gcc/testsuite/gcc.dg/ipa/ipa-sra-7.c

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