gcc/testsuite/gcc.dg/vect/vect-bitfield-write-3.c

   1 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   2 /* { dg-require-effective-target vect_int } */
   3 /* { dg-require-effective-target vect_long_long } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 extern void abort(void);
   9
  10 struct s {
  11     unsigned i : 31;
  12     char x : 2;
  13     char a : 4;
  14 };
  15
  16 #define N 32
  17 #define V 5
  18 struct s A[N];
  19
  20 void __attribute__ ((noipa))
  21 f(struct s *ptr, unsigned n) {
  22     for (int i = 0; i < n; ++i)
  23       ptr[i].a = V;
  24 }
  25
  26 void __attribute__ ((noipa))
  27 check_f(struct s *ptr) {
  28 #pragma GCC novector
  29     for (unsigned i = 0; i < N; ++i)
  30       if (ptr[i].a != V)
  31         abort ();
  32 }
  33
  34 int main (void)
  35 {
  36   check_vect ();
  37   __builtin_memset (&A[0], 0, sizeof(struct s) * N);
  38
  39   f(&A[0], N);
  40   check_f (&A[0]);
  41
  42   return 0;
  43 }
  44
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  46
  47 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */