gcc/testsuite/c-c++-common/torture/strub-const2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstrub=strict -fdump-ipa-strub" } */
   3 /* { dg-require-effective-target strub } */
   4
   5 /* Check that, along with a strub implicitly-const function call, we issue an
   6    asm statement to make sure the watermark passed to it is held in memory
   7    before the call, and another to make sure it is not assumed to be
   8    unchanged.  */
   9
  10 extern int __attribute__ ((__strub__ ("callable"),
  11                            __const__, __nothrow__)) c ();
  12
  13 int __attribute__ ((__strub__))
  14 #if ! __OPTIMIZE__
  15 __attribute__ ((__const__))
  16 #endif
  17 f () {
  18   return c ();
  19 }
  20
  21 int
  22 g () {
  23   return f ();
  24 }
  25
  26 /* { dg-final { scan-ipa-dump-times "__asm__" 2 "strub" } } */