040000 tree aa42eb88ddb7c1f6b164405e5b4e6f193917d6e6	bridge
040000 tree 4399a7c9ba128d92a1caaebef0892462cd142e4d	simdref
040000 tree 8acbb776a426898661638d19b549d315fb373aed	spec
040000 tree 9df18b1aff5e48413a1c752bc57839cbe5157657	test_helpers