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* tree.h (contains_placeholder_p): Now returns bool. (CONTAINS_PLACEHOLDER_P): New macro. (type_contains_placeholder_p): New function. * tree.c (save_expr): Remove code avoiding folding COMPONENT_REF. (contains_placeholder_p): Now returns bool. Rework to use CONTAINS_PLACEHOLDER_P macro. (type_contains_placeholder_p): New function. * fold-const.c (fold, case COMPONENT_REF): Don't fold if type_contains_placeholder_p. (fold_range_test, fold_mathfn_compare, fold_inf_compare, fold): Use CONTAINS_PLACEHOLDER_P macro. * builtins.c (fold_builtin): Likewise. * calls.c (initialize_argument_information): Likewise. * emit-rtl.c (set_mem_attributes_minus_bitpos): Likewise. * explow.c (expr_size): Likewise. * expr.c (store_constructor, get_inner_reference): Likewise. * function.c (assign_parms): Likewise. * stor-layout.c (variable_size): Likewise. From-SVN: r68969
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