expr.c (move_by_pieces): No longer static.

        * expr.c (move_by_pieces): No longer static.  Remove prototype.
        * rtl.h (move_by_pieces): Add extern prototype.
        * mips.c (expand_block_move): Handle aligned straight line copy by
        calling move_by_pieces.

From-SVN: r21794

gcc/ChangeLog

 Mon Aug 17 11:46:19 1998  Jeffrey A Law  (law@cygnus.com)
 
+	* expr.c (move_by_pieces): No longer static.  Remove prototype.
+	* rtl.h (move_by_pieces): Add extern prototype.
+	* mips.c (expand_block_move): Handle aligned straight line copy by
+	calling move_by_pieces.
+
 	* expr.c (expand_expr): Allow assignments from TImode PARM_DECLs
 	and VAR_DECLs.
 

gcc/config/mips/mips.c

@@ -3113,6 +3113,10 @@ expand_block_move (operands)
   if (TARGET_MEMCPY)
     block_move_call (dest_reg, src_reg, bytes_rtx);
 
+  else if (constp && bytes <= 2 * MAX_MOVE_BYTES
+	   && align == UNITS_PER_WORD)
+    move_by_pieces (orig_dest, orig_src, bytes, align);
+	
   else if (constp && bytes <= 2 * MAX_MOVE_BYTES)
     emit_insn (gen_movstrsi_internal (change_address (orig_dest, BLKmode,
 						      dest_reg),

gcc/expr.c

@@ -156,7 +156,6 @@ static rtx get_push_address	PROTO ((int));
 static rtx enqueue_insn		PROTO((rtx, rtx));
 static int queued_subexp_p	PROTO((rtx));
 static void init_queue		PROTO((void));
-static void move_by_pieces	PROTO((rtx, rtx, int, int));
 static int move_by_pieces_ninsns PROTO((unsigned int, int));
 static void move_by_pieces_1	PROTO((rtx (*) (rtx, ...), enum machine_mode,
 				       struct move_by_pieces *));
@@ -1394,7 +1393,7 @@ convert_modes (mode, oldmode, x, unsignedp)
     through protect_from_queue before calling.
    ALIGN (in bytes) is maximum alignment we can assume.  */
 
-static void
+void
 move_by_pieces (to, from, len, align)
      rtx to, from;
      int len, align;

gcc/rtl.h

@@ -1403,6 +1403,8 @@ extern int preserve_subexpressions_p	PROTO ((void));
 
 /* In expr.c */
 extern void init_expr_once		PROTO ((void));
+extern void move_by_pieces		PROTO ((rtx, rtx, int, int));
+
 
 /* In stupid.c */
 #ifdef BUFSIZ