gcc/testsuite/gcc.target/hppa/shadd-3.c

   1 /* { dg-do compile }  */
   2 /* { dg-options "-O2" }  */
   3 /* In this test we want to verify that combine canonicalizes the
   4    MULT into an ASHIFT which in turn allows postreload-gcse to
   5    find the common subexpression.
   6
   7    Neither pass dumps stuff in a format that is particularly good
   8    for parsing here, so we count the shadd insns.  More is not
   9    necessarily better in this test.  If this test is too fragile
  10    over time we'll have to revisit the combine and/or postreload
  11    dumps.  */
  12 /* { dg-final { scan-assembler-times "sh.add" 5 } }  */
  13
  14 extern void oof (void);
  15 typedef struct simple_bitmap_def *sbitmap;
  16 struct simple_bitmap_def
  17 {
  18   unsigned char *popcount;
  19   unsigned int n_bits;
  20   unsigned long elms[1];
  21 };
  22 __inline__ void
  23 SET_BIT (sbitmap map, unsigned int bitno)
  24 {
  25   if (map->popcount)
  26     {
  27       unsigned char oldbit;
  28       oldbit =
  29         ((map)->elms[bitno / 64]);
  30       if (!oldbit)
  31         oof ();
  32     }
  33   map->elms[bitno / 64] |= 1;
  34 }
  35
  36 void
  37 fix_bb_placements (int indx1, int indx2, sbitmap in_queue)
  38 {
  39   SET_BIT (in_queue, indx1);
  40   SET_BIT (in_queue, indx2);
  41 }