gcc/testsuite/gcc.target/i386/pr68961.c

   1 /* { dg-do compile { target lp64 } } */
   2 /* { dg-options "-O3 -fno-vect-cost-model -fdump-tree-slp2-details" } */
   3
   4 struct x { double d[2]; };
   5
   6 struct x
   7 pack (double a, double aa)
   8 {
   9   struct x u;
  10   u.d[0] = a;
  11   u.d[1] = aa;
  12   return u;
  13 }
  14
  15 /* The function should be optimized to just return as arguments and
  16    result exactly overlap even when previously vectorized.  */
  17
  18 /* { dg-final { scan-tree-dump "basic block vectorized" "slp2" } } */
  19 /* { dg-final { scan-assembler-not "mov" } } */