gcc/testsuite/gcc.target/i386/pr88828-5b.c

/* { dg-do compile } */
/* { dg-options "-O2 -mavx" } */
/* { dg-final { scan-assembler-times "vpermilps" 1 } } */
/* { dg-final { scan-assembler-times "vinsertps" 1 } } */
/* { dg-final { scan-assembler-not "vshufps" } } */
/* { dg-final { scan-assembler-not "vmovss" } } */
/* { dg-final { scan-assembler-not "vmovaps" } } */
/* { dg-final { scan-assembler-not "vmovlhps" } } */
/* { dg-final { scan-assembler-not "vunpcklps" } } */

typedef float __v4sf __attribute__ ((__vector_size__ (16)));

__attribute__((noinline, noclone))
__v4sf
foo (__v4sf x, float f)
{
  __v4sf y = { x[0], x[2], x[3], x[0] };
  y[3] = f;
  return y;
}