diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a227266c..6f5c619b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
       matrix:
         script: ["test", "bench"]
         os: ["ubuntu-latest", "macos-latest"]
-        wasmer-feature: ["wasmer_sys", "wasmer_wamr"]
+        wasmer-feature: ["wasmer_sys_dev", "wasmer_sys_prod", "wasmer_wamr"]
         exclude:
           # TODO bench suite on macos-latest is killed by system due to running out of swap space
           # All benches run fine individually
@@ -33,9 +33,9 @@ jobs:
           size: 15G
       - uses: actions/checkout@v4
       - name: Install nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@v30
       - name: Setup cachix
-        uses: cachix/cachix-action@v14
+        uses: cachix/cachix-action@v15
         if: ${{ ! contains(matrix.platform.runs-on, 'self-hosted') }}
         with:
           name: holochain-ci
@@ -47,7 +47,8 @@ jobs:
       fail-fast: false
       matrix:
         wasmer-feature: 
-          - "wasmer_sys" 
+          - "wasmer_sys_dev"
+          - "wasmer_sys_prod"
           # TODO Building with wasmer_wamr feature flag on windows is not currently working.
           # See https://github.com/holochain/holochain-wasmer/issues/117
           # - "wasmer_wamr"
@@ -57,7 +58,21 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: wasm32-unknown-unknown
+      - name: Install LLVM
+        env:
+          LLVM_DIR: .llvm
+        shell: bash
+        run: |
+          LLVM_DIR=$(pwd)/${{ env.LLVM_DIR }}
+          mkdir -p ${LLVM_DIR}
+          curl --proto '=https' --tlsv1.2 -sSf "https://github.com/wasmerio/llvm-custom-builds/releases/download/15.x/llvm-windows-amd64.tar.xz" -L -o - | tar xJv -C ${LLVM_DIR}
       - name: test root
-        run: cargo test --release --no-default-features --features error_as_host,${{ matrix.wasmer-feature }} -- --nocapture
+        shell: pwsh
+        run: |
+          $env:LLVM_SYS_150_PREFIX="$(pwd)/.llvm"
+          cargo test --release --no-default-features --features error_as_host,${{ matrix.wasmer-feature }} -- --nocapture
       - name: test
-        run: cargo test --release --manifest-path test/Cargo.toml --no-default-features --features ${{ matrix.wasmer-feature }} -- --nocapture
+        shell: pwsh
+        run: |
+          $env:LLVM_SYS_150_PREFIX="$(pwd)/.llvm"
+          cargo test --release --manifest-path test/Cargo.toml --no-default-features --features ${{ matrix.wasmer-feature }} -- --nocapture
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc8dca17..eaf41d9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,15 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+### Changed
+- **BREAKING CHANGE** The `wasmer_sys` feature has been renamed to `wasmer_sys_dev`
+
+### Added
+- A new feature flag, `wasmer_sys_prod` which enables the Wasmer LLVM compiler. The default, with the `wasmer_sys_dev` feature
+  is the Cranelift compiler. The Cranelift compiler is fast, and recommended for development, but the LLVM compiler is supposed
+  to be faster and more optimized for production. In testing so far, the compile step is slower with LLVM but the runtime is
+  faster. More testing is needed yet to confirm the difference.
+
 ## [0.0.93] - 2024-04-24
 
 ### Changed
diff --git a/Cargo.lock b/Cargo.lock
index 8c31c5cd..d98c7e67 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,7 +81,7 @@ dependencies = [
  "cfg-if",
  "libc",
  "miniz_oxide 0.7.4",
- "object",
+ "object 0.36.3",
  "rustc-demangle",
 ]
 
@@ -108,9 +108,9 @@ dependencies = [
 
 [[package]]
 name = "bindgen"
-version = "0.69.4"
+version = "0.69.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a00dc851838a2120612785d195287475a3ac45514741da670b735818822129a0"
+checksum = "271383c67ccabffb7381723dea0672a673f292304fcb45c01cc648c7a8d58088"
 dependencies = [
  "bitflags 2.6.0",
  "cexpr",
@@ -1050,6 +1050,40 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "inkwell"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbac11e485159a525867fb7e6aa61981453e6a72f625fde6a4ab3047b0c6dec9"
+dependencies = [
+ "either",
+ "inkwell_internals",
+ "libc",
+ "llvm-sys",
+ "once_cell",
+ "parking_lot",
+]
+
+[[package]]
+name = "inkwell_internals"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87d00c17e264ce02be5bc23d7bff959188ec7137beddd06b8b6b05a7c680ea85"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itertools"
 version = "0.12.1"
@@ -1140,6 +1174,19 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4ce301924b7887e9d637144fdade93f9dfff9b60981d4ac161db09720d39aa5"
 
+[[package]]
+name = "llvm-sys"
+version = "150.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa55828745895d37233756307ded95a235b058aeb89cd12717ec7c3912089ee9"
+dependencies = [
+ "cc",
+ "lazy_static",
+ "libc",
+ "regex",
+ "semver",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -1253,6 +1300,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "object"
+version = "0.28.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e42c982f2d955fac81dd7e1d0e1426a7d702acd9c98d19ab01083a6a0328c424"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "object"
 version = "0.36.3"
@@ -1469,9 +1525,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.6"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4219d74c6b67a3654a9fbebc4b419e22126d13d2f3c4a07ee0cb61ff79a79619"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1481,9 +1537,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.7"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
+checksum = "368758f23274712b504848e9d5a6f010445cc8b87a7cdb4d7cbee666c1288da3"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1492,9 +1548,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.4"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
 [[package]]
 name = "region"
@@ -1596,6 +1652,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.34"
@@ -1611,9 +1676,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.12"
+version = "0.23.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c58f8c84392efc0a126acce10fa59ff7b3d2ac06ab451a33f2741989b806b044"
+checksum = "5fbb44d7acc4e873d613422379f69f237a1b141928c02f6bc6ccfddddc2d7993"
 dependencies = [
  "log",
  "once_cell",
@@ -1626,15 +1691,15 @@ dependencies = [
 
 [[package]]
 name = "rustls-pki-types"
-version = "1.8.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc0a2ce646f8655401bb81e7927b812614bd5d91dbc968696be50603510fcaf0"
+checksum = "16f1201b3c9a7ee8039bcadc17b7e605e2945b27eee7631788c1bd2b0643674b"
 
 [[package]]
 name = "rustls-webpki"
-version = "0.102.7"
+version = "0.102.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84678086bd54edf2b415183ed7a94d0efb049f1b646a33e22a36f3794be6ae56"
+checksum = "64ca1bc8749bd4cf37b5ce386cc146580777b4e8572c7b97baf22c83f444bee9"
 dependencies = [
  "ring",
  "rustls-pki-types",
@@ -2135,9 +2200,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-width"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0336d538f7abc86d282a4189614dfaa90810dfc2c6f6427eaf88e16311dd225d"
+checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
 
 [[package]]
 name = "unsafe-libyaml"
@@ -2283,6 +2348,7 @@ dependencies = [
  "wasm-bindgen",
  "wasmer-compiler",
  "wasmer-compiler-cranelift",
+ "wasmer-compiler-llvm",
  "wasmer-derive",
  "wasmer-types",
  "wasmer-vm",
@@ -2338,6 +2404,30 @@ dependencies = [
  "wasmer-types",
 ]
 
+[[package]]
+name = "wasmer-compiler-llvm"
+version = "4.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86da768569a3b509285e486a93a3058b4837668c9c7fb54d7d208469fb06f028"
+dependencies = [
+ "byteorder",
+ "cc",
+ "inkwell",
+ "itertools 0.10.5",
+ "lazy_static",
+ "libc",
+ "object 0.28.4",
+ "rayon",
+ "regex",
+ "rustc_version",
+ "semver",
+ "smallvec",
+ "target-lexicon",
+ "wasmer-compiler",
+ "wasmer-types",
+ "wasmer-vm",
+]
+
 [[package]]
 name = "wasmer-config"
 version = "0.4.0"
@@ -2495,9 +2585,9 @@ dependencies = [
 
 [[package]]
 name = "webpki-roots"
-version = "0.26.3"
+version = "0.26.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd7c23921eeb1713a4e851530e9b9756e4fb0e89978582942612524cf09f01cd"
+checksum = "841c67bff177718f1d4dfefde8d8f0e78f9b6589319ba88312f567fc5841a958"
 dependencies = [
  "rustls-pki-types",
 ]
diff --git a/crates/host/Cargo.toml b/crates/host/Cargo.toml
index dbd29d6a..994ac7d1 100644
--- a/crates/host/Cargo.toml
+++ b/crates/host/Cargo.toml
@@ -7,8 +7,8 @@ authors = ["thedavidmeister", "thedavidmeister@gmail.com"]
 edition = "2021"
 
 [dependencies]
-wasmer = { version = "=4.3.6", optional = true, default-feature = false }
-wasmer-middlewares = { version = "=4.3.6", optional = true, default-feature = false }
+wasmer = { version = "=4.3.6", optional = true, default-features = false }
+wasmer-middlewares = { version = "=4.3.6", optional = true, default-features = false }
 
 # Temporarily include a fork of wasmer from the git branch 'wamr', until it is officially released in wasmer v5
 hc-wasmer = { version="=4.3.6-hc.1", optional = true, default-features = false }
@@ -30,14 +30,22 @@ crate-type = ["cdylib", "rlib"]
 path = "src/lib.rs"
 
 [features]
-default = ["error_as_host", "wasmer_sys"]
+default = ["error_as_host", "wasmer_sys_dev"]
 debug_memory = []
 error_as_host = ["holochain_wasmer_common/error_as_host"]
 wasmer_sys = [
   "dep:wasmer",
   "dep:wasmer-middlewares",
+  "wasmer/sys",
+]
+wasmer_sys_dev = [
+  "wasmer_sys",
   "wasmer/default",
 ]
+wasmer_sys_prod = [
+  "wasmer_sys",
+  "wasmer/llvm",
+]
 wasmer_wamr = [
   "dep:hc-wasmer",
   "hc-wasmer/wamr"
diff --git a/crates/host/src/module/wasmer_sys.rs b/crates/host/src/module/wasmer_sys.rs
index 2778e918..2eadd709 100644
--- a/crates/host/src/module/wasmer_sys.rs
+++ b/crates/host/src/module/wasmer_sys.rs
@@ -5,7 +5,6 @@ use wasmer::sys::BaseTunables;
 use wasmer::sys::CompilerConfig;
 use wasmer::wasmparser;
 use wasmer::CompileError;
-use wasmer::Cranelift;
 use wasmer::DeserializeError;
 use wasmer::Engine;
 use wasmer::Module;
@@ -29,9 +28,15 @@ pub fn make_engine() -> Engine {
     // @todo 100 giga-ops is totally arbitrary cutoff so we probably
     // want to make the limit configurable somehow.
     let metering = Arc::new(Metering::new(WASM_METERING_LIMIT, cost_function));
+
     // the only place where the wasm compiler engine is set
-    let mut compiler = Cranelift::default();
-    compiler.canonicalize_nans(true).push_middleware(metering);
+    #[cfg(feature = "wasmer_sys_dev")]
+    let mut compiler = wasmer::Cranelift::default();
+    #[cfg(feature = "wasmer_sys_prod")]
+    let mut compiler = wasmer::LLVM::default();
+
+    compiler.canonicalize_nans(true);
+    compiler.push_middleware(metering);
 
     // Workaround for invalid memory access on iOS.
     // https://github.com/holochain/holochain/issues/3096
diff --git a/crates/host/src/plru.rs b/crates/host/src/plru.rs
index 3742b033..19c588c4 100644
--- a/crates/host/src/plru.rs
+++ b/crates/host/src/plru.rs
@@ -77,8 +77,6 @@
 //! ✔ Idiomatic Rust
 //!
 //! ✔ Production-quality
-
-#![cfg_attr(feature = "no_std", no_std)]
 #![warn(missing_docs)]
 
 extern crate core;
@@ -105,7 +103,6 @@ pub type DynamicCache = Cache<Box<[AtomicU64]>>;
 /// Create a heap allocated cache of a fixed (but dynamic) number of cache lines.
 ///
 /// Ideally, 64 should divide `len` to optimize space efficiency.
-#[cfg(not(feature = "no_std"))]
 pub fn create(lines: usize) -> DynamicCache {
     // Unfortunately, `AtomicU64` doesn't implement `Clone`, so we cannot use the `vec![]` macro.
     // We need to manually construct our vector.
@@ -312,7 +309,6 @@ impl<B: AsRef<[AtomicU64]>> fmt::Debug for Cache<B> {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(not(feature = "no_std"))]
     fn create() {
         assert_eq!(super::create(10).len(), 64);
         assert_eq!(super::create(64).len(), 64);
diff --git a/flake.nix b/flake.nix
index efd75ec6..98974d5c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,13 +21,26 @@
                     inputs.holochain-flake.devShells.${system}.rustDev
                 ];
 
-                # These packages and env vars are required to build wasmer on the 'wamr' branch (i.e. the hc-wasmer dependency)
-                packages = [
-                  pkgs.cmake
-                  pkgs.clang
-                  pkgs.llvmPackages.libclang.lib
+                packages = with pkgs; [
+                  # These packages and env vars are required to build Wasmer with the 'wamr' feature (i.e. the hc-wasmer dependency)
+                  cmake
+                  clang
+                  llvmPackages.libclang.lib
+                  # These packages are required to build Wasmer with the production config
+                  llvm_15
+                  libffi
+                  libxml2
+                  zlib
+                  ncurses
                 ];
+                # Used by `wamr`
                 LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
+                # Used by wasmer production config
+                shellHook = ''
+                    # This binary lives in a different derivation to `llvm_15` and isn't re-exported through that derivation
+                    export LLVM_SYS_150_PREFIX=$(which llvm-config | xargs dirname | xargs dirname)
+                    export LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib:${pkgs.libffi}/lib:${pkgs.zlib}/lib:${pkgs.ncurses}/lib"
+                '';
             };
         };
     };
diff --git a/scripts/bench-wasmer_sys.sh b/scripts/bench-wasmer_sys_dev.sh
similarity index 73%
rename from scripts/bench-wasmer_sys.sh
rename to scripts/bench-wasmer_sys_dev.sh
index 63909ae5..ab6ded2c 100755
--- a/scripts/bench-wasmer_sys.sh
+++ b/scripts/bench-wasmer_sys_dev.sh
@@ -1,7 +1,7 @@
 #! /usr/bin/env bash
 (
  cd test && \
- cargo bench --no-default-features --features wasmer_sys
+ cargo bench --no-default-features --features wasmer_sys_dev
 )
 
 # it's possible to flamegraph the benchmarks like this:
diff --git a/scripts/bench-wasmer_sys_prod.sh b/scripts/bench-wasmer_sys_prod.sh
new file mode 100755
index 00000000..fd73eced
--- /dev/null
+++ b/scripts/bench-wasmer_sys_prod.sh
@@ -0,0 +1,5 @@
+#! /usr/bin/env bash
+(
+ cd test && \
+ cargo bench --no-default-features --features wasmer_sys_prod
+)
diff --git a/scripts/bench.sh b/scripts/bench.sh
index ec8a8bb4..3dad9a66 100644
--- a/scripts/bench.sh
+++ b/scripts/bench.sh
@@ -1,4 +1,5 @@
 #! /usr/bin/env bash
 
-./bench-wasmer_sys.sh && \
+./bench-wasmer_sys_dev.sh
+./bench-wasmer_sys_prod.sh
 ./bench-wasmer_wamr.sh
\ No newline at end of file
diff --git a/scripts/fuzz-wasmer_sys.sh b/scripts/fuzz-wasmer_sys_dev.sh
similarity index 90%
rename from scripts/fuzz-wasmer_sys.sh
rename to scripts/fuzz-wasmer_sys_dev.sh
index 80472e81..f6832e9f 100755
--- a/scripts/fuzz-wasmer_sys.sh
+++ b/scripts/fuzz-wasmer_sys_dev.sh
@@ -2,4 +2,4 @@
 cargo test
 cargo test --manifest-path test/Cargo.toml
 
-cargo test-fuzz "$FUZZ_TARGET" --no-default-features --features wasmer_sys
\ No newline at end of file
+cargo test-fuzz "$FUZZ_TARGET" --no-default-features --features wasmer_sys_dev
diff --git a/scripts/fuzz-wasmer_sys_prod.sh b/scripts/fuzz-wasmer_sys_prod.sh
new file mode 100755
index 00000000..5a9d3a4b
--- /dev/null
+++ b/scripts/fuzz-wasmer_sys_prod.sh
@@ -0,0 +1,5 @@
+#! /usr/bin/env bash
+cargo test
+cargo test --manifest-path test/Cargo.toml
+
+cargo test-fuzz "$FUZZ_TARGET" --no-default-features --features wasmer_sys_prod
diff --git a/scripts/fuzz.sh b/scripts/fuzz.sh
old mode 100644
new mode 100755
index c2b47543..5b37c563
--- a/scripts/fuzz.sh
+++ b/scripts/fuzz.sh
@@ -1,4 +1,5 @@
 #! /usr/bin/env bash
 
-./fuzz-wasmer_sys.sh && \
-./fuzz-wasmer_wamr.sh
\ No newline at end of file
+./scripts/fuzz-wasmer_sys_dev.sh
+./scripts/fuzz-wasmer_sys_prod.sh
+./scripts/fuzz-wasmer_wamr.sh
\ No newline at end of file
diff --git a/scripts/test-wasmer_sys.sh b/scripts/test-wasmer_sys_dev.sh
similarity index 68%
rename from scripts/test-wasmer_sys.sh
rename to scripts/test-wasmer_sys_dev.sh
index e748cad9..fcaf35da 100755
--- a/scripts/test-wasmer_sys.sh
+++ b/scripts/test-wasmer_sys_dev.sh
@@ -5,19 +5,19 @@ export RUST_BACKTRACE=full
 export WASMER_BACKTRACE=1
 
 # static tests
-cargo fmt
+cargo fmt --check
 ( cd test && cargo fmt --check )
 ( cd crates/guest && cargo fmt --check )
 
-cargo clippy
-( cd test && cargo clippy )
-( cd crates/guest && cargo clippy --target wasm32-unknown-unknown )
+cargo clippy -- --deny warnings
+( cd test && cargo clippy -- --deny warnings )
+( cd crates/guest && cargo clippy --target wasm32-unknown-unknown -- --deny warnings )
 
 # tests the root workspace that doesn't include any wasm code
-cargo test --no-default-features --features error_as_host,wasmer_sys ${1-} -- --nocapture
+cargo test --no-default-features --features error_as_host,wasmer_sys_dev ${1-} -- --nocapture
 
 # test that everything builds
 cargo build --release --manifest-path test/test_wasm/Cargo.toml --target wasm32-unknown-unknown
 
-# build wasm and run the "full" tests for wasmer_sys
-cargo test --release --manifest-path test/Cargo.toml --no-default-features --features wasmer_sys ${1-} -- --nocapture 
+# build wasm and run the "full" tests for wasmer_sys_dev
+cargo test --release --manifest-path test/Cargo.toml --no-default-features --features wasmer_sys_dev ${1-} -- --nocapture
diff --git a/scripts/test-wasmer_sys_prod.sh b/scripts/test-wasmer_sys_prod.sh
new file mode 100755
index 00000000..b36be088
--- /dev/null
+++ b/scripts/test-wasmer_sys_prod.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euxo pipefail
+
+export RUST_BACKTRACE=full
+export WASMER_BACKTRACE=1
+
+# tests the root workspace that doesn't include any wasm code
+cargo test --no-default-features --features error_as_host,wasmer_sys_prod ${1-} -- --nocapture
+
+# test that everything builds
+cargo build --release --manifest-path test/test_wasm/Cargo.toml --target wasm32-unknown-unknown
+
+# build wasm and run the "full" tests for wasmer_sys_prod
+cargo test --release --manifest-path test/Cargo.toml --no-default-features --features wasmer_sys_prod ${1-} -- --nocapture
diff --git a/scripts/test.sh b/scripts/test.sh
index 30908fcb..f27eaeba 100644
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -1,4 +1,5 @@
 #! /usr/bin/env bash
 
-./test-wasmer_sys.sh && \
+./test-wasmer_sys_dev.sh
+./test-wasmer_sys_prod.sh
 ./test-wasmer_wamr.sh
\ No newline at end of file
diff --git a/test/Cargo.lock b/test/Cargo.lock
index cbb07f9e..61361628 100644
--- a/test/Cargo.lock
+++ b/test/Cargo.lock
@@ -98,7 +98,7 @@ dependencies = [
  "cfg-if",
  "libc",
  "miniz_oxide",
- "object",
+ "object 0.35.0",
  "rustc-demangle",
 ]
 
@@ -1224,6 +1224,31 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "inkwell"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbac11e485159a525867fb7e6aa61981453e6a72f625fde6a4ab3047b0c6dec9"
+dependencies = [
+ "either",
+ "inkwell_internals",
+ "libc",
+ "llvm-sys",
+ "once_cell",
+ "parking_lot",
+]
+
+[[package]]
+name = "inkwell_internals"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87d00c17e264ce02be5bc23d7bff959188ec7137beddd06b8b6b05a7c680ea85"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "is-terminal"
 version = "0.4.12"
@@ -1314,6 +1339,19 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4ce301924b7887e9d637144fdade93f9dfff9b60981d4ac161db09720d39aa5"
 
+[[package]]
+name = "llvm-sys"
+version = "150.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa55828745895d37233756307ded95a235b058aeb89cd12717ec7c3912089ee9"
+dependencies = [
+ "cc",
+ "lazy_static",
+ "libc",
+ "regex",
+ "semver",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -1418,6 +1456,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "object"
+version = "0.28.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e42c982f2d955fac81dd7e1d0e1426a7d702acd9c98d19ab01083a6a0328c424"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "object"
 version = "0.35.0"
@@ -1801,6 +1848,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.34"
@@ -2580,6 +2636,7 @@ dependencies = [
  "wasm-bindgen",
  "wasmer-compiler",
  "wasmer-compiler-cranelift",
+ "wasmer-compiler-llvm",
  "wasmer-derive",
  "wasmer-types",
  "wasmer-vm",
@@ -2635,6 +2692,30 @@ dependencies = [
  "wasmer-types",
 ]
 
+[[package]]
+name = "wasmer-compiler-llvm"
+version = "4.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86da768569a3b509285e486a93a3058b4837668c9c7fb54d7d208469fb06f028"
+dependencies = [
+ "byteorder",
+ "cc",
+ "inkwell",
+ "itertools 0.10.5",
+ "lazy_static",
+ "libc",
+ "object 0.28.4",
+ "rayon",
+ "regex",
+ "rustc_version",
+ "semver",
+ "smallvec",
+ "target-lexicon",
+ "wasmer-compiler",
+ "wasmer-types",
+ "wasmer-vm",
+]
+
 [[package]]
 name = "wasmer-config"
 version = "0.2.0"
diff --git a/test/Cargo.toml b/test/Cargo.toml
index 5d34c246..dd9d380d 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -42,12 +42,20 @@ debug = true
 
 [features]
 debug_memory = ["holochain_wasmer_host/debug_memory"]
-default = ["wasmer_sys"]
+default = ["wasmer_sys_dev"]
 wasmer_sys = [
   "dep:wasmer",
-  "dep:wasmer-middlewares", 
+  "dep:wasmer-middlewares",
+  "wasmer/sys",
+]
+wasmer_sys_dev = [
+  "wasmer_sys",
   "wasmer/default", 
-  "holochain_wasmer_host/wasmer_sys"
+  "holochain_wasmer_host/wasmer_sys_dev"
+]
+wasmer_sys_prod = [
+  "wasmer_sys",
+  "holochain_wasmer_host/wasmer_sys_prod"
 ]
 wasmer_wamr = [
   "dep:hc-wasmer",
diff --git a/test/src/wasms.rs b/test/src/wasms.rs
index 9d90a217..9f9146fc 100644
--- a/test/src/wasms.rs
+++ b/test/src/wasms.rs
@@ -10,8 +10,6 @@ use wasmer::wasmparser::Operator;
 use wasmer::AsStoreMut;
 #[cfg(feature = "wasmer_sys")]
 use wasmer::CompilerConfig;
-#[cfg(feature = "wasmer_sys")]
-use wasmer::Cranelift;
 use wasmer::Engine;
 use wasmer::FunctionEnv;
 use wasmer::Imports;
@@ -92,15 +90,24 @@ impl TestWasm {
                 let cranelift_fn = || {
                     let cost_function = |_operator: &Operator| -> u64 { 1 };
                     let metering = Arc::new(Metering::new(10_000_000_000, cost_function));
-                    let mut cranelift = Cranelift::default();
-                    cranelift.canonicalize_nans(true).push_middleware(metering);
-                    Engine::from(cranelift)
+                    #[cfg(feature = "wasmer_sys_dev")]
+                    let mut compiler = wasmer::Cranelift::default();
+                    #[cfg(feature = "wasmer_sys_prod")]
+                    let mut compiler = wasmer::LLVM::default();
+
+                    compiler.canonicalize_nans(true);
+                    compiler.push_middleware(metering);
+                    Engine::from(compiler)
                 };
 
-                let cranelift_fn_unmetered = || {
-                    let mut cranelift = Cranelift::default();
-                    cranelift.canonicalize_nans(true);
-                    Engine::from(cranelift)
+                let compiler_fn_unmetered = || {
+                    #[cfg(feature = "wasmer_sys_dev")]
+                    let mut compiler = wasmer::Cranelift::default();
+                    #[cfg(feature = "wasmer_sys_prod")]
+                    let mut compiler = wasmer::LLVM::default();
+
+                    compiler.canonicalize_nans(true);
+                    Engine::from(compiler)
                 };
 
                 // This will error if the cache is already initialized
@@ -111,7 +118,7 @@ impl TestWasm {
                         if metered {
                             cranelift_fn
                         } else {
-                            cranelift_fn_unmetered
+                            compiler_fn_unmetered
                         },
                         None,
                     ),
diff --git a/test/test_wasm/src/wasm.rs b/test/test_wasm/src/wasm.rs
index 4128dbfc..5ae52acc 100644
--- a/test/test_wasm/src/wasm.rs
+++ b/test/test_wasm/src/wasm.rs
@@ -67,7 +67,7 @@ pub extern "C" fn process_native(guest_ptr: usize, len: usize) -> DoubleUSize {
         Err(err_ptr) => return err_ptr,
     };
     let processed: SomeStruct = try_ptr!(
-        host_call(__hc__test_process_struct_2, &input),
+        host_call(__hc__test_process_struct_2, input),
         "could not deserialize SomeStruct in process_native"
     );
     return_ptr(processed)
diff --git a/test/wasm_empty/src/wasm.rs b/test/wasm_empty/src/wasm.rs
index b60bbdb9..22eba27a 100644
--- a/test/wasm_empty/src/wasm.rs
+++ b/test/wasm_empty/src/wasm.rs
@@ -1,2 +1,3 @@
+#![allow(unused_imports)]
 use holochain_wasmer_guest::allocation::__hc__allocate_1;
-use holochain_wasmer_guest::allocation::__hc__deallocate_1;
\ No newline at end of file
+use holochain_wasmer_guest::allocation::__hc__deallocate_1;