gcc/testsuite/gcc.dg/attr-flatten-1.c

   1 /* { dg-require-alias "" } */
   2 int fn2(int);
   3 int fn3(int);
   4
   5 __attribute__((flatten))
   6 int fn1(int p1)
   7 {
   8   int a = fn2(p1);
   9   return fn3(a);
  10 }
  11 __attribute__((flatten))
  12 __attribute__((alias("fn1")))
  13 int fn4(int p1);
  14
  15 /* Again, but this time the target doesn't have the attribute.  */
  16 int fn1a(int p1)
  17 {
  18   int a = fn2(p1);
  19   return fn3(a);
  20 }
  21 __attribute__((flatten))
  22 __attribute__((alias("fn1a")))
  23 int fn4a(int p1); /* { dg-warning "ignored" } */
  24
  25 int
  26 test ()
  27 {
  28   return fn4(1)+fn4a(1);
  29 }