gcc/testsuite/gcc.dg/ipa/ipa-pta-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -fipa-pta -fdump-ipa-pta2-details" } */
   3
   4 static int __attribute__((noinline))
   5 foo (int *p, int *q)
   6 {
   7   *p = 2;
   8   *q = 1;
   9   return *p;
  10 }
  11
  12 static int __attribute__((noinline))
  13 bar (int *p, int *q)
  14 {
  15   *p = -2;
  16   *q = -1;
  17   return *p;
  18 }
  19
  20 static int __attribute__((noinline,noclone))
  21 foobar (int foo_p)
  22 {
  23   int a;
  24   int (*fn)(int *, int *);
  25   if (foo_p)
  26     fn = foo;
  27   else
  28     fn = bar;
  29   return (*fn)(&a, &a);
  30 }
  31
  32 extern void abort (void);
  33
  34 int main()
  35 {
  36   if (foobar (1) != 1)
  37     abort ();
  38
  39   return 0;
  40 }
  41
  42 /* IPA PTA needs to handle indirect calls properly.  Verify that
  43    both bar and foo get a (and only a) in their arguments points-to sets.  */
  44
  45 /* { dg-final { scan-ipa-dump "fn_1 = { bar foo }" "pta2" } } */
  46 /* { dg-final { scan-ipa-dump "bar.arg0 = { a }" "pta2" } } */
  47 /* { dg-final { scan-ipa-dump "bar.arg1 = { a }" "pta2" } } */
  48 /* { dg-final { scan-ipa-dump "foo.arg0 = { a }" "pta2" } } */
  49 /* { dg-final { scan-ipa-dump "foo.arg1 = { a }" "pta2" } } */