Patch submitted by H. J. Lu

  Gcc 3.4.2 fixed ia64 -mtune=merced regressions on Linux 2.6 kernel:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16278

  I have been using this patch for several months now.
Signed-off-by: Tony Luck <tony.luck@intel.com>