diff --git a/Sources/backends/metal.c b/Sources/backends/metal.c
index ae4055e..33b3001 100644
--- a/Sources/backends/metal.c
+++ b/Sources/backends/metal.c
@@ -48,79 +48,6 @@ static void write_code(char *metal, char *directory, const char *filename) {
 	fclose(file);
 }
 
-static void find_referenced_global_for_var(variable v, global_id *globals, size_t *globals_size) {
-	for (global_id j = 0; get_global(j).type != NO_TYPE; ++j) {
-		global g = get_global(j);
-		if (v.index == g.var_index) {
-			bool found = false;
-			for (size_t k = 0; k < *globals_size; ++k) {
-				if (globals[k] == j) {
-					found = true;
-					break;
-				}
-			}
-			if (!found) {
-				globals[*globals_size] = j;
-				*globals_size += 1;
-			}
-			return;
-		}
-	}
-}
-
-static void find_referenced_globals(function *f, global_id *globals, size_t *globals_size) {
-	if (f->block == NULL) {
-		// built-in
-		return;
-	}
-
-	function *functions[256];
-	size_t functions_size = 0;
-
-	functions[functions_size] = f;
-	functions_size += 1;
-
-	find_referenced_functions(f, functions, &functions_size);
-
-	for (size_t l = 0; l < functions_size; ++l) {
-		uint8_t *data = functions[l]->code.o;
-		size_t size = functions[l]->code.size;
-
-		size_t index = 0;
-		while (index < size) {
-			opcode *o = (opcode *)&data[index];
-			switch (o->type) {
-			case OPCODE_MULTIPLY:
-			case OPCODE_DIVIDE:
-			case OPCODE_ADD:
-			case OPCODE_SUB:
-			case OPCODE_EQUALS:
-			case OPCODE_NOT_EQUALS:
-			case OPCODE_GREATER:
-			case OPCODE_GREATER_EQUAL:
-			case OPCODE_LESS:
-			case OPCODE_LESS_EQUAL: {
-				find_referenced_global_for_var(o->op_binary.left, globals, globals_size);
-				find_referenced_global_for_var(o->op_binary.right, globals, globals_size);
-				break;
-			}
-			case OPCODE_LOAD_MEMBER: {
-				find_referenced_global_for_var(o->op_load_member.from, globals, globals_size);
-				break;
-			}
-			case OPCODE_CALL: {
-				for (uint8_t i = 0; i < o->op_call.parameters_size; ++i) {
-					find_referenced_global_for_var(o->op_call.parameters[i], globals, globals_size);
-				}
-				break;
-			}
-			}
-
-			index += o->size;
-		}
-	}
-}
-
 static type_id vertex_inputs[256];
 static size_t vertex_inputs_size = 0;
 static type_id fragment_inputs[256];
@@ -296,7 +223,7 @@ static void write_functions(char *code, size_t *offset) {
 					*offset += sprintf(&code[*offset], "\t%s _%i [[color(%i)]];\n", type_string(f->return_type.type), j, j);
 				}
 				*offset += sprintf(&code[*offset], "};\n\n");
-			
+
 				*offset += sprintf(&code[*offset], "fragment _kong_colors_out %s(%s _%" PRIu64 " [[stage_in]]", get_name(f->name),
 				                   type_string(f->parameter_types[0].type), parameter_ids[0]);
 				for (uint8_t parameter_index = 1; parameter_index < f->parameters_size; ++parameter_index) {
diff --git a/Sources/backends/util.c b/Sources/backends/util.c
index c99d804..1ae9231 100644
--- a/Sources/backends/util.c
+++ b/Sources/backends/util.c
@@ -12,6 +12,79 @@ void indent(char *code, size_t *offset, int indentation) {
 	*offset += sprintf(&code[*offset], str);
 }
 
+static void find_referenced_global_for_var(variable v, global_id *globals, size_t *globals_size) {
+	for (global_id j = 0; get_global(j).type != NO_TYPE; ++j) {
+		global g = get_global(j);
+		if (v.index == g.var_index) {
+			bool found = false;
+			for (size_t k = 0; k < *globals_size; ++k) {
+				if (globals[k] == j) {
+					found = true;
+					break;
+				}
+			}
+			if (!found) {
+				globals[*globals_size] = j;
+				*globals_size += 1;
+			}
+			return;
+		}
+	}
+}
+
+void find_referenced_globals(function *f, global_id *globals, size_t *globals_size) {
+	if (f->block == NULL) {
+		// built-in
+		return;
+	}
+
+	function *functions[256];
+	size_t functions_size = 0;
+
+	functions[functions_size] = f;
+	functions_size += 1;
+
+	find_referenced_functions(f, functions, &functions_size);
+
+	for (size_t l = 0; l < functions_size; ++l) {
+		uint8_t *data = functions[l]->code.o;
+		size_t size = functions[l]->code.size;
+
+		size_t index = 0;
+		while (index < size) {
+			opcode *o = (opcode *)&data[index];
+			switch (o->type) {
+			case OPCODE_MULTIPLY:
+			case OPCODE_DIVIDE:
+			case OPCODE_ADD:
+			case OPCODE_SUB:
+			case OPCODE_EQUALS:
+			case OPCODE_NOT_EQUALS:
+			case OPCODE_GREATER:
+			case OPCODE_GREATER_EQUAL:
+			case OPCODE_LESS:
+			case OPCODE_LESS_EQUAL: {
+				find_referenced_global_for_var(o->op_binary.left, globals, globals_size);
+				find_referenced_global_for_var(o->op_binary.right, globals, globals_size);
+				break;
+			}
+			case OPCODE_LOAD_MEMBER: {
+				find_referenced_global_for_var(o->op_load_member.from, globals, globals_size);
+				break;
+			}
+			case OPCODE_CALL: {
+				for (uint8_t i = 0; i < o->op_call.parameters_size; ++i) {
+					find_referenced_global_for_var(o->op_call.parameters[i], globals, globals_size);
+				}
+				break;
+			}
+			}
+
+			index += o->size;
+		}
+	}
+}
+
 void find_referenced_functions(function *f, function **functions, size_t *functions_size) {
 	if (f->block == NULL) {
 		// built-in
diff --git a/Sources/backends/util.h b/Sources/backends/util.h
index 56bc979..9f66f18 100644
--- a/Sources/backends/util.h
+++ b/Sources/backends/util.h
@@ -1,10 +1,12 @@
 #pragma once
 
 #include "../functions.h"
+#include "../globals.h"
 
 #include <stdint.h>
 
 void find_referenced_functions(function *f, function **functions, size_t *functions_size);
 void find_referenced_types(function *f, type_id *types, size_t *types_size);
+void find_referenced_globals(function *f, global_id *globals, size_t *globals_size);
 
 void indent(char *code, size_t *offset, int indentation);