Merge cranelift/wasmtime fuzzing

fuzz/fuzz_targets/translate_module.rs

@@ -0,0 +1,17 @@
+#![no_main]
+
+use cranelift_codegen::{isa, settings};
+use cranelift_wasm::{translate_module, DummyEnvironment, ReturnMode};
+use libfuzzer_sys::fuzz_target;
+use std::str::FromStr;
+use target_lexicon::triple;
+use wasmtime_fuzzing::generators;
+
+fuzz_target!(|data: generators::WasmOptTtf| {
+    let flags = settings::Flags::new(settings::builder());
+    let triple = triple!("x86_64");
+    let isa = isa::lookup(triple).unwrap().finish(flags);
+    let mut dummy_environ =
+        DummyEnvironment::new(isa.frontend_config(), ReturnMode::NormalReturns, false);
+    translate_module(&data.wasm, &mut dummy_environ).unwrap();
+});