fe-lang
diff --git a/‎CLI.md‎
Lines changed: 3 additions & 2 deletions b/‎CLI.md‎
Lines changed: 3 additions & 2 deletions
diff --git a/‎crates/fe/src/main.rs‎
Lines changed: 1 addition & 1 deletion b/‎crates/fe/src/main.rs‎
Lines changed: 1 addition & 1 deletion
@@ -190,15 +190,16 @@ Optimization is controlled by `--opt-level <level>` (and the `--optimize` shorth
 
 Defaults:
 
-- `--opt-level` defaults to `1` (for both backends).
+- `--opt-level` defaults to `s` (for both backends).
 
 Backend behavior:
 
 - Yul backend: `--opt-level 0` disables the solc optimizer, and `--opt-level 1` / `2` enables it.
   - Note: `--opt-level 2` currently has no additional effect over `--opt-level 1` for solc; the CLI prints a warning.
 - Sonatina backend: `--opt-level <level>` controls Sonatina optimizations:
   - `0`: none
-  - `1`: balanced (default)
+  - `s`: size-optimized (default)
+  - `1`: balanced
   - `2`: aggressive
 
 `--optimize` is shorthand for `--opt-level 1`.
 
@@ -971,7 +971,7 @@ fn effective_opt_level(
     backend_kind: codegen::BackendKind,
     optimize: Option<&str>,
 ) -> Result<codegen::OptLevel, String> {
-    let level: codegen::OptLevel = optimize.unwrap_or("2").parse()?;
+    let level: codegen::OptLevel = optimize.unwrap_or("s").parse()?;
 
     if backend_kind == codegen::BackendKind::Yul
         && let Some(optimize @ ("1" | "2")) = optimize