gcc-4_9/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 "-march=octeon -meb" } */
  15 /* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
  16
  17 /* { dg-final { scan-assembler-times "\tbbit\[01\]\t|\tbgez\t|\tbltz\t" 2 } } */
  18 /* { dg-final { scan-assembler-not "ext\t" } } */
  19
  20 void abort (void);
  21 void abort1 (void);
  22 void exit (int);
  23
  24 typedef unsigned long long ulong64;
  25
  26 typedef struct bitfield_s {
  27   ulong64 a:1;
  28   ulong64 b:29;
  29   ulong64 c:1;
  30   ulong64 d:15;
  31   ulong64 f:18;
  32 } bitfield_t;
  33
  34 void foo (bitfield_t*);
  35
  36 bitfield_t bar;
  37
  38 NOMIPS16 void
  39 f ()
  40 {
  41   foo(&bar);
  42   if (bar.a != 0x1)
  43     abort ();
  44   else if (!bar.c)
  45     abort1 ();
  46   else
  47     exit (0);
  48 }