gcc/testsuite/gcc.dg/vect/vect-bitfield-write-4.c

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