[clang][WebAssembly] Support reftypes & varargs in test_function_pointer_signature#150921

dschuff merged 6 commits intollvm:mainllvm/llvm-project:mainfrom

hoodmane:wasm-test-fp-sig-reference-typeshoodmane/llvm-project:wasm-test-fp-sig-reference-typesCopy head branch name to clipboard