chore(vm): add llvm feature

Cargo.toml

@@ -16,7 +16,7 @@ readme = "./README.md"
 
 
 [target.'cfg(not(target_family="wasm"))'.dev-dependencies]
-wasmy-vm = "0.5.5"
+wasmy-vm = { version ="0.5.5", features = [] }
 structopt = { version = "0.3", features = ["color"] }
 tokio = { version = "1.17.0", features = ["macros", "rt", "rt-multi-thread"] }
 [[example]]

wasmy-vm/Cargo.toml

@@ -20,10 +20,13 @@ inventory = "0.2.2"
 wasmer = "2.0.0"
 wasmer-engine-universal = "2.0.0"
 wasmer-wasi = "2.0.0"
-wasmer-compiler-cranelift = { version = "2.0.0" }
+wasmer-compiler-cranelift = { version = "2.0.0", optional = true }
+wasmer-compiler-llvm = { version = "2.0.0", optional = true }
 serde = { version = "1.0", features = ["derive"] }
 anyhow = "1"
 protobuf = { version = "2", features = ["with-bytes"] }
 lazy_static = "1.4.0"
 
 [features]
+default = ["wasmer-compiler-cranelift"]
+llvm = ["wasmer-compiler-llvm"]

wasmy-vm/src/modules.rs

@@ -2,7 +2,6 @@ use std::{collections::HashMap, sync::RwLock};
 
 use lazy_static;
 use wasmer::{ImportObject, Store, Type};
-use wasmer_compiler_cranelift::Cranelift;
 use wasmer_engine_universal::Universal;
 use wasmer_wasi::{WasiState, WasiStateBuilder};
 use wasmy_abi::{CodeMsg, Result, CODE_EXPORTS};
@@ -42,7 +41,20 @@ where
 
     #[cfg(debug_assertions)]
     println!("compiling module, wasm_uri={}...", wasm_uri);
-    let store: Store = Store::new(&Universal::new(Cranelift::default()).engine());
+
+    let compiler_config;
+
+    #[cfg(not(feature = "llvm"))]
+    {
+        compiler_config = wasmer_compiler_cranelift::Cranelift::default();
+    }
+
+    #[cfg(feature = "llvm")]
+    {
+        compiler_config = wasmer_compiler_llvm::LLVM::default();
+    }
+
+    let store: Store = Store::new(&Universal::new(compiler_config).engine());
     let mut module = wasmer::Module::new(&store, bytes)?;
     module.set_name(wasm_uri.as_str());
     if let Some(cf) = check_module {