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-rw-r--r--gcc/tree-vrp.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index 4f1c328..949b73c 100644
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -7149,9 +7149,16 @@ execute_vrp (void)
{
size_t j;
size_t n = TREE_VEC_LENGTH (su->vec);
+ tree label;
gimple_switch_set_num_labels (su->stmt, n);
for (j = 0; j < n; j++)
gimple_switch_set_label (su->stmt, j, TREE_VEC_ELT (su->vec, j));
+ /* As we may have replaced the default label with a regular one
+ make sure to make it a real default label again. This ensures
+ optimal expansion. */
+ label = gimple_switch_default_label (su->stmt);
+ CASE_LOW (label) = NULL_TREE;
+ CASE_HIGH (label) = NULL_TREE;
}
if (VEC_length (edge, to_remove_edges) > 0)