fix x86

Author: spiessimon

backend/amd64/emit.ml

@@ -122,6 +122,9 @@ let to_x86_directive (dir : ND.Directive.t) : X86_ast.asm_line list =
   | Cfi_endproc -> [X86_ast.Cfi_endproc]
   | Cfi_offset { reg; offset } -> [X86_ast.Cfi_offset (reg, offset)]
   | Cfi_startproc -> [X86_ast.Cfi_startproc]
+  | Cfi_remember_state -> [X86_ast.Cfi_remember_state]
+  | Cfi_restore_state -> [X86_ast.Cfi_restore_state]
+  | Cfi_def_cfa_register r -> [X86_ast.Cfi_def_cfa_register r]
   | Protected s -> [X86_ast.Protected s]
 
 let _label s = D.label ~typ:QWORD s