gcc/gcc/testsuite/gcc.dg/completion-1.c

/* { dg-do compile } */
/* { dg-options "--completion=-fipa-ic" } */

/* { dg-begin-multiline-output "" }
-fipa-icf
-fipa-icf-functions
-fipa-icf-variables
   { dg-end-multiline-output "" } */