gcc/testsuite/gcc.c-torture/compile/20031125-1.c

   1 short *_offsetTable;
   2 /* This tests to make sure PRE splits the entry block ->block 0 edge
   3    when there are multiple block 0 predecessors.
   4    This is done so that we don't end up with an insertion on the
   5    entry block -> block 0 edge which would require a split at insertion
   6    time.
   7    PR 13163.  */
   8 void proc4WithoutFDFE(char *dst, const char *src, int next_offs, int bw,
   9                 int bh, int pitch)
  10 {
  11         do {
  12                 int i = bw;
  13                 int code = *src++;
  14                 int x, l;
  15                 int length = *src++ + 1;
  16
  17                 for (l = 0; l < length; l++) {
  18                         int x;
  19
  20                         for (x = 0; x < 4; x++) ;
  21                         if (i == 0)
  22                                 dst += pitch * 3;
  23                 }
  24                 char *dst2 = dst + _offsetTable[code] + next_offs;
  25
  26                 for (x = 0; x < 4; x++) {
  27                         int j = 0;
  28                         (dst + pitch * x)[j] = (dst2 + pitch * x)[j];
  29                 }
  30                 dst += pitch * 3;
  31         } while (--bh);
  32 }
  33
  34