diff --git a/nac3core/src/codegen/irrt/mod.rs b/nac3core/src/codegen/irrt/mod.rs
index e2add43..530ce0a 100644
--- a/nac3core/src/codegen/irrt/mod.rs
+++ b/nac3core/src/codegen/irrt/mod.rs
@@ -552,9 +552,9 @@ pub fn call_j0<'ctx>(
 ///
 /// * `num_dims` - An [IntValue] containing the number of dimensions.
 /// * `dims` - A [PointerValue] to an array containing the size of each dimensions.
-pub fn call_ndarray_calc_size<'ctx, 'a>(
-    generator: &mut dyn CodeGenerator,
-    ctx: &mut CodeGenContext<'ctx, 'a>,
+pub fn call_ndarray_calc_size<'ctx>(
+    generator: &dyn CodeGenerator,
+    ctx: &mut CodeGenContext<'ctx, '_>,
     num_dims: IntValue<'ctx>,
     dims: PointerValue<'ctx>,
 ) -> IntValue<'ctx> {
@@ -563,7 +563,7 @@ pub fn call_ndarray_calc_size<'ctx, 'a>(
 
     let llvm_pi64 = llvm_i64.ptr_type(AddressSpace::default());
 
-    let ndarray_calc_size_fn_name = match generator.get_size_type(ctx.ctx).get_bit_width() {
+    let ndarray_calc_size_fn_name = match llvm_usize.get_bit_width() {
         32 => "__nac3_ndarray_calc_size",
         64 => "__nac3_ndarray_calc_size64",
         bw => unreachable!("Unsupported size type bit width: {}", bw)
@@ -600,9 +600,9 @@ pub fn call_ndarray_calc_size<'ctx, 'a>(
 /// `NDArray`.
 /// * `shape` - LLVM pointer to the `shape` of the NDArray. This value must be the LLVM
 /// representation of a `list`.
-pub fn call_ndarray_init_dims<'ctx, 'a>(
-    generator: &mut dyn CodeGenerator,
-    ctx: &mut CodeGenContext<'ctx, 'a>,
+pub fn call_ndarray_init_dims<'ctx>(
+    generator: &dyn CodeGenerator,
+    ctx: &mut CodeGenContext<'ctx, '_>,
     ndarray: PointerValue<'ctx>,
     shape: PointerValue<'ctx>,
 ) {
@@ -616,7 +616,7 @@ pub fn call_ndarray_init_dims<'ctx, 'a>(
     let llvm_pi32 = llvm_i32.ptr_type(AddressSpace::default());
     let llvm_pusize = llvm_usize.ptr_type(AddressSpace::default());
 
-    let ndarray_init_dims_fn_name = match generator.get_size_type(ctx.ctx).get_bit_width() {
+    let ndarray_init_dims_fn_name = match llvm_usize.get_bit_width() {
         32 => "__nac3_ndarray_init_dims",
         64 => "__nac3_ndarray_init_dims64",
         bw => unreachable!("Unsupported size type bit width: {}", bw)
@@ -661,9 +661,14 @@ pub fn call_ndarray_init_dims<'ctx, 'a>(
     );
 }
 
-pub fn call_ndarray_calc_nd_indices<'ctx, 'a>(
-    generator: &mut dyn CodeGenerator,
-    ctx: &mut CodeGenContext<'ctx, 'a>,
+/// Generates a call to `__nac3_ndarray_calc_nd_indices`.
+///
+/// * `index` - The index to compute the multidimensional index for.
+/// * `ndarray` - LLVM pointer to the NDArray. This value must be the LLVM representation of an
+/// `NDArray`.
+pub fn call_ndarray_calc_nd_indices<'ctx>(
+    generator: &dyn CodeGenerator,
+    ctx: &mut CodeGenContext<'ctx, '_>,
     index: IntValue<'ctx>,
     ndarray: PointerValue<'ctx>,
 ) -> Result<PointerValue<'ctx>, String> {
@@ -675,12 +680,12 @@ pub fn call_ndarray_calc_nd_indices<'ctx, 'a>(
 
     let llvm_pusize = llvm_usize.ptr_type(AddressSpace::default());
 
-    let ndarray_calc_nd_indices_dn_name = match generator.get_size_type(ctx.ctx).get_bit_width() {
+    let ndarray_calc_nd_indices_fn_name = match llvm_usize.get_bit_width() {
         32 => "__nac3_ndarray_calc_nd_indices",
         64 => "__nac3_ndarray_calc_nd_indices64",
         bw => unreachable!("Unsupported size type bit width: {}", bw)
     };
-    let ndarray_calc_nd_indices_fn = ctx.module.get_function(ndarray_calc_nd_indices_dn_name).unwrap_or_else(|| {
+    let ndarray_calc_nd_indices_fn = ctx.module.get_function(ndarray_calc_nd_indices_fn_name).unwrap_or_else(|| {
         let fn_type = llvm_void.fn_type(
             &[
                 llvm_usize.into(),
@@ -691,7 +696,7 @@ pub fn call_ndarray_calc_nd_indices<'ctx, 'a>(
             false,
         );
 
-        ctx.module.add_function(ndarray_calc_nd_indices_dn_name, fn_type, None)
+        ctx.module.add_function(ndarray_calc_nd_indices_fn_name, fn_type, None)
     });
 
     let ndarray_num_dims = ctx.build_gep_and_load(