gcc/testsuite/gcc.c-torture/execute/pr28982b.c

   1 /* { dg-require-stack-size "0x80100" } */
   2
   3 /* Like pr28982a.c, but with the spill slots outside the range of
   4    a single sp-based load on ARM.  This test tests for cases where
   5    the addresses in the base and index reloads require further reloads.  */
   6 #define NITER 4
   7 #define NVARS 20
   8 #define MULTI(X) \
   9   X( 0), X( 1), X( 2), X( 3), X( 4), X( 5), X( 6), X( 7), X( 8), X( 9), \
  10   X(10), X(11), X(12), X(13), X(14), X(15), X(16), X(17), X(18), X(19)
  11
  12 #define DECLAREI(INDEX) inc##INDEX = incs[INDEX]
  13 #define DECLAREF(INDEX) *ptr##INDEX = ptrs[INDEX], result##INDEX = 0
  14 #define LOOP(INDEX) result##INDEX += *ptr##INDEX, ptr##INDEX += inc##INDEX
  15 #define COPYOUT(INDEX) results[INDEX] = result##INDEX
  16
  17 float *ptrs[NVARS];
  18 float results[NVARS];
  19 int incs[NVARS];
  20
  21 struct big { int i[0x10000]; };
  22 void __attribute__((noinline))
  23 bar (struct big b)
  24 {
  25   incs[0] += b.i[0];
  26 }
  27
  28 void __attribute__((noinline))
  29 foo (int n)
  30 {
  31   struct big b = {};
  32   int MULTI (DECLAREI);
  33   float MULTI (DECLAREF);
  34   while (n--)
  35     MULTI (LOOP);
  36   MULTI (COPYOUT);
  37   bar (b);
  38 }
  39
  40 float input[NITER * NVARS];
  41
  42 int
  43 main (void)
  44 {
  45   int i;
  46
  47   for (i = 0; i < NVARS; i++)
  48     ptrs[i] = input + i, incs[i] = i;
  49   for (i = 0; i < NITER * NVARS; i++)
  50     input[i] = i;
  51   foo (NITER);
  52   for (i = 0; i < NVARS; i++)
  53     if (results[i] != i * NITER * (NITER + 1) / 2)
  54       return 1;
  55   return 0;
  56 }