1  /* { dg-do compile } */
       2  /* { dg-require-effective-target double64 } */
       3  /* { dg-options "-O -fdump-tree-forwprop1" }  */
       4  
       5  #include <stdint.h>
       6  
       7  /* All of these optimizations happen for unsupported vector modes as a
       8     consequence of the lowering pass. We need to test with a vector mode
       9     that is supported by default on at least some architectures, or make
      10     the test target specific so we can pass a flag like -mavx.  */
      11  
      12  typedef double vecf __attribute__ ((vector_size (2 * sizeof (double))));
      13  typedef int64_t veci __attribute__ ((vector_size (2 * sizeof (int64_t))));
      14  
      15  void f (double d, vecf* r)
      16  {
      17    vecf x = { -d, 5 };
      18    vecf y = {  1, 4 };
      19    veci m = {  2, 0 };
      20    *r = __builtin_shuffle (x, y, m); // { 1, -d }
      21  }
      22  
      23  void g (float d, vecf* r)
      24  {
      25    vecf x = { d, 5 };
      26    vecf y = { 1, 4 };
      27    veci m = { 2, 1 };
      28    *r = __builtin_shuffle (x, y, m); // { 1, 5 }
      29  }
      30  
      31  void h (double d, vecf* r)
      32  {
      33    vecf x = { d + 1, 5 };
      34    vecf y = {   1  , 4 };
      35    veci m = {   2  , 0 };
      36    *r = __builtin_shuffle (y, x, m); // { d + 1, 1 }
      37  }
      38  
      39  void i (float d, vecf* r)
      40  {
      41    vecf x = { d, 5 };
      42    veci m = { 1, 0 };
      43    *r = __builtin_shuffle (x, m); // { 5, d }
      44  }
      45  
      46  void j (vecf* r)
      47  {
      48    vecf y = {  1, 2 };
      49    veci m = {  0, 0 };
      50    *r = __builtin_shuffle (y, m); // { 1, 1 }
      51  }
      52  
      53  void k (vecf* r)
      54  {
      55    vecf x = {  3, 4 };
      56    vecf y = {  1, 2 };
      57    veci m = {  3, 0 };
      58    *r = __builtin_shuffle (x, y, m); // { 2, 3 }
      59  }
      60  
      61  void l (double d, vecf* r)
      62  {
      63    vecf x = { -d, 5 };
      64    vecf y = {  d, 4 };
      65    veci m = {  2, 0 };
      66    *r = __builtin_shuffle (x, y, m); // { d, -d }
      67  }
      68  
      69  /* { dg-final { scan-tree-dump-not "VEC_PERM_EXPR" "forwprop1" } } */