Add feature flags and validation to wasm-metadce (#2364)

Sometimes wasm-metadce is the last tool to run over a binary in
Emscripten, and in that case it needs to know what features are
enabled in order to emit a valid binary. For example it needs to know
whether to emit a data count section.

1 files changed, 1 insertions, 1 deletions

diff --git a/check.py b/check.py
index 18b336dfc..9da8ebe0d 100755
--- a/check.py
+++ b/check.py
@@ -264,7 +264,7 @@ def run_wasm_metadce_tests():
             print('..', t)
             t = os.path.join(test_dir, t)
             graph = t + '.graph.txt'
-            cmd = WASM_METADCE + [t, '--graph-file=' + graph, '-o', 'a.wast', '-S']
+            cmd = WASM_METADCE + [t, '--graph-file=' + graph, '-o', 'a.wast', '-S', '-all']
             stdout = run_command(cmd)
             expected = t + '.dced'
             with open('a.wast') as seen: