diff --git a/scripts/gcc-plugins/gcc-generate-gimple-pass.h b/scripts/gcc-plugins/gcc-generate-gimple-pass.h
new file mode 100644
index 0000000..f20797e
--- /dev/null
+++ b/scripts/gcc-plugins/gcc-generate-gimple-pass.h
@@ -0,0 +1,176 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Generator for GIMPLE pass related boilerplate code/data
+ *
+ * Supports gcc 4.5-6
+ *
+ * Usage:
+ *
+ * 1. before inclusion define PASS_NAME
+ * 2. before inclusion define NO_* for unimplemented callbacks
+ *    NO_GATE
+ *    NO_EXECUTE
+ * 3. before inclusion define PROPERTIES_* and TODO_FLAGS_* to override
+ *    the default 0 values
+ * 4. for convenience, all the above will be undefined after inclusion!
+ * 5. the only exported name is make_PASS_NAME_pass() to register with gcc
+ */
+
+#ifndef PASS_NAME
+#error at least PASS_NAME must be defined
+#else
+#define __GCC_PLUGIN_STRINGIFY(n)	#n
+#define _GCC_PLUGIN_STRINGIFY(n)	__GCC_PLUGIN_STRINGIFY(n)
+#define _GCC_PLUGIN_CONCAT2(x, y)	x ## y
+#define _GCC_PLUGIN_CONCAT3(x, y, z)	x ## y ## z
+
+#define __PASS_NAME_PASS_DATA(n)	_GCC_PLUGIN_CONCAT2(n, _pass_data)
+#define _PASS_NAME_PASS_DATA		__PASS_NAME_PASS_DATA(PASS_NAME)
+
+#define __PASS_NAME_PASS(n)		_GCC_PLUGIN_CONCAT2(n, _pass)
+#define _PASS_NAME_PASS			__PASS_NAME_PASS(PASS_NAME)
+
+#define _PASS_NAME_NAME			_GCC_PLUGIN_STRINGIFY(PASS_NAME)
+
+#define __MAKE_PASS_NAME_PASS(n)	_GCC_PLUGIN_CONCAT3(make_, n, _pass)
+#define _MAKE_PASS_NAME_PASS		__MAKE_PASS_NAME_PASS(PASS_NAME)
+
+#ifdef NO_GATE
+#define _GATE NULL
+#define _HAS_GATE false
+#else
+#define __GATE(n)			_GCC_PLUGIN_CONCAT2(n, _gate)
+#define _GATE				__GATE(PASS_NAME)
+#define _HAS_GATE true
+#endif
+
+#ifdef NO_EXECUTE
+#define _EXECUTE NULL
+#define _HAS_EXECUTE false
+#else
+#define __EXECUTE(n)			_GCC_PLUGIN_CONCAT2(n, _execute)
+#define _EXECUTE			__EXECUTE(PASS_NAME)
+#define _HAS_EXECUTE true
+#endif
+
+#ifndef PROPERTIES_REQUIRED
+#define PROPERTIES_REQUIRED 0
+#endif
+
+#ifndef PROPERTIES_PROVIDED
+#define PROPERTIES_PROVIDED 0
+#endif
+
+#ifndef PROPERTIES_DESTROYED
+#define PROPERTIES_DESTROYED 0
+#endif
+
+#ifndef TODO_FLAGS_START
+#define TODO_FLAGS_START 0
+#endif
+
+#ifndef TODO_FLAGS_FINISH
+#define TODO_FLAGS_FINISH 0
+#endif
+
+#if BUILDING_GCC_VERSION >= 4009
+namespace {
+static const pass_data _PASS_NAME_PASS_DATA = {
+#else
+static struct gimple_opt_pass _PASS_NAME_PASS = {
+	.pass = {
+#endif
+		.type			= GIMPLE_PASS,
+		.name			= _PASS_NAME_NAME,
+#if BUILDING_GCC_VERSION >= 4008
+		.optinfo_flags		= OPTGROUP_NONE,
+#endif
+#if BUILDING_GCC_VERSION >= 5000
+#elif BUILDING_GCC_VERSION == 4009
+		.has_gate		= _HAS_GATE,
+		.has_execute		= _HAS_EXECUTE,
+#else
+		.gate			= _GATE,
+		.execute		= _EXECUTE,
+		.sub			= NULL,
+		.next			= NULL,
+		.static_pass_number	= 0,
+#endif
+		.tv_id			= TV_NONE,
+		.properties_required	= PROPERTIES_REQUIRED,
+		.properties_provided	= PROPERTIES_PROVIDED,
+		.properties_destroyed	= PROPERTIES_DESTROYED,
+		.todo_flags_start	= TODO_FLAGS_START,
+		.todo_flags_finish	= TODO_FLAGS_FINISH,
+#if BUILDING_GCC_VERSION < 4009
+	}
+#endif
+};
+
+#if BUILDING_GCC_VERSION >= 4009
+class _PASS_NAME_PASS : public gimple_opt_pass {
+public:
+	_PASS_NAME_PASS() : gimple_opt_pass(_PASS_NAME_PASS_DATA, g) {}
+
+#ifndef NO_GATE
+#if BUILDING_GCC_VERSION >= 5000
+	virtual bool gate(function *) { return _GATE(); }
+#else
+	virtual bool gate(void) { return _GATE(); }
+#endif
+#endif
+
+	virtual opt_pass * clone () { return new _PASS_NAME_PASS(); }
+
+#ifndef NO_EXECUTE
+#if BUILDING_GCC_VERSION >= 5000
+	virtual unsigned int execute(function *) { return _EXECUTE(); }
+#else
+	virtual unsigned int execute(void) { return _EXECUTE(); }
+#endif
+#endif
+};
+}
+
+opt_pass *_MAKE_PASS_NAME_PASS(void)
+{
+	return new _PASS_NAME_PASS();
+}
+#else
+struct opt_pass *_MAKE_PASS_NAME_PASS(void)
+{
+	return &_PASS_NAME_PASS.pass;
+}
+#endif
+
+/* clean up user provided defines */
+#undef PASS_NAME
+#undef NO_GATE
+#undef NO_EXECUTE
+
+#undef PROPERTIES_DESTROYED
+#undef PROPERTIES_PROVIDED
+#undef PROPERTIES_REQUIRED
+#undef TODO_FLAGS_FINISH
+#undef TODO_FLAGS_START
+
+/* clean up generated defines */
+#undef _EXECUTE
+#undef __EXECUTE
+#undef _GATE
+#undef __GATE
+#undef _GCC_PLUGIN_CONCAT2
+#undef _GCC_PLUGIN_CONCAT3
+#undef _GCC_PLUGIN_STRINGIFY
+#undef __GCC_PLUGIN_STRINGIFY
+#undef _HAS_EXECUTE
+#undef _HAS_GATE
+#undef _MAKE_PASS_NAME_PASS
+#undef __MAKE_PASS_NAME_PASS
+#undef _PASS_NAME_NAME
+#undef _PASS_NAME_PASS
+#undef __PASS_NAME_PASS
+#undef _PASS_NAME_PASS_DATA
+#undef __PASS_NAME_PASS_DATA
+
+#endif /* PASS_NAME */