gcc/testsuite/gcc.dg/vect/vect-early-break_110-pr113467.c

   1 /* { dg-add-options vect_early_break } */
   2 /* { dg-require-effective-target vect_early_break } */
   3 /* { dg-require-effective-target vect_long_long } */
   4
   5 /* { dg-final { scan-tree-dump-not "LOOP VECTORIZED" "vect" } } */
   6
   7 #include "tree-vect.h"
   8 #include <stdint.h>
   9
  10 typedef struct gcry_mpi *gcry_mpi_t;
  11 struct gcry_mpi {
  12   int nlimbs;
  13   uint64_t *d;
  14 };
  15
  16 long gcry_mpi_add_ui_up;
  17 void gcry_mpi_add_ui(gcry_mpi_t w, gcry_mpi_t u, unsigned v) {
  18   gcry_mpi_add_ui_up = *w->d;
  19   if (u) {
  20     uint64_t *res_ptr = w->d, *s1_ptr = w->d;
  21     int s1_size = u->nlimbs;
  22     unsigned s2_limb = v, x = *s1_ptr++;
  23     s2_limb += x;
  24     *res_ptr++ = s2_limb;
  25     if (x)
  26       while (--s1_size) {
  27         x = *s1_ptr++ + 1;
  28         *res_ptr++ = x;
  29         if (x) {
  30           break;
  31         }
  32       }
  33   }
  34 }
  35
  36 int main()
  37 {
  38   check_vect ();
  39
  40   static struct gcry_mpi sv;
  41   static uint64_t vals[] = {4294967288ULL, 191ULL,        4160749568ULL, 4294963263ULL,
  42                             127ULL,        4294950912ULL, 255ULL,        4294901760ULL,
  43                             534781951ULL,  33546240ULL,   4294967292ULL, 4294960127ULL,
  44                             4292872191ULL, 4294967295ULL, 4294443007ULL, 3ULL};
  45   gcry_mpi_t v = &sv;
  46   v->nlimbs = 16;
  47   v->d = vals;
  48
  49   gcry_mpi_add_ui(v, v, 8);
  50   if (v->d[1] != 192)
  51     __builtin_abort();
  52 }