gcc/testsuite/gcc.dg/vect/pr64404.c

   1 /* { dg-additional-options "--param=sccvn-max-alias-queries-per-access=1" } */
   2
   3 #include "tree-vect.h"
   4
   5 extern void abort (void);
   6
   7 typedef struct
   8 {
   9   int l, h;
  10 } tFPinterval;
  11
  12 tFPinterval X[1024];
  13 tFPinterval Y[1024];
  14 tFPinterval Z[1024];
  15
  16 void __attribute__((noinline))
  17 Compute (void)
  18 {
  19   int d;
  20   for (d = 0; d < 1024; d++)
  21     {
  22       Y[d].l = X[d].l + X[d].h;
  23       Y[d].h = Y[d].l;
  24       Z[d].l = X[d].l;
  25       Z[d].h = X[d].h;
  26     }
  27 }
  28
  29 int
  30 main (void)
  31 {
  32   int d;
  33
  34   check_vect ();
  35
  36   for (d = 0; d < 1024; d++)
  37     {
  38       X[d].l = d;
  39       X[d].h = d + 1;
  40       __asm__ volatile ("");
  41     }
  42
  43   Compute ();
  44
  45 #pragma GCC novector
  46   for (d = 0; d < 1024; d++)
  47     {
  48       if (Y[d].l != X[d].l + X[d].h
  49          || Y[d].h != Y[d].l
  50          || Z[d].l != X[d].l
  51          || Z[d].h != X[d].h)
  52         abort ();
  53       __asm__ volatile ("");
  54     }
  55
  56   return 0;
  57 }
  58