Subversion Repositories openrisc

// PR optimization/11083

// Origin: 

// Reduced testcase by Wolfgang Bangerth 

// The compiler used to keep unreachable basic blocks after dead edges

// had been purged, which fooled the LCM code of the GCSE pass.

// { dg-do compile }

// { dg-options "-O2 -fnon-call-exceptions" }

extern void *memmove (void *, const void *, unsigned int) throw ();

struct S {

    int *q;

    S(int *i) : q(i) {}

};

struct X {

    int *p;

    void foo(S first, S last) {

      try        { memmove(0, 0, last.q - first.q); }

      catch(...) { throw; }

    }

   void bar (const X& x);

};

void X::bar (const X& x)

{

  const unsigned int xlen = S(x.p).q - S(x.p).q;

  if (xlen > 0)

    foo(S(x.p), S(x.p));

}