[sledge] Model operator new[](unsigned long)

Reviewed By: jvillard

Differential Revision: D25196731

fbshipit-source-id: e6f9f6f22

sledge/cli/frontend.ml

@@ -982,6 +982,7 @@ let xlate_intrinsic_inst emit_inst x name_segs instr num_actuals loc =
       in
       let len = 1 in
       emit_inst ~prefix (Inst.alloc ~reg ~num ~len ~loc)
+  | ["_Znam" (* operator new[](unsigned long) *)]
    |["_Znwm" (* operator new(size_t num) *)]
    |[ "_ZnwmSt11align_val_t"
       (* operator new(unsigned long, std::align_val_t) *) ]