re PR tree-optimization/24793 (ICE: expected ssa_name, have var_decl in verify_ssa, at tree-ssa.c:746)

	PR tree-optimization/24793
	* tree-ssa-loop-ivopts.c (get_ref_tag): Remember the
	original reference if there are subvars.
	* tree-ssa-operands.c (get_tmr_operands): Handle subvars.

From-SVN: r108808