expmed.c (const_mult_add_overflow_p): Remove.

	* expmed.c (const_mult_add_overflow_p): Remove.
	* expr.h: Remove the prototype for const_mult_add_overflow_p.

From-SVN: r110334

gcc/ChangeLog

+2006-01-28  Kazu Hirata  <kazu@codesourcery.com>
+
+	* expmed.c (const_mult_add_overflow_p): Remove.
+	* expr.h: Remove the prototype for const_mult_add_overflow_p.
+
 2006-01-28  David Edelsohn  <edelsohn@gnu.org>
 
 	* config/rs6000/aix43.h (SUBTARGET_OVERRIDE_OPTIONS): -msoft-float

gcc/expmed.c

@@ -5025,44 +5025,6 @@ make_tree (tree type, rtx x)
     }
 }
 
-/* Check whether the multiplication X * MULT + ADD overflows.
-   X, MULT and ADD must be CONST_*.
-   MODE is the machine mode for the computation.
-   X and MULT must have mode MODE.  ADD may have a different mode.
-   So can X (defaults to same as MODE).
-   UNSIGNEDP is nonzero to do unsigned multiplication.  */
-
-bool
-const_mult_add_overflow_p (rtx x, rtx mult, rtx add,
-			   enum machine_mode mode, int unsignedp)
-{
-  tree type, mult_type, add_type, result;
-
-  type = lang_hooks.types.type_for_mode (mode, unsignedp);
-
-  /* In order to get a proper overflow indication from an unsigned
-     type, we have to pretend that it's a sizetype.  */
-  mult_type = type;
-  if (unsignedp)
-    {
-      /* FIXME:It would be nice if we could step directly from this
-	 type to its sizetype equivalent.  */
-      mult_type = build_distinct_type_copy (type);
-      TYPE_IS_SIZETYPE (mult_type) = 1;
-    }
-
-  add_type = (GET_MODE (add) == VOIDmode ? mult_type
-	      : lang_hooks.types.type_for_mode (GET_MODE (add), unsignedp));
-
-  result = fold_build2 (PLUS_EXPR, mult_type,
-			fold_build2 (MULT_EXPR, mult_type,
-				     make_tree (mult_type, x),
-				     make_tree (mult_type, mult)),
-			make_tree (add_type, add));
-
-  return TREE_CONSTANT_OVERFLOW (result);
-}
-
 /* Return an rtx representing the value of X * MULT + ADD.
    TARGET is a suggestion for where to store the result (an rtx).
    MODE is the machine mode for the computation.

gcc/expr.h

@@ -722,7 +722,6 @@ extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT,
 			      unsigned HOST_WIDE_INT, int, rtx,
 			      enum machine_mode, enum machine_mode);
 extern rtx expand_mult (enum machine_mode, rtx, rtx, rtx, int);
-extern bool const_mult_add_overflow_p (rtx, rtx, rtx, enum machine_mode, int);
 extern rtx expand_mult_add (rtx, rtx, rtx, rtx,enum machine_mode, int);
 extern rtx expand_mult_highpart_adjust (enum machine_mode, rtx, rtx, rtx, rtx, int);