gcc/testsuite/gcc.dg/vect/vect-bitfield-read-2-not.c

   1 /* { dg-require-effective-target vect_shift } */
   2 /* { dg-require-effective-target vect_long_long } */
   3 /* { dg-additional-options { "-fdump-tree-ifcvt-all" } } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 extern void abort(void);
   9
  10 struct s {
  11     char a : 4;
  12 };
  13
  14 #define N 32
  15 #define ELT0 {0}
  16 #define ELT1 {1}
  17 #define ELT2 {2}
  18 #define ELT3 {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       {
  31         asm volatile ("" ::: "memory");
  32         res += ptr[i].a;
  33       }
  34     return res;
  35 }
  36
  37 int main (void)
  38 {
  39   check_vect ();
  40
  41   if (f(&A[0], N) != RES)
  42     abort ();
  43
  44   return 0;
  45 }
  46
  47 /* { dg-final { scan-tree-dump-not "Bitfield OK to lower." "ifcvt" } } */
  48
  49