gcc/testsuite/gcc.dg/ipa/remref-0.c

   1 /* Verify that indirect inlining machinery can remove references to functions
   2    passed as parameters that are never used.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-O3 -fno-early-inlining -fno-ipa-sra -fno-ipa-cp -fdump-ipa-inline -fdump-tree-optimized"  } */
   5
   6 extern int __attribute__ ((noinline, noclone, used))
   7 stuff (int i)
   8 {
   9   return 0;
  10 }
  11
  12 static void hooray ()
  13 {
  14   stuff (1);
  15 }
  16
  17 static int hiphip (void (*f)())
  18 {
  19   return stuff (2);
  20 }
  21
  22 int main (void)
  23 {
  24   return hiphip (hooray);
  25 }
  26
  27 /* { dg-final { scan-ipa-dump "ipa-prop: Removed a reference"  "inline"  } } */
  28 /* { dg-final { scan-tree-dump-not "hooray"  "optimized"  } } */
  29 /* { dg-final { cleanup-ipa-dump "inline" } } */
  30 /* { dg-final { cleanup-tree-dump "optimized" } } */