diff --git a/CMakeLists.txt b/CMakeLists.txt
index 835f891e..fa6d4d91 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ include_directories(
   src/frontend/imgui
   src/backend
   src/backend/core
+  src/backend/core/JIT
   src/backend/core/mmio
   src/backend/core/registers
   src/backend/core/rsp
diff --git a/src/backend/core/JIT/IR.cpp b/src/backend/core/JIT/IR.cpp
new file mode 100644
index 00000000..195fc2d4
--- /dev/null
+++ b/src/backend/core/JIT/IR.cpp
@@ -0,0 +1,15 @@
+#include <IR.hpp>
+
+namespace n64 {
+void IR::push(const Entry& e) {
+	code.push_back(e);
+}
+
+auto IR::begin() {
+	return code.begin();
+}
+
+auto IR::end() {
+	return code.end();
+}
+}
\ No newline at end of file
diff --git a/src/backend/core/JIT/IR.hpp b/src/backend/core/JIT/IR.hpp
new file mode 100644
index 00000000..2f43e217
--- /dev/null
+++ b/src/backend/core/JIT/IR.hpp
@@ -0,0 +1,24 @@
+#pragma once
+#include <common.hpp>
+#include <vector>
+
+namespace n64 {
+struct Entry {
+	u16 type;
+	struct Operand {
+		enum {
+			REG_S64, REG_S32, REG_U64, REG_U32, REG_U5, IMM_S16,
+			IMM_S32, IMM_S64, IMM_U16, IMM_U32, IMM_U64, IMM_U5,
+		} type;
+		u8 index;
+	} dst, op1, op2;
+};
+
+struct IR {
+	void push(const Entry&);
+	auto begin();
+	auto end();
+private:
+	std::vector<Entry> code{};
+};
+}
\ No newline at end of file