[Bug middle-end/60013] [4.9 Regression] Build of 176.gcc from CPU2000 loops in cc1 starting with r207231

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60013

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly more reduced testcase for -O2:
typedef long int jmp_buf[64];
extern int _setjmp (jmp_buf) __attribute__ ((__nothrow__));
struct S { int a, b, c; };
extern struct S *baz (struct S *);
static jmp_buf j;

static inline int
bar (int b, int d)
{
  return (b & d) < 0;
}

struct S *
foo (int a, struct S *b, struct S *c, struct S *d)
{
  if (b->a == 0)
    {
      switch (a)
    {
    case 8:
      return baz (b);
    case 7:
      bar (b->c, c->b);
      return 0;
    case 6:
    case 5:
    case 4:
      return baz (c);
    case 3:
    case 2:
      return baz (d);
    }
      return 0;
    }
  if (b->a == 1)
    {
      if (baz (c))
    return c;
      else if (_setjmp (j))
    baz (b);
    }
  return 0;
}