[Bug tree-optimization/128013] [17 Regression] ICE at expand internal compiler error: SSA corruption with vectors

[ktkachov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128013

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Another testcase:

typedef int v4si __attribute__ ((vector_size (16)));
extern int rt (void) __attribute__ ((returns_twice));
extern void bar (void);
extern void use (v4si);

/* v occurs in abnormal PHIs.  The CONSTRUCTOR must not become a use of v
   after its redefinition.  */

void
f (v4si *out, v4si v)
{
  int a0 = v[0], a1 = v[1], a2 = v[2], a3 = v[3];
  bar ();
  v = v * 3;
  *out = (v4si) { a0, a1, a2, a3 };
  bar ();
  rt ();
  use (v);