[PATCH] Fix PR27116, revert patch for PR23669

[Richard Guenther]

On Wed, 7 Jun 2006, Richard Guenther wrote:

> 
> Reverting the (wrong) patch for PR23669 fixes the miscompilation in
> PR27116.
> 
> Bootstrapped and tested (some time ago) on x86_64-unknown-linux-gnu.
> 
> Ok for mainline?

Kindly noted by pinski, here's a testcase for dg-torture:

/* { dg-do run } */

extern void abort(void);

int f(int a, int b)
{
  return (-1 - a) / (-b);
}

int main()
{
  if (f(__INT_MAX__, 2) != __INT_MAX__/2 + 1)
    abort ();
  return 0;
}

Richard.