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tree-cfg.c (group_case_labels): Look at the second to last case statement for combing with the default case.

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2004-10-19  Andrew Pinski  <pinskia@physics.uc.edu>

        * tree-cfg.c (group_case_labels): Look at the second to last
        case statement for combing with the default case.

From-SVN: r89288
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Andrew Pinski 2004-10-19 20:52:22 +00:00 committed by Andrew Pinski
parent 3af51af7a1
commit d717e50058
2 changed files with 10 additions and 4 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-10-19 Andrew Pinski <pinskia@physics.uc.edu>
* tree-cfg.c (group_case_labels): Look at the second to last
case statement for combing with the default case.
2004-10-19 Richard Hendeson <rth@redhat.com>
PR 17962

9
gcc/tree-cfg.c
View File

@ -948,7 +948,7 @@ group_case_labels (void)
Ignore the last element of the label vector because it
must be the default case. */
i = 0;
while (i < old_size - 2)
while (i < old_size - 1)
{
tree base_case, base_label, base_high, type;
base_case = TREE_VEC_ELT (labels, i);
@ -969,13 +969,13 @@ group_case_labels (void)
type = TREE_TYPE (CASE_LOW (base_case));
base_high = CASE_HIGH (base_case) ?
CASE_HIGH (base_case) : CASE_LOW (base_case);
i++;
/* Try to merge case labels. Break out when we reach the end
of the label vector or when we cannot merge the next case
label with the current one. */
while (i < old_size - 2)
while (i < old_size - 1)
{
tree merge_case = TREE_VEC_ELT (labels, ++i);
tree merge_case = TREE_VEC_ELT (labels, i);
tree merge_label = CASE_LABEL (merge_case);
tree t = int_const_binop (PLUS_EXPR, base_high,
integer_one_node, 1);
@ -990,6 +990,7 @@ group_case_labels (void)
CASE_HIGH (base_case) = base_high;
TREE_VEC_ELT (labels, i) = NULL_TREE;
new_size--;
i++;
}
else
break;