Factored out test program and fuzzing features; core crate now only depends on smallvec and log.

Cargo.toml

@@ -4,24 +4,20 @@ version = "0.0.1"
 authors = ["Chris Fallin <chris@cfallin.org>", "Mozilla SpiderMonkey Developers"]
 edition = "2018"
 license = "Apache-2.0 WITH LLVM-exception AND MPL-2.0"
-description = "Backtracking register allocator ported from IonMonkey"
-repository = "https://github.com/cfallin/regalloc2"
+description = "Backtracking register allocator inspired from IonMonkey"
+repository = "https://github.com/bytecodealliance/regalloc2"
 
 [dependencies]
 log = { version = "0.4.8", default-features = false }
 smallvec = "1.6.1"
-# keep this in sync with libfuzzer_sys's crate version:
-arbitrary = "^0.4.6"
-rand = "0.8"
-rand_chacha = "0.3"
-env_logger = "*"
 
-[dev-dependencies]
-criterion = "0.3"
+# The below are only needed for fuzzing.
+# Keep this in sync with libfuzzer_sys's crate version:
+arbitrary = { version = "^0.4.6", optional = true }
 
 [profile.release]
 debug = true
 
-[[bench]]
-name = "regalloc"
-harness = false
+[features]
+default = []
+fuzzing = ["arbitrary"]

fuzz/Cargo.toml

@@ -10,14 +10,12 @@ edition = "2018"
 cargo-fuzz = true
 
 [dependencies]
+regalloc2 = { path = "../", features = ["fuzzing"] }
 libfuzzer-sys = "0.3"
 arbitrary = { version = "^0.4.6", features = ["derive"] }
 log = { version = "0.4.8", default-features = false }
 env_logger = "0.8.3"
 
-[dependencies.regalloc2]
-path = ".."
-
 # Prevent this from interfering with workspaces
 [workspace]
 members = ["."]

src/lib.rs

@@ -25,6 +25,8 @@ pub mod index;
 pub use index::{Block, Inst, InstRange, InstRangeIter};
 
 pub mod checker;
+
+#[cfg(feature = "fuzzing")]
 pub mod fuzzing;
 
 /// Register classes.

test/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "regalloc2-test"
+version = "0.0.1"
+authors = ["Chris Fallin <chris@cfallin.org>", "Mozilla SpiderMonkey Developers"]
+edition = "2018"
+license = "Apache-2.0 WITH LLVM-exception AND MPL-2.0"
+description = "small test driver for benchmarking regalloc2"
+repository = "https://github.com/bytecodealliance/regalloc2"
+
+[dependencies]
+regalloc2 = { version = "*", path = "../", features = ["fuzzing"] }
+
+# Keep this in sync with libfuzzer_sys's crate version:
+arbitrary = { version = "^0.4.6" }
+rand = { version = "0.8" }
+rand_chacha = { version = "0.3" }
+env_logger = { version = "*" }
+
+[dev-dependencies]
+criterion = "0.3"
+
+[profile.release]
+debug = true
+
+[[bench]]
+name = "regalloc"
+harness = false
+