[lra] patch to fix ia64 bootstrap

[Vladimir Makarov]

The following patch fixes IA64 bootstrap after the last merge.

The patch was sucessfully bootstrapped on ia64 and x86/x86-64.

Committed as rev. 189079.

2012-06-29  Vladimir Makarov <vmakarov@redhat.com>

         * lra-constraints.c (get_op_class): Don't process SUBREG.
         (check_and_process_move): Simplify the code.


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