Merge pull request #122 from kateinoigakukun/yt/add-wasm-backend-validation

Add validation check for WebAssembly compiler backend

Author: kateinoigakukun

test-cross-compile/main.swift

@@ -0,0 +1 @@
+func foo() {}

test-cross-compile/test-compile-wasm.test

@@ -0,0 +1,6 @@
+RUN: rm -rf %t
+RUN: mkdir -p %t
+RUN: %{swiftc} -target wasm32-unknown-wasi -parse-stdlib -c %S/main.swift -o %t/main.o
+RUN: file %t/main.o | %{FileCheck} %s
+
+CHECK: WebAssembly (wasm) binary module version 0x1 (MVP)