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* tree-ssa-structalias.h (PTR_IS_REF_ALL): New macro. (struct alias_info): Add new field ref_all_symbol_mem_tag. * tree-ssa-alias.c (compute_may_aliases): If the program contains ref-all pointers, run a finalization pass for them. (compute_flow_insensitive_aliasing): Skip ref-all pointers. (finalize_ref_all_pointers): New function. (is_escape_site): Return ESCAPE_BAD_CAST for conversion from a regular pointer type to a ref-all pointer type. (get_tmt_for): Return the special memory tag for ref-all pointers. From-SVN: r114116
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