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	different from that returned by expand_expr.
	* expr.c (store_expr): Use the validity of a target MEM, rather
	than checking DECL_RTL (exp), to figure out if a copy is
	required.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@75273 138bc75d-0d04-0410-961f-82ee72b054a4