[Bug rtl-optimization/63191] [4.8/4.9/5 Regression] 32-bit gcc uses excessive memory during dead store elimination with -fPIC

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63191

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
With

int a, b, c, d;
struct X { int a; int b; void *p; } z[4];
void foo (void)
{
  z[0].a = 1;
  z[0].b = 2;
  z[0].p = &a;
  z[1].a = 1;
  z[1].b = 2;
  z[1].p = &b;
  z[2].a = 1;
  z[2].b = 2;
  z[2].p = &c;
  z[3].a = 1;
  z[3].b = 2;
  z[3].p = &d;
}

CSEing of the GOT load of z works.