gcc/testsuite/gcc.dg/vect/vect-bitfield-read-6.c

   1 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   2 /* { dg-require-effective-target vect_int } */
   3 /* { dg-require-effective-target vect_shift } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 extern void abort(void);
   9
  10 struct s {
  11     unsigned a : 23; unsigned b : 8;
  12 };
  13
  14 #define N 32
  15 #define ELT0 {0x7FFFFFUL, 0}
  16 #define ELT1 {0x7FFFFFUL, 1}
  17 #define ELT2 {0x7FFFFFUL, 2}
  18 #define ELT3 {0x7FFFFFUL, 3}
  19 #define RES 48
  20 struct s A[N]
  21   = { ELT0, ELT1, ELT2, ELT3, ELT0, ELT1, ELT2, ELT3,
  22       ELT0, ELT1, ELT2, ELT3, ELT0, ELT1, ELT2, ELT3,
  23       ELT0, ELT1, ELT2, ELT3, ELT0, ELT1, ELT2, ELT3,
  24       ELT0, ELT1, ELT2, ELT3, ELT0, ELT1, ELT2, ELT3};
  25
  26 int __attribute__ ((noipa))
  27 f(struct s *ptr, unsigned n) {
  28     int res = 0;
  29     for (int i = 0; i < n; ++i)
  30       res += ptr[i].b;
  31     return res;
  32 }
  33
  34 int main (void)
  35 {
  36   check_vect ();
  37
  38   if (f(&A[0], N) != RES)
  39     abort ();
  40
  41   return 0;
  42 }
  43
  44 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  45 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */