Subversion Repositories openrisc

// { dg-do run }

/* { dg-options "-O2" } */

// We used to get alias grouping wrong on this one, hoisting accesses

// to the vector's end out of the loop.

#include 

#include 

struct A

{

  double unused;      // If I remove it => it works.

  std::vector v;

  A() : v(1) {}

};

inline // If not inline => it works.

A g()

{

  A r;

  r.v.resize(2);

  r.v[0] = 1;

  while (!r.v.empty() && r.v.back() == 0)

    r.v.pop_back();

  return r;

}

A f(const A &a)

{

  if (a.v.empty())  return a;

  if (a.v.empty())  return a;

  // A z = g(); return z;  // If I return like this => it works.

  return g();

}

int main()

{

  A a;

  A b;

  A r = f(a);

  assert(r.v.size() != 0);

  return 0;

}