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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@84779 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3dd6fd3..0db81d0 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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.

diff --git a/gcc/combine.c b/gcc/combine.c
index 1bdceb5..0b4b4ca 100644 (file)
--- a/gcc/combine.c
+++ b/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);