Merge pull request #36 from arnoox/pr-f2/local-cse

feat: add local common subexpression elimination pass

Author: arnoox

crates/herkos-core/src/ir/types.rs

@@ -447,7 +447,7 @@ impl fmt::Display for IrValue {
 }
 
 /// Binary operations.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum BinOp {
     // i32 operations
     I32Add,
@@ -543,7 +543,7 @@ pub enum BinOp {
 }
 
 /// Unary operations.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum UnOp {
     // i32 unary
     I32Clz,    // Count leading zeros