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