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* rtlanal.c (struct subreg_info, subreg_get_info, subreg_nregs): New. (subreg_regno_offset, subreg_offset_representable_p): Change to wrappers about subreg_get_info. (refers_to_regno_p, reg_overlap_mentioned_p): Use subreg_nregs. * rtl.h (subreg_nregs): Declare. * doc/tm.texi (HARD_REGNO_NREGS_HAS_PADDING): Update to refer to subreg_get_info. * caller-save.c (mark_set_regs, add_stored_regs): Use subreg_nregs. * df-scan.c (df_ref_record): Use subreg_nregs. * flow.c (mark_set_1): Use subreg_nregs. * postreload.c (move2add_note_store): Use subreg_nregs. * reload.c (decompose, refers_to_regno_for_reload_p, reg_overlap_mentioned_for_reload_p): Use subreg_nregs. * resource.c (update_live_status, mark_referenced_resources, mark_set_resources): Use subreg_nregs. From-SVN: r120076
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