gcc/testsuite/gcc.dg/tree-ssa/alias-36.c

   1 /* PR tree-optimization/80934 - bzero should be assumed not to escape
   2    pointer argument
   3    { dg-do compile }
   4    { dg-options "-O2 -fdump-tree-alias" } */
   5
   6 void foobar (void);
   7
   8 void f (void);
   9
  10 void g (void)
  11 {
  12   char d[32];
  13   __builtin_memset (d, 0, sizeof d);
  14   f ();
  15   if (*d != 0)
  16     foobar ();
  17 }
  18
  19 void h (void)
  20 {
  21   char d[32];
  22   __builtin_bzero (d, sizeof d);
  23   f ();
  24   if (*d != 0)
  25     foobar ();
  26 }
  27
  28 /* { dg-final { scan-tree-dump-not "memset|foobar|bzero" "alias" } } */