gcc/testsuite/gcc.target/aarch64/sve/clz_1_run.c

   1 /* { dg-do run { target aarch64_sve_hw } } */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3
   4 #include "clz_1.c"
   5
   6 extern void abort (void) __attribute__ ((noreturn));
   7
   8 unsigned int data[] = {
   9   0xffffff80, 0,
  10   0xffffffff, 0,
  11   0x00000000, 32,
  12   0x80000000, 0,
  13   0x7fffffff, 1,
  14   0x000003ff, 22,
  15   0x1fffffff, 3,
  16   0x0000ffff, 16,
  17   0xffff0000, 0
  18 };
  19
  20 int __attribute__ ((optimize (1)))
  21 main (void)
  22 {
  23   unsigned int count = sizeof (data) / sizeof (data[0]) / 2;
  24
  25   uint32_t in32[count];
  26   unsigned int out32[count];
  27   for (unsigned int i = 0; i < count; ++i)
  28     {
  29       in32[i] = data[i * 2];
  30       asm volatile ("" ::: "memory");
  31     }
  32   clz_32 (out32, in32, count);
  33   for (unsigned int i = 0; i < count; ++i)
  34     if (out32[i] != data[i * 2 + 1])
  35       abort ();
  36
  37   uint64_t in64[count];
  38   unsigned int out64[count];
  39   for (unsigned int i = 0; i < count; ++i)
  40     {
  41       in64[i] = (uint64_t) data[i * 2] << 10;
  42       asm volatile ("" ::: "memory");
  43     }
  44   clz_64 (out64, in64, count);
  45   for (unsigned int i = 0; i < count; ++i)
  46     if (out64[i] != (data[i * 2] ? data[i * 2 + 1] + 22 : 64))
  47       abort ();
  48
  49   return 0;
  50 }