The following patch fixes

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55829

The patch was successfully bootstrapped on x86-64.

Committed as rev. 195057.

2013-01-09  Vladimir Makarov  <vmakarov@redhat.com>

         PR rtl-optimization/pr55829
         * lra-constraints.c (match_reload): Add code for absent output.
         (curr_insn_transform): Add code for reloads of matched inputs
         without output.

2013-01-09  Vladimir Makarov  <vmakarov@redhat.com>

         PR rtl-optimization/pr55829
         * gcc.target/i386/pr55829.c: New.