gcc/testsuite/gcc.dg/torture/tls/tls-reload-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target tls_runtime } */
   3 /* { dg-add-options tls } */
   4
   5 #define ARRAY(X) X##_array
   6 #define DECLARE(X) \
   7   __thread int X; \
   8   __thread int ARRAY(X)[4]; \
   9   int *volatile *__attribute__((noinline)) \
  10   check##X (int *volatile *y) \
  11   { \
  12     if (!y || *y++ != &X || *y++ != &ARRAY(X)[3]) \
  13       return 0; \
  14     return y; \
  15   }
  16 #define COPY(X) *y++ = &X; *y++ = &ARRAY(X)[3];
  17 #define CHECK(X) y = check##X (y);
  18 #define A(M, X) M(X##0) M(X##1) M(X##2) M(X##3) M(X##4) M(X##5) M(X##6) M(X##7)
  19 #define B(M, X) A(M, X##0) A(M, X##1) A(M, X##2)
  20 #define C(M, X) B(M, X) B(M, X) B(M, X)
  21
  22 #define NM 2
  23 #define NA (NM * 8)
  24 #define NB (NA * 3)
  25 #define NC (NB * 3)
  26
  27 extern void abort (void);
  28
  29 B(DECLARE, tls)
  30
  31 void __attribute__ ((noinline))
  32 setup (int *volatile *y)
  33 {
  34   C(COPY, tls)
  35 }
  36
  37 int
  38 main (void)
  39 {
  40   int *volatile array[NC];
  41   int *volatile *y = array;
  42   int i;
  43
  44   setup (array);
  45   C(CHECK, tls);
  46   if (!y)
  47     abort ();
  48   return 0;
  49 }