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* read-rtl.c (struct macro_traverse_data): Add unknown_mode_attr field. (mode_attr_index): Remove check for defined attribute. Remove infile parameter. Change all callers. (apply_mode_maps): Add unknown parameter. Change caller. Always return after finding attribute. (apply_macro_to_rtx): Add unknown_mode_attr parameter. Change callers. (apply_macro_traverse): Set mtd->unknown_mode_attr. (read_rtx): Use mtd.unknown_mode_attr to check for an undefined attribute used for a mode. From-SVN: r99829
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