WIP: Add jit_compile/1, very basic JIT2

.github/workflows/jit.yml

@@ -0,0 +1,18 @@
+name: Test JIT
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test-jit:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Rust
+        uses: ./.github/actions/setup-rust
+        with:
+          rust-version: nightly
+          targets: x86_64-unknown-linux-gnu      
+      - name: Test with JIT
+        run: cargo +nightly test --features jit

Cargo.toml

@@ -13,7 +13,7 @@ build = "build/main.rs"
 rust-version = "1.77"
 
 [lib]
-crate-type = ["cdylib", "rlib"]
+crate-type = ["cdylib", "rlib", "staticlib"]
 
 [features]
 default = ["ffi", "repl", "hostname", "tls", "http", "crypto-full"]
@@ -24,6 +24,7 @@ tls = ["dep:native-tls"]
 http = ["dep:warp", "dep:reqwest"]
 rust_beta_channel = []
 crypto-full = []
+jit = ["dep:cranelift", "dep:cranelift-jit", "dep:cranelift-module", "dep:cranelift-codegen"]
 
 [build-dependencies]
 indexmap = "1.0.2"
@@ -85,6 +86,10 @@ native-tls = { version = "0.2.4", optional = true }
 reqwest = { version = "0.11.18", optional = true }
 rustyline = { version = "12.0.0", optional = true }
 tokio = { version = "1.28.2", features = ["full"] }
+cranelift = { version = "0.108.1", optional = true }
+cranelift-jit = { version = "0.108.1", optional = true }
+cranelift-module = { version = "0.108.1", optional = true }
+cranelift-codegen = { version = "0.108.1", optional = true }
 warp = { version = "=0.3.5", features = ["tls"], optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]