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

src/bin/test.rs

@@ -1,50 +0,0 @@
-/*
- * Released under the terms of the Apache 2.0 license with LLVM
- * exception. See `LICENSE` for details.
- */
-
-use arbitrary::{Arbitrary, Unstructured};
-use rand::{Rng, SeedableRng};
-use rand_chacha::ChaCha8Rng;
-use regalloc2::fuzzing::func::{machine_env, Func};
-use regalloc2::ion;
-use regalloc2::Function;
-
-fn create_random_func(seed: u64, size: usize) -> Func {
-    let mut bytes: Vec<u8> = vec![];
-    bytes.resize(size, 0);
-    let mut rng = ChaCha8Rng::seed_from_u64(seed);
-    rng.fill(&mut bytes[..]);
-    loop {
-        let mut u = Unstructured::new(&bytes[..]);
-        match Func::arbitrary(&mut u) {
-            Ok(f) => {
-                return f;
-            }
-            Err(arbitrary::Error::NotEnoughData) => {
-                let len = bytes.len();
-                bytes.resize(len + 1024, 0);
-                rng.fill(&mut bytes[len..]);
-            }
-            Err(e) => panic!("unexpected error: {:?}", e),
-        }
-    }
-}
-
-fn main() {
-    const SIZE: usize = 1000 * 1000;
-    env_logger::init();
-    let env = machine_env();
-    for iter in 0..3 {
-        let func = create_random_func(iter, SIZE);
-        eprintln!("==== {} instructions", func.insts());
-        let mut stats: ion::Stats = ion::Stats::default();
-        for i in 0..1000 {
-            let out = ion::run(&func, &env).expect("regalloc did not succeed");
-            if i == 0 {
-                stats = out.stats;
-            }
-        }
-        eprintln!("Stats: {:?}", stats);
-    }
-}

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.