Move compilation into Module from Instance. (#822)

* Move compilation into Module from Instance.

* Fix fuzzing

* Use wasmtime::Module in fuzzing crates

Instead of wasmtime_jit.

* Compile eagerly.

* Review fixes.

* Always use the saved name.

* Preserve the former behavior for fuzzing oracle

fuzz/Cargo.toml

@@ -13,7 +13,6 @@ arbitrary = "0.2.0"
 env_logger = "0.7.1"
 log = "0.4.8"
 wasmtime-fuzzing = { path = "../crates/fuzzing", features = ["env_logger"] }
-wasmtime-jit = { path = "../crates/jit" }
 wasmtime = { path = "../crates/api" }
 libfuzzer-sys = "0.2.0"
 

fuzz/fuzz_targets/compile.rs

@@ -1,20 +1,14 @@
 #![no_main]
 
 use libfuzzer_sys::fuzz_target;
+use wasmtime::Strategy;
 use wasmtime_fuzzing::{oracles, with_log_wasm_test_case};
-use wasmtime_jit::CompilationStrategy;
 
 fuzz_target!(|data: &[u8]| {
-    with_log_wasm_test_case!(data, |data| oracles::compile(
-        data,
-        CompilationStrategy::Cranelift
-    ));
+    with_log_wasm_test_case!(data, |data| oracles::compile(data, Strategy::Cranelift));
 });
 
 #[cfg(feature = "lightbeam")]
 fuzz_target!(|data: &[u8]| {
-    with_log_wasm_test_case!(data, |data| oracles::compile(
-        data,
-        CompilationStrategy::Lightbeam
-    ));
+    with_log_wasm_test_case!(data, |data| oracles::compile(data, Strategy::Lightbeam));
 });