Error.h>
@@ -159,7 +160,10 @@ Value ScriptFunction::execute_function_body()
         prepare_arguments();
         if (!m_bytecode_executable.has_value()) {
             m_bytecode_executable = Bytecode::Generator::generate(m_body, m_kind == FunctionKind::Generator);
+            auto& passes = JS::Bytecode::Interpreter::optimization_pipeline();
+            passes.perform(*m_bytecode_executable);
             if constexpr (JS_BYTECODE_DEBUG) {
+                dbgln("Optimisation passes took {}us", passes.elapsed());
                 dbgln("Compiled Bytecode::Block for function '{}':", m_name);
                 for (auto& block : m_bytecode_executable->basic_blocks)
                     block.dump(*m_bytecode_executable);