gcc/testsuite/gcc.dg/ipa/ipa-sra-9.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3" } */
   3
   4 typedef unsigned int myint __attribute__((aligned(1)));
   5
   6 typedef struct S {
   7   unsigned a, b, c;
   8 } SS;
   9
  10 typedef struct U {
  11   SS s[2];
  12 } UU;
  13
  14 typedef UU __attribute__((aligned(1))) UUU;
  15
  16 static unsigned int __attribute__ ((noinline))
  17 get_a (SS s)
  18 {
  19   return s.a;
  20 };
  21
  22 static int __attribute__ ((noinline, noclone))
  23 foo (UUU *p)
  24 {
  25   int r = (int) get_a(p->s[0]) + 2;
  26   return r;
  27 }
  28
  29 char buf[512];
  30
  31 static UUU * __attribute__ ((noinline, noclone))
  32 get_uuu (void)
  33 {
  34   return (UUU *)(buf + 1);
  35 }
  36
  37 int
  38 main(int argc, char *argv[])
  39 {
  40   UUU *p = get_uuu();
  41   if (foo(p) != 2)
  42     __builtin_abort ();
  43   return 0;
  44 }