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-rw-r--r--gcc/tree-cfg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index bc71dd6..1207908 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -1421,7 +1421,7 @@ gimple_can_merge_blocks_p (basic_block a, basic_block b)
if (!single_succ_p (a))
return false;
- if (single_succ_edge (a)->flags & (EDGE_ABNORMAL | EDGE_EH))
+ if (single_succ_edge (a)->flags & (EDGE_ABNORMAL | EDGE_EH | EDGE_PRESERVE))
return false;
if (single_succ (a) != b)