1  /* PR target/64821 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-optimized" } */
       4  /* Check that we constant fold sqrt(4.0) into 2.0. */
       5  /* { dg-final { scan-tree-dump-not " \\\.SQRT" "optimized" } } */
       6  /* { dg-final { scan-tree-dump " 2\\\.0e\\\+0" "optimized" } } */
       7  /* { dg-final { scan-assembler-not "fsqrt" } } */
       8  /* We should produce a fmov to d0 with 2.0 but currently don't, see PR 103959. */
       9  /* { dg-final { scan-assembler-times "\n\tfmov\td0, 2.0e.0" 1 { xfail *-*-* } } } */
      10  
      11  #include <arm_neon.h>
      12  
      13  float64x1_t f64(void)
      14  {
      15     float64x1_t a = (float64x1_t){4.0};
      16     return vsqrt_f64 (a);
      17  }