calls.c (save_fixed_argument_area): If save_mode is BLKmode, always use…

calls.c (save_fixed_argument_area): If save_mode is BLKmode, always use move_by_pieces to avoid infinite recursion.

	* calls.c (save_fixed_argument_area): If save_mode is BLKmode,
	always use move_by_pieces to avoid infinite recursion.
	(restore_fixed_argument_area): Likewise.

From-SVN: r30805

gcc/ChangeLog

@@ -13,6 +13,10 @@
 	* config/sparc/sparc.c (input_operand): Allow HImode and QImode
 	valid sethi operations when TARGET_ARCH64.
 
+	* calls.c (save_fixed_argument_area): If save_mode is BLKmode,
+	always use move_by_pieces to avoid infinite recursion.
+	(restore_fixed_argument_area): Likewise.
+
 Mon Dec  6 12:24:52 1999  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* fold-const.c (optimize_bit_field_compare): Only use one mode

gcc/calls.c

@@ -743,8 +743,10 @@ save_fixed_argument_area (reg_parm_stack_space, argblock,
       if (save_mode == BLKmode)
 	{
 	  save_area = assign_stack_temp (BLKmode, num_to_save, 0);
-	  emit_block_move (validize_mem (save_area), stack_area,
-			   GEN_INT (num_to_save),
+	  /* Cannot use emit_block_move here because it can be done by a library
+	     call which in turn gets into this place again and deadly infinite
+	     recursion happens.  */
+	  move_by_pieces (validize_mem (save_area), stack_area, num_to_save,
 			  PARM_BOUNDARY / BITS_PER_UNIT);
 	}
       else
@@ -781,8 +783,11 @@ restore_fixed_argument_area (save_area, argblock, high_to_save, low_to_save)
   if (save_mode != BLKmode)
     emit_move_insn (stack_area, save_area);
   else
-    emit_block_move (stack_area, validize_mem (save_area),
-		     GEN_INT (high_to_save - low_to_save + 1),
+    /* Cannot use emit_block_move here because it can be done by a library
+       call which in turn gets into this place again and deadly infinite
+       recursion happens.  */
+    move_by_pieces (stack_area, validize_mem (save_area),
+		    high_to_save - low_to_save + 1,
 		    PARM_BOUNDARY / BITS_PER_UNIT);
 }
 #endif