*** empty log message ***

From-SVN: r1279

diff --git a/gcc/expr.c b/gcc/expr.c
index fef186e8916e4f3442bcb8f4e9d93ece8942cbb0..f869b58c9de255e243bffc72c5202db3392c170b 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5927,11 +5927,14 @@ do_jump (exp, if_false_label, if_true_label)
         combine can't do this for us because it can't know whether a
         ZERO_EXTRACT or a compare in a smaller mode exists, but we do.  */
 
-      if (TREE_CODE (TREE_OPERAND (exp, 1)) == INTEGER_CST
+      if (! SLOW_BYTE_ACCESS
+         && TREE_CODE (TREE_OPERAND (exp, 1)) == INTEGER_CST
          && TYPE_PRECISION (TREE_TYPE (exp)) <= HOST_BITS_PER_INT
          && (i = floor_log2 (TREE_INT_CST_LOW (TREE_OPERAND (exp, 1)))) >= 0
          && (type = type_for_size (i + 1, 1)) != 0
-         && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp)))
+         && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp))
+         && (cmp_optab->handlers[(int) TYPE_MODE (type)].insn_code
+             != CODE_FOR_nothing))
        {
          do_jump (convert (type, exp), if_false_label, if_true_label);
          break;
@@ -5980,8 +5983,11 @@ do_jump (exp, if_false_label, if_true_label)
                             &mode, &unsignedp, &volatilep);
 
        type = type_for_size (bitsize, unsignedp);
-       if (type != 0 && bitsize >= 0
-           && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp)))
+       if (! SLOW_BYTE_ACCESS
+           && type != 0 && bitsize >= 0
+           && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp))
+           && (cmp_optab->handlers[(int) TYPE_MODE (type)].insn_code
+               != CODE_FOR_nothing))
          {
            do_jump (convert (type, exp), if_false_label, if_true_label);
            break;