A function call via a function pointer can be written like: fp(), (fp)() or (*fp)() In the latter case the dereference is unneeded but legal and idiomatic. However, the linearization doesn't handle this unneeded deref and leads to the generation of a load of the pointer: int foo(int a, int (*fun)(int)) { (*fun)(a); } gives something like: foo: load %r2 <- 0[%arg2] call.32 %r3 <- %r2, %arg1 ret.32 %r3 This happens because, at linearization, the deref is dropped but only if the sub-expression is a symbol and the test for node is not done. Fix this by using is_func_type() to test the type of all call expressions. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>