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

   1 /* Like pr28982a.c, but with the spill slots outside the range of
   2    a single sp-based load on ARM.  This test tests for cases where
   3    the addresses in the base and index reloads require further reloads.  */
   4 #if defined(STACK_SIZE) && STACK_SIZE <= 0x80100
   5 int main (void) { return 0; }
   6 #else
   7 #define NITER 4
   8 #define NVARS 20
   9 #define MULTI(X) \
  10   X( 0), X( 1), X( 2), X( 3), X( 4), X( 5), X( 6), X( 7), X( 8), X( 9), \
  11   X(10), X(11), X(12), X(13), X(14), X(15), X(16), X(17), X(18), X(19)
  12
  13 #define DECLAREI(INDEX) inc##INDEX = incs[INDEX]
  14 #define DECLAREF(INDEX) *ptr##INDEX = ptrs[INDEX], result##INDEX = 0
  15 #define LOOP(INDEX) result##INDEX += *ptr##INDEX, ptr##INDEX += inc##INDEX
  16 #define COPYOUT(INDEX) results[INDEX] = result##INDEX
  17
  18 float *ptrs[NVARS];
  19 float results[NVARS];
  20 int incs[NVARS];
  21
  22 struct big { int i[0x10000]; };
  23 void __attribute__((noinline))
  24 bar (struct big b)
  25 {
  26   incs[0] += b.i[0];
  27 }
  28
  29 void __attribute__((noinline))
  30 foo (int n)
  31 {
  32   struct big b = {};
  33   int MULTI (DECLAREI);
  34   float MULTI (DECLAREF);
  35   while (n--)
  36     MULTI (LOOP);
  37   MULTI (COPYOUT);
  38   bar (b);
  39 }
  40
  41 float input[NITER * NVARS];
  42
  43 int
  44 main (void)
  45 {
  46   int i;
  47
  48   for (i = 0; i < NVARS; i++)
  49     ptrs[i] = input + i, incs[i] = i;
  50   for (i = 0; i < NITER * NVARS; i++)
  51     input[i] = i;
  52   foo (NITER);
  53   for (i = 0; i < NVARS; i++)
  54     if (results[i] != i * NITER * (NITER + 1) / 2)
  55       return 1;
  56   return 0;
  57 }
  58 #endif