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-rw-r--r--src/passes/MergeBlocks.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/passes/MergeBlocks.cpp b/src/passes/MergeBlocks.cpp
index 467ffb4ed..383837beb 100644
--- a/src/passes/MergeBlocks.cpp
+++ b/src/passes/MergeBlocks.cpp
@@ -190,7 +190,7 @@ static void optimizeBlock(Block* curr, Module* module) {
for (size_t j = i + 1; j < curr->list.size(); j++) {
merged.push_back(curr->list[j]);
}
- curr->list = merged;
+ curr->list.swap(merged);
more = true;
changed = true;
break;