gcc/testsuite/gcc.target/mips/octeon-bbit-3.c

   1 /* { dg-do compile } */
   2
   3 /* Force big-endian because for little-endian, combine generates this:
   4
   5  (if_then_else (ne (zero_extract:DI (subreg:DI (truncate:SI (reg:DI 196)) 0)
   6                  (const_int 1)
   7                  (const_int 0))
   8              (const_int 0))
   9          (label_ref 20)
  10          (pc)))
  11
  12   which does not get recognized as a valid bbit pattern.  The
  13   middle-end should be able to simplify this further.  */
  14 /* { dg-options "-O2 -march=octeon -meb" } */
  15
  16 /* { dg-final { scan-assembler-times "\tbbit\[01\]\t|\tbgez\t" 2 } } */
  17 /* { dg-final { scan-assembler-not "ext\t" } } */
  18
  19 void abort (void);
  20 void exit (int);
  21
  22 typedef unsigned long long ulong64;
  23
  24 typedef struct bitfield_s {
  25   ulong64 a:1;
  26   ulong64 b:29;
  27   ulong64 c:1;
  28   ulong64 d:15;
  29   ulong64 f:18;
  30 } bitfield_t;
  31
  32 bitfield_t bar;
  33
  34 NOMIPS16 void
  35 f ()
  36 {
  37   foo(&bar);
  38   if (bar.a != 0x1)
  39     abort ();
  40   else if (!bar.c)
  41     abort ();
  42   else
  43     exit (0);
  44 }