[core] codegen: Update raw_alloca to return PointerValue

Better match the expected behavior of alloca.

nac3core/src/codegen/types/list.rs

@@ -1,7 +1,7 @@
 use inkwell::{
     context::Context,
     types::{AnyTypeEnum, BasicType, BasicTypeEnum, IntType, PointerType},
-    values::IntValue,
+    values::{IntValue, PointerValue},
     AddressSpace,
 };
 
@@ -167,7 +167,7 @@ impl<'ctx> ProxyType<'ctx> for ListType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/mod.rs

@@ -16,7 +16,11 @@
 //!   the returned object. This is similar to a `new` expression in C++ but the object is allocated
 //!   on the stack.
 
-use inkwell::{context::Context, types::BasicType, values::IntValue};
+use inkwell::{
+    context::Context,
+    types::BasicType,
+    values::{IntValue, PointerValue},
+};
 
 use super::{
     values::{ArraySliceValue, ProxyValue},
@@ -53,13 +57,14 @@ pub trait ProxyType<'ctx>: Into<Self::Base> {
         llvm_ty: Self::Base,
     ) -> Result<(), String>;
 
-    /// Creates a new value of this type, returning the LLVM instance of this value.
+    /// Creates a new value of this type by invoking `alloca`, returning a [`PointerValue`] instance
+    /// representing the allocated value.
     fn raw_alloca<G: CodeGenerator + ?Sized>(
         &self,
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base;
+    ) -> PointerValue<'ctx>;
 
     /// Creates a new array value of this type, returning an [`ArraySliceValue`] encapsulating the
     /// resulting array.

nac3core/src/codegen/types/ndarray/contiguous.rs

@@ -218,7 +218,7 @@ impl<'ctx> ProxyType<'ctx> for ContiguousNDArrayType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/ndarray/indexing.rs

@@ -176,7 +176,7 @@ impl<'ctx> ProxyType<'ctx> for NDIndexType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/ndarray/mod.rs

@@ -430,7 +430,7 @@ impl<'ctx> ProxyType<'ctx> for NDArrayType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/ndarray/nditer.rs

@@ -203,7 +203,7 @@ impl<'ctx> ProxyType<'ctx> for NDIterType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/range.rs

@@ -1,7 +1,7 @@
 use inkwell::{
     context::Context,
     types::{AnyTypeEnum, BasicType, BasicTypeEnum, IntType, PointerType},
-    values::IntValue,
+    values::{IntValue, PointerValue},
     AddressSpace,
 };
 
@@ -131,7 +131,7 @@ impl<'ctx> ProxyType<'ctx> for RangeType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,

nac3core/src/codegen/types/utils/slice.rs

@@ -1,7 +1,7 @@
 use inkwell::{
     context::{AsContextRef, Context, ContextRef},
     types::{AnyTypeEnum, BasicType, BasicTypeEnum, IntType, PointerType},
-    values::IntValue,
+    values::{IntValue, PointerValue},
     AddressSpace,
 };
 use itertools::Itertools;
@@ -215,7 +215,7 @@ impl<'ctx> ProxyType<'ctx> for SliceType<'ctx> {
         generator: &mut G,
         ctx: &mut CodeGenContext<'ctx, '_>,
         name: Option<&'ctx str>,
-    ) -> <Self::Value as ProxyValue<'ctx>>::Base {
+    ) -> PointerValue<'ctx> {
         generator
             .gen_var_alloc(
                 ctx,