* stor-layout.c (excess_unit_span): Only define if used.

From-SVN: r61707

gcc/ChangeLog

+2003-01-24  Andreas Schwab  <schwab@suse.de>
+
+	* stor-layout.c (excess_unit_span): Only define if used.
+
 2003-01-24  Jerry Quinn  <jlquinn@optonline.net>
 
 	* gcc/doc/invoke.texi (Optimization Options): List -O levels

gcc/stor-layout.c

 /* C-compiler utilities for types and variables storage layout
    Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1996, 1998,
-   1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -62,9 +62,11 @@ static int reference_types_internal = 0;
 static void finalize_record_size	PARAMS ((record_layout_info));
 static void finalize_type_size		PARAMS ((tree));
 static void place_union_field		PARAMS ((record_layout_info, tree));
+#if defined (PCC_BITFIELD_TYPE_MATTERS) || defined (BITFIELD_NBYTES_LIMITED)
 static int excess_unit_span		PARAMS ((HOST_WIDE_INT, HOST_WIDE_INT,
 						HOST_WIDE_INT, HOST_WIDE_INT,
 						tree));
+#endif
 static unsigned int update_alignment_for_field
                                         PARAMS ((record_layout_info, tree, 
 						 unsigned int));
@@ -791,6 +793,7 @@ place_union_field (rli, field)
 			       DECL_SIZE_UNIT (field), rli->offset));
 }
 
+#if defined (PCC_BITFIELD_TYPE_MATTERS) || defined (BITFIELD_NBYTES_LIMITED)
 /* A bitfield of SIZE with a required access alignment of ALIGN is allocated
    at BYTE_OFFSET / BIT_OFFSET.  Return nonzero if the field would span more
    units of alignment than the underlying TYPE.  */
@@ -808,6 +811,7 @@ excess_unit_span (byte_offset, bit_offset, size, align, type)
 	  > ((unsigned HOST_WIDE_INT) tree_low_cst (TYPE_SIZE (type), 1)
 	     / align));
 }
+#endif
 
 /* RLI contains information about the layout of a RECORD_TYPE.  FIELD
    is a FIELD_DECL to be added after those fields already present in