deadcode(fun.f)

	CheckFunc(fun.f)
	foundDifferentCheck := false
	for _, b := range fun.f.Blocks {
		if b == fun.blocks["secondCheck"] && isNilCheck(b) {
			t.Errorf("secondCheck was not eliminated")
		}
		if b == fun.blocks["differentCheck"] && isNilCheck(b) {
			foundDifferentCheck = true
		}
	}
	if !foundDifferentCheck {
		t.Errorf("removed differentCheck, but shouldn't have")
	}
}