[wasm-split] Add an --asyncify option (#4513)

Add an option for running the asyncify transformation on the primary module
emitted by wasm-split. The idea is that the placeholder functions should be able
to unwind the stack while the secondary module is asynchronously loaded, then
once the placeholder functions have been patched out by the secondary module the
stack should be rewound and end up in the correct secondary function.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/tools/wasm-split/split-options.h b/src/tools/wasm-split/split-options.h
index d52f215cd..16e7b75e6 100644
--- a/src/tools/wasm-split/split-options.h
+++ b/src/tools/wasm-split/split-options.h
@@ -43,6 +43,7 @@ struct WasmSplitOptions : ToolOptions {
   bool emitBinary = true;
   bool symbolMap = false;
   bool placeholderMap = false;
+  bool asyncify = false;
 
   // TODO: Remove this. See the comment in wasm-binary.h.
   bool emitModuleNames = false;