gcc/testsuite/gcc.target/arm/neon-cond-1.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target arm_neon_hw } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-add-options arm_neon } */
   5 /* Check that the arm_final_prescan_insn ccfsm code does not try to
   6  * conditionally execute NEON instructions.  */
   7 #include <arm_neon.h>
   8 #include <stdlib.h>
   9
  10 int __attribute__((noinline))
  11 foo(uint32x2_t a, uint32_t *p, uint32_t *q)
  12 {
  13   if (p != q)
  14     /* This vst1 instruction could be conditional, except that NEON
  15        instructions are never conditional in ARM mode.  */
  16     vst1_u32(p, a);
  17   return 0;
  18 }
  19
  20 int
  21 main()
  22 {
  23     uint32x2_t v;
  24     uint32_t a[2] = {1, 42};
  25     v = vld1_u32(a);
  26     v = vadd_u32(v, v);
  27     foo(v, a, a);
  28     if (a[0] != 1 || a[1] != 42)
  29       abort();
  30     exit(0);
  31 }