gcc/testsuite/gcc.dg/sms-5.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fmodulo-sched -fmodulo-sched-allow-regmoves -funroll-loops -fdump-rtl-sms --param sms-min-sc=1" } */
   3 /* This is the same test as loop-2e.c test.  It is related to a fix in
   4    the generation of the prolog and epilog.  */
   5
   6 extern void abort (void);
   7
   8 __attribute__ ((noinline))
   9 void f (int *p, int **q)
  10 {
  11   int i;
  12   for (i = 0; i < 40; i++)
  13     {
  14       *q++ = &p[i];
  15     }
  16 }
  17
  18 int main ()
  19 {
  20   void *p;
  21   int *q[40];
  22   __SIZE_TYPE__ start;
  23
  24   /* Find the signed middle of the address space.  */
  25   if (sizeof(start) == sizeof(int))
  26     start = (__SIZE_TYPE__) __INT_MAX__;
  27   else if (sizeof(start) == sizeof(long))
  28     start = (__SIZE_TYPE__) __LONG_MAX__;
  29   else if (sizeof(start) == sizeof(long long))
  30     start = (__SIZE_TYPE__) __LONG_LONG_MAX__;
  31   else
  32     return 0;
  33
  34   /* Arbitrarily align the pointer.  */
  35   start &= -32;
  36
  37   /* Pretend that's good enough to start address arithmetic.  */
  38   p = (void *)start;
  39
  40   /* Verify that GIV replacement computes the correct results.  */
  41   q[39] = 0;
  42   f (p, q);
  43   if (q[39] != (int *)p + 39)
  44     abort ();
  45
  46   return 0;
  47 }
  48
  49
  50