Emerge Yul recompiler (#1)

Provide a modified (and incomplete) version of ZKSync zksolc that can compile the most basic contracts

crates/llvm-context/src/optimizer/mod.rs

@@ -0,0 +1,51 @@
+//!
+//! The LLVM optimizing tools.
+//!
+
+pub mod settings;
+
+use serde::Deserialize;
+use serde::Serialize;
+
+use crate::target_machine::TargetMachine;
+
+use self::settings::Settings;
+
+///
+/// The LLVM optimizing tools.
+///
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Optimizer {
+    /// The optimizer settings.
+    settings: Settings,
+}
+
+impl Optimizer {
+    ///
+    /// A shortcut constructor.
+    ///
+    pub fn new(settings: Settings) -> Self {
+        Self { settings }
+    }
+
+    ///
+    /// Runs the new pass manager.
+    ///
+    pub fn run(
+        &self,
+        target_machine: &TargetMachine,
+        module: &inkwell::module::Module,
+    ) -> Result<(), inkwell::support::LLVMString> {
+        target_machine.run_optimization_passes(
+            module,
+            format!("default<O{}>", self.settings.middle_end_as_string()).as_str(),
+        )
+    }
+
+    ///
+    /// Returns the optimizer settings reference.
+    ///
+    pub fn settings(&self) -> &Settings {
+        &self.settings
+    }
+}