combine.c (simplify_set): match the mode of the constant 0 with the tested…

combine.c (simplify_set): match the mode of the constant 0 with the tested operand to match the compare...

2004-07-15  Roman Zippel  <zippel@linux-m68k.org>

        * combine.c (simplify_set): match the mode of the constant 0 with
        the tested operand to match the compare behaviour and the
        simplify_relational_operation() expectation.

From-SVN: r84779

gcc/ChangeLog

+2004-07-15  Roman Zippel  <zippel@linux-m68k.org>
+
+	* combine.c (simplify_set): match the mode of the constant 0 with 
+	the tested operand to match the compare behaviour and the 
+	simplify_relational_operation() expectation.
+
 2004-07-15  Aldy Hernandez  <aldyh@redhat.com>
 
         * config/rs6000/rs6000.md ("bunordered"): Disable for e500.

gcc/combine.c

@@ -5107,7 +5107,7 @@ simplify_set (rtx x)
       if (GET_CODE (src) == COMPARE)
 	op0 = XEXP (src, 0), op1 = XEXP (src, 1);
       else
-	op0 = src, op1 = const0_rtx;
+	op0 = src, op1 = CONST0_RTX (GET_MODE (src));
 
       tmp = simplify_relational_operation (old_code, compare_mode, VOIDmode,
 					   op0, op1);