add debug_print test dependency.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ola-lang"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 license = "Apache-2.0"
 authors = ["[email protected]"]

examples/source/types/u256.ola

@@ -1,10 +1,10 @@
 
 contract U256BasicTest {
 
-    // fn testU256DeclareUninitialized() {
-    //      u256 a; 
-    //      print(a);
-    // }
+    fn testU256DeclareUninitialized() {
+         u256 a; 
+         print(a);
+    }
 
     // // BEGIN-CHECK: define void @testU256DeclareInitialized()
     // fn testU256DeclareInitialized() { 

src/codegen/isa/ola/lower/extractv.rs

@@ -62,6 +62,8 @@ pub fn lower_extractvalue(
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/codegen/isa/ola/lower/gep.rs

@@ -164,6 +164,8 @@ pub fn lower_gep(
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/codegen/isa/ola/lower/insertv.rs

@@ -76,6 +76,8 @@ pub fn lower_insertvalue(
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/codegen/isa/ola/lower/zext.rs

@@ -338,6 +338,8 @@ pub fn lower_zext(
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/codegen/isa/ola/pass/eliminate_phi.rs

@@ -77,6 +77,8 @@ pub fn run_on_function(function: &mut Function<Ola>) {
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/codegen/mod.rs

@@ -10,6 +10,8 @@ pub mod register;
 
 #[cfg(test)]
 mod test {
+    use debug_print::debug_println;
+
     use crate::codegen::{
         core::ir::module::Module,
         isa::ola::{asm::AsmProgram, Ola},

src/sema/symtable.rs

@@ -2,7 +2,7 @@
 
 use indexmap::IndexMap;
 use ola_parser::diagnostics::{ErrorType, Level, Note};
-use std::collections::{HashMap, HashSet};
+use std::collections::HashMap;
 use std::str;
 use std::sync::Arc;
 
@@ -71,7 +71,7 @@ pub enum VariableUsage {
 }
 
 #[derive(Debug, Clone)]
-struct VarScope(HashMap<String, usize>, Option<HashSet<usize>>);
+struct VarScope(HashMap<String, usize>);
 
 #[derive(Default, Debug, Clone)]
 pub struct Symtable {
@@ -85,7 +85,7 @@ impl Symtable {
     pub fn new() -> Self {
         Symtable {
             vars: IndexMap::new(),
-            names: vec![VarScope(HashMap::new(), None)],
+            names: vec![VarScope(HashMap::new())],
             arguments: Vec::new(),
             returns: Vec::new(),
         }
@@ -177,7 +177,7 @@ impl Symtable {
     }
 
     pub fn new_scope(&mut self) {
-        self.names.push(VarScope(HashMap::new(), None));
+        self.names.push(VarScope(HashMap::new()));
     }
 
     pub fn leave_scope(&mut self) {