diff --git a/Cargo.lock b/Cargo.lock
index 6d2d8a287..78d343353 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -173,7 +173,6 @@ version = "0.10.2"
 source = "git+https://github.com/jakubDoka/regalloc2#52b2bbe908e78af1715de88f562f62a83e36ca96"
 dependencies = [
  "hashbrown",
- "log",
  "rustc-hash",
  "smallvec",
 ]
diff --git a/hbbytecode/src/lib.rs b/hbbytecode/src/lib.rs
index da1f4b538..b93a0cde9 100644
--- a/hbbytecode/src/lib.rs
+++ b/hbbytecode/src/lib.rs
@@ -35,7 +35,7 @@ impl TryFrom<u8> for Instr {
         }
 
         if value < NAMES.len() as u8 {
-            unsafe { Ok(std::mem::transmute::<u8, Instr>(value)) }
+            unsafe { Ok(core::mem::transmute::<u8, Instr>(value)) }
         } else {
             failed(value)
         }
@@ -50,8 +50,9 @@ unsafe fn encode<T>(instr: T) -> (usize, [u8; instrs::MAX_SIZE]) {
 }
 
 #[inline]
+#[cfg(feature = "disasm")]
 fn decode<T>(binary: &mut &[u8]) -> Option<T> {
-    let (front, rest) = std::mem::take(binary).split_at_checked(core::mem::size_of::<T>())?;
+    let (front, rest) = core::mem::take(binary).split_at_checked(core::mem::size_of::<T>())?;
     *binary = rest;
     unsafe { Some(core::ptr::read(front.as_ptr() as *const T)) }
 }
diff --git a/hblang/Cargo.toml b/hblang/Cargo.toml
index d059410c2..2570c22d0 100644
--- a/hblang/Cargo.toml
+++ b/hblang/Cargo.toml
@@ -10,7 +10,7 @@ path = "src/main.rs"
 [dependencies]
 hbbytecode = { version = "0.1.0", path = "../hbbytecode" }
 hbvm = { path = "../hbvm", features = ["nightly"] }
-regalloc2 = { git = "https://github.com/jakubDoka/regalloc2", features = ["trace-log"] }
+regalloc2 = { git = "https://github.com/jakubDoka/regalloc2", features = [] }
 
 [dev-dependencies]
 env_logger = "0.11.5"
diff --git a/hblang/README.md b/hblang/README.md
index 1da553142..9e50fa771 100644
--- a/hblang/README.md
+++ b/hblang/README.md
@@ -504,6 +504,14 @@ main := fn(): int {
 			if y == width break
 		}
 	}
+
+	width += 1
+
+	loop {
+		if width < y break
+		y += 1
+	}
+
 	return i
 }
 ```
diff --git a/hblang/src/son.rs b/hblang/src/son.rs
index ce7cc868a..33cca843c 100644
--- a/hblang/src/son.rs
+++ b/hblang/src/son.rs
@@ -1818,7 +1818,25 @@ impl Codegen {
             std::mem::swap(&mut env.preferred_regs_by_class, &mut env.non_preferred_regs_by_class);
         };
         let options = regalloc2::RegallocOptions { verbose_log: false, validate_ssa: true };
-        let output = regalloc2::run(&func, &env, &options).unwrap_or_else(|err| panic!("{err}"));
+        let iters = std::time::SystemTime::now()
+            .duration_since(std::time::SystemTime::UNIX_EPOCH)
+            .unwrap()
+            .as_nanos() as u32
+            % 300
+            + 300;
+        let mut output =
+            regalloc2::run(&func, &env, &options).unwrap_or_else(|err| panic!("{err}"));
+        let now = std::time::Instant::now();
+        for i in 0..iters {
+            output = regalloc2::run(&func, &env, &options).unwrap_or_else(|err| panic!("{err}"));
+            if (iters + i) % 2 == 0 {
+                std::mem::swap(
+                    &mut env.preferred_regs_by_class,
+                    &mut env.non_preferred_regs_by_class,
+                );
+            }
+        }
+        eprintln!("took: {:?}", now.elapsed().checked_div(iters).unwrap());
 
         let mut saved_regs = HashMap::<u8, u8>::default();
         let mut atr = |allc: regalloc2::Allocation| {