old-autovect-branch/gcc/testsuite/gcc.dg/pr23049.c

   1 /* This was an ICE in fold where we tried to fold something like,
   2
   3      a = 0 == 0 ? 0 : 3988292384
   4
   5    after doing if-conversion for the vectorizer.  Folding "0 == 0"
   6    should have been done before calling fold on the whole rhs of
   7    the above expression.  */
   8
   9 /* { dg-do compile } */
  10 /* { dg-options "-O3 -ftree-vectorize" } */
  11
  12 static unsigned short int crc_table[256];
  13 void AC3_encode_init(void)
  14 {
  15   unsigned int c, n, k;
  16   for(n=0;  n<256; n++)
  17   {
  18     c = n << 8;
  19     for (k = 0; k < 8; k++)
  20     {
  21       if (c & (1 << 15))
  22        c = ((c << 1) & 0xffff) ^ (((1 << 0) | (1 << 2) | (1 << 15) | (1 << 16)) & 0xffff);
  23     }
  24     crc_table[n] = c;
  25   }
  26 }