gcc/testsuite/gcc.dg/vect/vect-bitfield-write-2.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 a : 4;
  13 };
  14
  15 #define N 32
  16 #define V 5
  17 struct s A[N];
  18
  19 void __attribute__ ((noipa))
  20 f(struct s *ptr, unsigned n) {
  21     for (int i = 0; i < n; ++i)
  22       ptr[i].a = V;
  23 }
  24
  25 void __attribute__ ((noipa))
  26 check_f(struct s *ptr) {
  27 #pragma GCC novector
  28     for (unsigned i = 0; i < N; ++i)
  29       if (ptr[i].a != V)
  30         abort ();
  31 }
  32
  33 int main (void)
  34 {
  35   check_vect ();
  36   __builtin_memset (&A[0], 0, sizeof(struct s) * N);
  37
  38   f(&A[0], N);
  39   check_f (&A[0]);
  40
  41   return 0;
  42 }
  43
  44 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  45
  46 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */