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-rw-r--r--src/asm2wasm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/asm2wasm.h b/src/asm2wasm.h
index 321d5275e..abe6e2f25 100644
--- a/src/asm2wasm.h
+++ b/src/asm2wasm.h
@@ -787,6 +787,7 @@ void Asm2WasmBuilder::processAsm(Ref ast) {
PassRunner passRunner(&wasm);
passRunner.add<FinalizeCalls>(this);
passRunner.add<AutoDrop>();
+ if (optimize) passRunner.add("vacuum"); // autodrop can add some garbage
passRunner.run();
// apply memory growth, if relevant