[Bug c++/70549] insn does not satisfy its constraints aarch64 gcc-4.8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70549

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, 4.9 did not fix this, on the reduced:

struct A { float x; float y; };
A a, b, c;
int d, e;
A bar ();
void foo (A, A);
inline A operator/ (A, A p2) { if (p2.x) return a; }
struct B { A dval; };
int baz (A, B, A, int);

void
test ()
{
  B q;
  A f, g, h, k;
  h.x = 1.0;
  f = h;
  struct A i, j = f;
  do {
    i = bar ();
    g = i / j;
    foo (g, c);
    int l = baz (k, q, b, e);
    if (l)
      goto cleanup;
    j = i;
  } while (d);
cleanup:;
}

with -O2 -fPIC -fno-schedule-insns -mno-lra I can still reproduce it even with
r219720; GCC 5 is fine, because -mno-lra has been removed in r219734.
GCC 4.9 is not upstream supported either, this note is mainly for those still
maintaining 4.8 or 4.9 aarch64 branches.