gcc/testsuite/gcc.target/arm/asm-flag-6.c

   1 /* Executable testcase for 'output flags.'  */
   2 /* { dg-do run } */
   3 /* { dg-skip-if "" { arm_thumb1 } } */
   4
   5 int test_bits (long nzcv)
   6 {
   7   long n, z, c, v;
   8
   9   __asm__ ("msr APSR_nzcvq, %[in]"
  10            : "=@ccmi"(n), "=@cceq"(z), "=@cccs"(c), "=@ccvs"(v)
  11            : [in] "r"(nzcv << 28));
  12
  13   return n * 8 + z * 4 + c * 2 + v == nzcv;
  14 }
  15
  16 int test_cmps (long x, long y)
  17 {
  18   long gt, lt, ge, le;
  19
  20   __asm__ ("cmp %[x], %[y]"
  21            : "=@ccgt"(gt), "=@cclt"(lt), "=@ccge"(ge), "=@ccle"(le)
  22            : [x] "r"(x), [y] "r"(y));
  23
  24   return (gt == (x > y)
  25           && lt == (x < y)
  26           && ge == (x >= y)
  27           && le == (x <= y));
  28 }
  29
  30 int test_cmpu (unsigned long x, unsigned long y)
  31 {
  32   long gt, lt, ge, le;
  33
  34   __asm__ ("cmp %[x], %[y]"
  35            : "=@cchi"(gt), "=@cclo"(lt), "=@cchs"(ge), "=@ccls"(le)
  36            : [x] "r"(x), [y] "r"(y));
  37
  38   return (gt == (x > y)
  39           && lt == (x < y)
  40           && ge == (x >= y)
  41           && le == (x <= y));
  42 }
  43
  44 int main ()
  45 {
  46   long i, j;
  47
  48   for (i = 0; i < 16; ++i)
  49     if (!test_bits (i))
  50       __builtin_abort ();
  51
  52   for (i = -1; i <= 1; ++i)
  53     for (j = -1; j <= 1; ++j)
  54       if (!test_cmps (i, j))
  55         __builtin_abort ();
  56
  57   for (i = 0; i <= 2; ++i)
  58     for (j = 0; j <= 2; ++j)
  59       if (!test_cmpu (i, j))
  60         __builtin_abort ();
  61
  62   return 0;
  63 }