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 SS __attribute__((aligned(1))) SSS;
  11
  12 typedef struct U {
  13   SS s[2];
  14 } UU;
  15
  16 typedef UU __attribute__((aligned(1))) UUU;
  17
  18 static unsigned int __attribute__ ((noinline))
  19 get_a (SSS s)
  20 {
  21   return s.a;
  22 };
  23
  24 static int __attribute__ ((noinline, noclone))
  25 foo (UUU *p)
  26 {
  27   int r = (int) get_a(p->s[0]) + 2;
  28   return r;
  29 }
  30
  31 char buf[512];
  32
  33 static UUU * __attribute__ ((noinline, noclone))
  34 get_uuu (void)
  35 {
  36   return (UUU *)(buf + 1);
  37 }
  38
  39 int
  40 main(int argc, char *argv[])
  41 {
  42   UUU *p = get_uuu();
  43   if (foo(p) != 2)
  44     __builtin_abort ();
  45   return 0;
  46 }